# Amphenol Corp: Form 10-K for the period ended Dec 31, 2025

- Company: [Amphenol Corp](/companies/aph.md) (CIK 820313)
- Form: 10-K
- Filed: 2026-02-11
- Accepted by EDGAR: Feb 11, 2026, 17:28 ET
- Period: 2025-12-31
- Accession: 0001104659-26-013549
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/820313/000110465926013549/aph-20251231x10k.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/820313/000110465926013549/

## Figures reported in this filing

Standardized XBRL line items for the period ended 2025-12-31.

| Line item | Period | Value | XBRL concept |
| --- | --- | ---: | --- |
| Revenue | 12 months, 2025-01-01 to 2025-12-31 | $23.09bn | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
| Cost of revenue | 12 months, 2025-01-01 to 2025-12-31 | $14.58bn | us-gaap:CostOfRevenue |
| Gross profit | 12 months, 2025-01-01 to 2025-12-31 | $8.52bn | us-gaap:GrossProfit |
| Research and development | 12 months, 2025-01-01 to 2025-12-31 | $647.0m | us-gaap:ResearchAndDevelopmentExpense |
| Selling, general and administrative | 12 months, 2025-01-01 to 2025-12-31 | $2.55bn | us-gaap:SellingGeneralAndAdministrativeExpense |
| Operating income | 12 months, 2025-01-01 to 2025-12-31 | $5.87bn | us-gaap:OperatingIncomeLoss |
| Interest expense | 12 months, 2025-01-01 to 2025-12-31 | $367.8m | us-gaap:InterestExpenseNonoperating |
| Income tax | 12 months, 2025-01-01 to 2025-12-31 | $1.30bn | us-gaap:IncomeTaxExpenseBenefit |
| Net income | 12 months, 2025-01-01 to 2025-12-31 | $4.27bn | us-gaap:NetIncomeLoss |
| Diluted EPS | 12 months, 2025-01-01 to 2025-12-31 | $3.34 | us-gaap:EarningsPerShareDiluted |
| Basic EPS | 12 months, 2025-01-01 to 2025-12-31 | $3.51 | us-gaap:EarningsPerShareBasic |
| Diluted shares (weighted) | 12 months, 2025-01-01 to 2025-12-31 | 1,277,500,000 shares | us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding |
| Operating cash flow | 12 months, 2025-01-01 to 2025-12-31 | $5.37bn | us-gaap:NetCashProvidedByUsedInOperatingActivities |
| Capital expenditure | 12 months, 2025-01-01 to 2025-12-31 | $996.6m | us-gaap:PaymentsToAcquirePropertyPlantAndEquipment |
| Dividends paid | 12 months, 2025-01-01 to 2025-12-31 | $802.2m | us-gaap:PaymentsOfDividendsCommonStock |
| Share repurchases | 12 months, 2025-01-01 to 2025-12-31 | $665.2m | us-gaap:PaymentsForRepurchaseOfCommonStock |
| Cash and equivalents | at 2025-12-31 | $11.13bn | us-gaap:CashAndCashEquivalentsAtCarryingValue |
| Current assets | at 2025-12-31 | $20.27bn | us-gaap:AssetsCurrent |
| Total assets | at 2025-12-31 | $36.24bn | us-gaap:Assets |
| Current liabilities | at 2025-12-31 | $6.80bn | us-gaap:LiabilitiesCurrent |
| Total liabilities | at 2025-12-31 | $22.73bn | us-gaap:Liabilities |
| Shareholders' equity | at 2025-12-31 | $13.41bn | us-gaap:StockholdersEquity |

## Business

As filed, 45,508 characters.

### General

Amphenol Corporation is one of the world’s largest designers, manufacturers and marketers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products and coaxial, high-speed, fiber optic and specialty cable. The Company estimates, based on recent reports of industry analysts, that worldwide sales of interconnect, value-add cable assembly, antenna, cable and sensor-related products were approximately $500 billion in 2025.

Certain predecessor businesses of the Company were founded in 1932, and the Company was incorporated under the laws of the State of Delaware in 1986. The Company’s Class A Common Stock (“Common Stock”) began trading on the New York Stock Exchange in 1991.

### Reportable Business Segments

The Company’s strategy is to provide our customers with comprehensive design capabilities, a broad selection of products and a high level of quality and service on a worldwide basis, while maintaining continuing programs of productivity improvement and cost control. The Company aligns its businesses into three reportable business segments: *(i) Communications Solutions, (ii) Harsh Environment Solutions* and *(iii) Interconnect and Sensor Systems.* This alignment and segment structure reinforces the Company’s entrepreneurial culture and enables clear accountability of each of our business unit general managers, while enhancing the scalability of Amphenol’s business for the future. The Company has three segment managers who lead their respective reportable business segments, each reporting directly to the Company’s Chief Executive Officer. All segment information throughout this Annual Report is presented under our three reportable segments.

A description of each of our reportable business segments is as follows:

- *Communications Solutions –* the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other interconnect products; coaxial, fiber optic, power and high-speed cable; antennas; and other products.
- *Harsh Environment Solutions –* the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products.
- *Interconnect and Sensor Systems –* the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems.

The following table provides a summary of the end markets that we service and our key products within each of the three reportable business segments:

| Reporting Segment ​ ​ ​ ​ ​ | Communications Solutions ​ ​ ​ ​ ​ | Harsh Environment Solutions ​ ​ ​ ​ ​ | Interconnect and Sensor Systems ​ |
| --- | --- | --- | --- |
| **% of 2025 Net Sales:** | 52% | 26% | 22% |
| **​** **​** | **​** **​** | **​** **​** | **​** |
| **End Markets** ​ | ● ​ ​Automotive ● ​ ​Commercial Aerospace ● ​ ​Communications Networks ● ​ ​Defense ● ​ ​Industrial ● ​ ​Information Technology and Data Communications ● ​ ​Mobile Devices ​ | ● ​ ​Automotive ● ​ ​Commercial Aerospace ● ​ ​Communications Networks ● ​ ​Defense ● ​ ​Industrial ● ​ ​Information Technology and Data Communications ​ ​ | ● ​ ​Automotive ● ​ ​Commercial Aerospace ● ​ ​Communications Networks ● ​ ​Defense ● ​ ​Industrial ● ​ ​Information Technology and Data Communications ​ |
| **​** ​ | ​ ​ | ​ ​ | ​ |
| **Key Products** ​ | Connectors and Connector Systems: ● ​ ​fiber optic interconnect products ● ​ ​high-speed interconnect products ● ​ ​radio frequency interconnect products ​ Value-Add Products: ● ​ ​cable assemblies and harnesses ​ Antennas: ● ​ ​consumer device antennas ● ​ ​network infrastructure antennas ​ Cable: ● ​ ​coaxial, fiber optic, power and specialty cable ​ Other: ● ​ ​hinges and other mechanical products ● ​ ​production-related products ​ | Connectors and Connector Systems: ● ​ harsh environment data, power, fiber optic and radio frequency interconnect products ​ Value-Add Products: ● ​ ​backplane interconnect systems ● ​ ​cable assemblies and harnesses ● cable management products ​ Cable: ● ​ ​coaxial and specialty cable ​ Other: ● ​ ​flexible and rigid printed circuit boards ​ | Connectors and Connector Systems: ● ​ ​busbars and power distribution systems ● ​ ​power interconnect products ​ Value-Add Products: ● ​ ​backplane interconnect systems ● ​ ​cable assemblies and harnesses ​ Sensors and Sensor-based Products: ● ​ ​force ● ​ ​gas and moisture ● ​ ​level ● ​ ​position ● ​ ​pressure ● ​ ​temperature ● ​ ​vibration |

For further details related to the Company’s reportable business segments, information regarding the Company’s operations and results by reportable segment, as well as the Company’s net sales and long-lived assets by geographic area, refer to Note 13 of the Notes to Consolidated Financial Statements.

### Our Strategy

The Company’s overall strategy is to provide our customers with comprehensive design capabilities, a broad selection of products and a high level of quality and service on a worldwide basis, while maintaining continuing programs of productivity improvement and cost control. Specifically, our business strategy is as follows:

- *Pursue broad market diversification* - The Company constantly strives to increase the diversity of its markets, customers, applications and products. Due to the tremendous variety of opportunities in the electronics industry, management believes that it is important to participate wherever significant growth opportunities are available. This diversification positions us to proliferate our technologies across the broadest array of opportunities and reduces our exposure to any one particular market, thereby reducing the variability of our financial performance. An overview of the Company’s market and product participation is described under “Markets”.
- *Develop high-technology performance-enhancing solutions* - The Company seeks to expand the scope and number of its preferred supplier relationships with customers across its diverse end markets. The Company works closely with its customers at the design stage to create and manufacture innovative solutions. These products generally have higher value-added content than other interconnect, antenna and sensor products, and have been developed across the Company’s end markets. The Company is focused on technology leadership in the interconnect areas of radio frequency, power, harsh environment, high-speed and fiber optics, as well as antennas and sensors, as it views these technology areas to be of particular importance to our global customer base.
- *Expand global presence* - The Company is strategically expanding and shifting its global manufacturing, engineering, sales and service operations to better serve its existing customer base, penetrate developing markets and establish new customer relationships. As the Company’s global customers have grown their international operations to access developing world markets and lower manufacturing costs, the Company is continuing to expand and shift its international footprint in order to provide real-time capabilities to these customers. The majority of the Company’s international operations have broad capabilities, including new product development. The Company is also able to take advantage of the lower manufacturing costs in some regions, and has established low-cost manufacturing and assembly facilities around the world.
- *Control costs* - The Company recognizes the importance in today’s global marketplace of maintaining a competitive cost structure. Innovation, product quality and performance, and comprehensive customer service are not mutually exclusive with controlling costs. Controlling costs is part of a mindset. It is having the discipline to invest in programs that have a good return, maintaining a cost structure as flexible as possible to respond to changes in the marketplace, working with suppliers and vendors in a fair but prudent way to ensure a reasonable cost for materials and services and creating a mindset where managers manage the Company’s assets as if they were their own.
- *Pursue strategic acquisitions and investments* - The Company believes that the industry in which it operates is highly fragmented and continues to provide significant opportunities for strategic acquisitions. As a result, we continue to pursue acquisitions of high-potential companies with strong management teams that complement our existing business while further expanding our product lines, technological capabilities and geographic presence. We seek to enhance the performance of acquired companies by leveraging Amphenol’s position with customers across our diverse end markets, our leading technologies and our access to low-cost manufacturing around the world. In 2025, the Company invested approximately $3.8 billion to fund five acquisitions, while in 2024, the Company invested approximately $2.2 billion to fund two acquisitions. Our acquisitions in 2025 and 2024 have strengthened our customer base and product offerings in many of our end markets and have brought new, high-performing management teams into the Company. On January 31, 2025, the Company completed the acquisition of the Outdoor Wireless Networks segment (“OWN”) and Distributed Antenna Systems (“DAS”) business (collectively, “Andrew”) from Vistance Networks, Inc. (“Vistance,” formerly known as CommScope Holding Company, Inc.). The acquisition of Andrew provides a wide range of products, technologies and capabilities such as communications networks solutions, with advanced technologies in the area of base station antennas and related interconnect solutions, as well as distributed antenna systems, that are highly complementary to Amphenol’s existing product portfolio for next-generation wireless networks. Additionally, on January 9, 2026, the Company completed the acquisition of Vistance’s Connectivity and Cable Solutions business (which we now refer to collectively as “CommScope”) for an aggregate purchase price of approximately $10.5 billion, which to date is the largest acquisition in the Company’s history. The acquisition of CommScope adds significant fiber optic interconnect capabilities for the IT datacom and communications networks markets as well as a diverse range of industrial interconnect products for the building infrastructure connectivity market.
- *Foster collaborative, entrepreneurial management* - Amphenol’s management system is designed to provide clear income statement and balance sheet responsibility in a flat organizational structure. Each general manager is enabled and incented to grow and develop their business and to think entrepreneurially in providing innovative, timely and cost-effective solutions to meet customer needs. In addition, Amphenol’s general managers have access to the resources of the larger organization and are encouraged to work collaboratively with their peers throughout the Company to meet the needs of the expanding marketplace and to achieve common goals. As the Company has grown, we have preserved this unique culture of entrepreneurship by ensuring that our executive organization can effectively drive the performance of and collaboration among our global general managers. The alignment of the Company’s businesses into three divisions (representing the Company’s reportable business segments), each led by a segment manager reporting directly to the Chief Executive Officer, reinforces this culture and enables clear accountability, while enhancing the scalability of the Company’s entrepreneurial organization.

### Markets

The Company sells products to customers in a diversified set of end markets. For a discussion of certain risks related to the Company’s end markets, refer to the subsection titled “Risks Related to our End Markets” included in Part I, Item 1A. *Risk Factors* herein.

*Automotive* - Amphenol is a leading supplier of advanced interconnect systems, sensors and antennas for a growing array of automotive applications. In addition, Amphenol has developed advanced technology solutions for hybrid and electric vehicles and is working with leading global customers to proliferate these advanced interconnect products into next-generation automobiles. Sales into the automotive market represented approximately 15% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |  |
| --- | --- | --- |
| ​ | ​ | ​ |
| ● ​ ​antennas | ​ ​ ​ | ● ​ ​lighting |
| ● ​ ​charging stations | ​ | ● ​ ​passenger connectivity |
| ● ​ ​climate control | ​ | ● ​ ​power management |
| ● ​ ​electric vehicles | ​ | ● ​ ​safety and security systems |
| ● ​ ​engine management and control | ​ | ● ​ ​sensing systems |
| ● ​ ​exhaust monitoring and cleaning | ​ | ● ​ ​telematics systems |
| ● ​ ​hybrid vehicles | ​ | ● ​ ​transmission systems |
| ● ​ ​infotainment and communications | ​ | ​ |

*Commercial Aerospace* - Amphenol is a leading provider of high-performance interconnect systems and components to the commercial aerospace market. In addition to connector and interconnect assembly products, the Company also provides rigid and flexible printed circuits, specialty cable, high-technology cable management products as well as sensors. Our products are specifically designed to operate in the harsh environments of commercial aerospace, while also providing substantial weight reduction, simplified installation and/or minimal maintenance. Sales into the commercial aerospace market represented approximately 5% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |  |
| --- | --- | --- |
| ​ | ​ | ​ |
| ● ​ ​aircraft and airframe power distribution | ​ ​ ​ | ● ​ ​in-flight entertainment |
| ● ​ ​avionics | ​ | ● ​ ​in-flight internet connectivity |
| ● ​ ​controls and instrumentation | ​ | ● ​ ​lighting and control systems |
| ● ​ ​engines | ​ | ● ​ ​wire bundling and cable management |

*Communications Networks* - Amphenol is a leading global provider to the communications networks market and offers a wide product portfolio to support wireline and wireless service providers. The Company’s products include antennas, cables, connectors and interconnect systems that are used in current and next-generation wireline and wireless communications standards, including 5G networks. Sales into the communications networks market represented approximately 10% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |  |
| --- | --- | --- |
| ​ ​ ​ | ​ | ​ |
| ● ​ ​antenna systems | ​ ​ ​ | ● ​ ​fiber management systems |
| ● ​ ​base stations | ​ ​ ​ | ● ​ ​mobile switches |
| ● ​ ​cable, satellite & telecommunications networks | ​ | ● ​ ​network switching equipment |
| ● ​ ​customer premises equipment | ​ | ● ​ ​satellite interface devices |
| ● ​ ​distributed antenna systems (DAS) | ​ ​ ​ | ● ​ ​small cells |
| ​ | ​ | ​ |

*Defense* - Amphenol is a world leader in the design, manufacture and supply of high-performance interconnect systems for harsh environment aerospace and defense applications. Such products require superior performance and reliability under conditions of stress and in hostile environments such as vibration, pressure, humidity, radiation and rapid and severe temperature changes. Amphenol provides an unparalleled product breadth, from aerospace and defense specification connectors to customized high-speed board level interconnects; from flexible to rigid printed circuit boards; from backplane systems to completely integrated assemblies; and from sensors to sensor-based systems. Amphenol is a technology leader, participating in major programs from the earliest inception across each phase of the production cycle. Sales into the defense market represented approximately 9% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |  |
| --- | --- | --- |
| ● ​ ​airframe | ​ | ● ​ ​naval |
| ● ​ ​avionics | ​ | ● ​ ​ordnance and missile systems |
| ● ​ ​communications | ​ | ● ​ ​radar systems |
| ● ​ ​engines | ​ | ● ​ ​rotorcraft |
| ● ​ ​ground vehicles and tanks | ​ | ● ​ ​satellite and space programs |
| ● ​ ​homeland security | ​ | ● ​ ​unmanned aerial vehicles |

*Industrial* - Amphenol is a technology leader in the design, manufacture and supply of high-performance interconnect systems, sensors and antennas for a broad range of industrial applications. Amphenol’s core competencies include application-specific industrial interconnect solutions utilizing integrated assemblies, including with both cable and flexible printed circuits, as well as high-power interconnects requiring advanced engineering and system integration. In particular, our innovative solutions facilitate the increasing demands of embedded computing, power distribution and electrification within industrial applications. Sales into the industrial market represented approximately 19% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |
| --- | --- |
| ​ | ​ |
| ● ​ ​agricultural equipment | ​ ​ ​ ● ​ ​marine |
| ● ​ ​alternative and traditional energy generation | ​ ● ​ ​medical equipment |
| ● ​ ​batteries and hybrid drive systems | ​ ● ​ ​oil and gas |
| ● ​ ​entertainment | ​ ● ​ ​power distribution |
| ● ​ ​factory and machine tool automation | ​ ● ​ ​public safety |
| ● ​ ​heavy equipment | ​ ● ​ ​rail mass transit |
| ● ​ ​instrumentation | ​ ● ​ ​semiconductor manufacturing equipment |
| ● ​ ​internet of things | ​ ● ​ ​smart manufacturing |
| ● ​ ​LED lighting | ​ ● ​ ​transportation |

6

*Information Technology and Data Communications* - Amphenol is a global provider of interconnect solutions to designers, manufacturers and operators of internet and artificial intelligence (“AI”)-enabling systems. With our industry-leading high-speed, power and active and passive fiber optic interconnect technologies, together with superior simulation and testing capability and cost effectiveness, Amphenol is a market leader in interconnect development for the information technology and data communications (“IT datacom”) market. Our products enable a broad array of IT datacom systems and applications, including a growing range of systems to power AI and machine learning. Whether industry standard or application-specific designs are required, Amphenol provides customers with products that enable performance at the leading edge of next-generation, high-speed, power and fiber optic technologies. Sales into the IT datacom market represented approximately 36% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |
| --- | --- |
| ​ | ​ ​ |
| ​ | ​ |
| ● ​ ​AI | ​ ● ​ ​servers |
| ● ​ ​cloud computing | ​ ● ​ ​storage systems |
| ● ​ ​data centers | ​ ● ​ ​transmission |
| ● ​ ​networking equipment | ​ ​ |

*Mobile Devices* - Amphenol designs and manufactures an extensive range of interconnect products, antennas and electromechanical components, including hinges, found in a wide array of mobile computing devices. Amphenol’s capability for high-volume production of these technically demanding, miniaturized products, combined with our speed of new product introduction, are critical drivers of the Company’s long-term success in this market. Sales into the mobile devices market represented approximately 6% of the Company’s net sales in 2025, with sales into the following primary end applications:

|  |  |
| --- | --- |
| ​ | ​ ​ |
| ​ | ​ |
| ● ​ ​consumer electronics | ​ ​ ​ ● ​ ​production-related products |
| ● ​ ​mobile and smart phones, including accessories | ​ ● ​ ​wearable and hearable devices |
| ● ​ ​mobile computing devices, including laptops, tablets and e-readers | ​ ​ |

### Customers and Geographies

The Company manufactures and sells a broad portfolio of products on a global basis to customers in a wide variety of industries. Our customers include many of the leaders in their respective industries, and our relationships with them typically date back many years. We believe that our diversified customer base provides us with the opportunity to leverage our skills and experience across markets and reduces our exposure to particular end markets. Additionally, we believe that the diversity of our customer base is an important asset of the Company.

For many years, customers have generally been consolidating their lists of qualified suppliers to companies that have the ability to meet certain technical, quality, delivery and other standards while maintaining geographic flexibility and competitive prices. The Company has positioned its global resources to compete effectively in this environment. As an industry leader, the Company has established close working relationships with many of its customers on a global basis. These relationships allow the Company to better anticipate and respond to these customer needs when designing new products and new technical solutions. By working with customers to develop new products and technologies, the Company is able to identify and act on trends and leverage knowledge about next-generation technology across our portfolio of products. In addition, the Company has concentrated its efforts on service, procurement and manufacturing improvements designed to increase product quality and performance and lower product lead-time and cost. For a discussion of certain risks related to the Company’s sales, refer to the subsection titled “Risks Related to our End Markets” included in Part I, Item 1A. *Risk Factors* herein.

The Company’s products are sold to thousands of original equipment manufacturers (or OEMs) in numerous countries throughout the world. The Company’s products are also sold to electronic manufacturing services (EMS) companies, to original design manufacturers (or ODMs) and to service providers, including telecommunications network service providers and web service providers. No single customer accounted for 10% or more of the Company’s net sales during the years ended December 31, 2025, 2024 and 2023.

The Company sells its products through its own global sales force, independent representatives and a global network of electronics distributors. The Company’s sales to distributors represented approximately 19% and 18% of the Company’s net sales in 2025 and 2024, respectively. In addition to product design teams and collaborative initiatives with customers, the Company uses key account managers to manage certain customer relationships on a global basis so that it can bring to bear its total resources to meet the worldwide needs of its multinational customers.

### Manufacturing

The Company is a global manufacturer employing advanced manufacturing processes including molding, stamping, plating, turning, computer numerical control (CNC) machining, 3D printing, extruding, die casting, certain other manufacturing, automation and assembly operations and proprietary process technology for connectors, specialty, fiber optic and coaxial cable production, antenna and sensor fabrication. Outsourcing of certain manufacturing processes is used when cost-effective. Substantially all of the Company’s manufacturing facilities operate under certification to management system standards of globally recognized, industry certification organizations. Many of our facilities are certified to quality management systems, primarily ISO9001, but also may include ISO13485, AS9100, and IATF16949. In addition, approximately half of our facilities are also certified to environmental, energy management or occupational health and safety management systems, including ISO14001, ISO45001 and ISO50001.

The Company’s manufacturing facilities are generally vertically integrated operations from the initial design stage through final design and manufacturing. The Company designs, manufactures and assembles its products at facilities in approximately 40 countries around the world. Our global coverage positions us near many of our customers’ locations and allows us to assist them in consolidating their supply base and lowering their production and logistics costs. In addition, the Company generally relies on local management in every region, which we believe creates a high degree of organizational stability and operational agility, as well as a deeper understanding of local markets. We believe our broad and balanced geographic distribution lowers our exposure to particular geographies, while allowing us to support our customers when challenges arise in a particular geography. The Company believes that its global presence is an important competitive advantage, as it allows the Company to provide quality products on a timely and worldwide basis to its multinational customers, while at the same time offering a level of resiliency and diversification against local risks and challenges that may emerge in any single geography.

The Company employs a global manufacturing strategy to provide proximity and reliable service to customers, while also lowering production and logistics costs. Our strategy is to maintain strong cost and quality controls in our manufacturing and assembly operations. The Company evaluates and adjusts its expense levels and workforce to reflect current business conditions and attempts to maximize operating profitability as well as the return on capital investments. This strategy has been, and continues to be, critical to the Company’s ability to mitigate any potential supply chain constraints. The Company sources materials and components for its products on a worldwide basis. To better serve certain high-volume customers, the Company has established facilities near these major customers. The Company seeks to position its manufacturing and assembly facilities in order to serve local markets while coordinating, as appropriate, product design and manufacturing responsibility with the Company’s other operations around the world. For a discussion of certain risks related to the Company’s global operations, refer to the subsection titled “Risks Related to our Global Operations” included in Part I, Item 1A. *Risk Factors* herein.

### Research and Development

The Company’s product development strategy is to rely on product design teams at most of our business units around the world working collaboratively with customers, which often results in the Company obtaining approved vendor status for its customers’ new products and programs. The Company focuses its research and development efforts primarily on those product areas that it believes have the potential for broad market applications and significant sales within a one- to three-year period. The Company seeks to have its products become widely accepted within the industry for similar applications and products manufactured by other potential customers, which the Company believes will provide additional sources of future revenue. At the end of 2025, our research, development and engineering efforts, which relate to the creation of new and improved products and processes, were supported by approximately 6,400 of our employees and were performed primarily by individual business units focused on specific markets and product technologies.

### Intellectual Property

We own a significant portfolio of patents that principally relate to mechanical, electrical, radio frequency, optical and electronic features of interconnect, antenna and sensor products. We also own a portfolio of trademarks and are a licensee of various patents and trademarks. Patents for individual products extend for varying periods according to the date of patent filing or grant and the legal term of patents in the various countries where patent protection is obtained. Trademark rights may potentially extend for longer periods of time and are dependent upon the laws of various jurisdictions and the use of the trademarks.

We also rely upon trade secrets, manufacturing know-how, continuing technological innovations and licensing opportunities to maintain and improve our competitive position. We review third-party proprietary rights, including patents and patent applications, as available, in an effort to develop an effective intellectual property strategy, avoid infringement of third-party proprietary rights, identify licensing opportunities and monitor the intellectual property claims of others.

From time to time, the Company is involved in disputes with third parties regarding the Company’s or such third party’s intellectual property assets, particularly patents. While we consider our patents and trademarks to be valuable assets, we do not believe that our competitive position or our operations are dependent upon or would be materially impacted by the loss of any single patent or group of related patents, or by a third party’s successful enforcement of its patents against us or any of our products. For a discussion of certain risks related to the Company’s intellectual property, refer to the risk factor titled “*We may experience difficulties in enforcing our intellectual property rights, which could result in loss of market share, and we may be subject to claims of infringement of the intellectual property rights of others”* in Part I, Item 1A. *Risk Factors* herein.

### Raw Materials

The Company purchases a wide variety of raw materials for the manufacture of its products, including (i) precious metals such as gold, silver and palladium, (ii) aluminum, steel, copper, titanium and metal alloy products (iii) copper wire and optical fiber, and (iv) plastic materials. The Company also purchases a wide variety of mechanical and electronic components for the manufacturing of its products. Such raw materials and components are generally available throughout the world and are purchased locally from a variety of suppliers. The Company is generally not dependent upon any one source for raw materials or components or, if one source is used, the Company generally attempts to protect itself through long-term supply agreements. From time to time, the Company has encountered, and in the future may encounter, difficulties in obtaining certain raw materials or components necessary for production at reasonable costs due to supply chain constraints and logistical challenges, which may include regulatory restrictions and the imposition of additional tariffs. These difficulties may also negatively impact the pricing of materials and components sourced or used by the Company. While the Company does not currently anticipate significant, broad-based difficulties in obtaining raw materials or components necessary for production, inflationary pressures and increased commodity prices may impact the cost and availability of certain raw materials and components used by the Company and result in supply shortages for discrete raw materials or components. For a discussion of certain risks related to the availability of and dependence on raw materials and components, refer to the risk factor titled “*The Company and certain of its suppliers and customers have experienced, and may in the future experience, difficulties obtaining certain raw materials and components, and the cost of certain of the Company’s raw materials and components may increase”* in Part I, Item 1A. *Risk Factors* herein. Information regarding our obligations related to commitments to purchase certain goods and services is disclosed in Note 14 of the Notes to Consolidated Financial Statements.

### Competition

The Company encounters competition in all areas of its business. The Company competes primarily on the basis of technology innovation, product quality and performance, price, customer service and delivery time. Primary competitors include Aptiv, Belden, Corning, Foxconn Interconnect Technology, Glenair, HUBER+SUHNER, ICT Luxshare, Jonhon, Molex, Rosenberger, Sensata, TE Connectivity and Yazaki, among others. In addition, the Company competes with a large number of smaller companies who compete in specific geographies, markets or products. For a discussion of certain risks related to competition, refer to the risk factor titled “*The Company encounters competition in all areas of our business”* in Part I, Item 1A. *Risk Factors* herein.

### Backlog and Seasonality

The Company estimates that its backlog of unfilled firm orders as of December 31, 2025 was approximately $8.9 billion compared with backlog of approximately $6.1 billion as of December 31, 2024. The increase in the Company’s backlog was primarily related to strong demand for the Company’s products that support AI applications, as well as contributions from the Company’s acquisition program. Orders typically fluctuate from quarter to quarter based on customer demand and general business conditions. Unfilled orders may generally be cancelled prior to shipment of goods. It is expected that nearly all of the Company’s backlog will be filled within the next 12 months. A significant portion of the Company’s business, such as sales to the communications-related markets and sales to distributors, generally have short lead times. Therefore, backlog may not be indicative of future demand. Generally, the Company does not experience significant seasonality in its business, although historically, the strongest quarters have typically been the last two quarters of our fiscal year.

### Environmental Matters

Certain operations of the Company are subject to environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows. For more information on certain environmental matters, refer to Note 14 of the Notes to Consolidated Financial Statements. For a discussion of certain risks related to environmental matters, refer to the risk factor titled “*The Company is subject to environmental laws and regulations that could adversely affect our business”* in Part I, Item 1A. *Risk Factors* herein.

### Government Regulation

As a global company, we are subject to various laws and regulations applicable to parties doing business with the U.S. and other governments, including laws and regulations governing reporting obligations, interactions with government officials, performance of government contracts, the use and treatment of government furnished property and the nature of materials used in our products. In addition, the Company and its products are subject to import and export regulations present in each of the various jurisdictions in which we operate around the world. Certain of our products, including purchased components of such products, are subject to U.S. and non-U.S. export control laws and regulations, and may be exported only with the required export license or through an export license exception. The issuances of such licenses, in particular within the defense market, are subject to complex laws and regulations that could change frequently and with limited notice, depending on the jurisdiction, geopolitical events or other factors. The Company has systems in place to apply for licenses and to maintain compliance with any such regulations. Separately, we are required to comply with certain U.S. and non-U.S. economic sanctions and trade embargoes, as well as the terms of any preferential duty and/or tariff programs in which we participate.

For a discussion of certain risks related to government regulation, including export and import controls and sanctions, refer to the risk factors titled “*The Company is exposed to political, economic, military and other risks related to operating in countries outside the United States, and changes in general economic conditions, geopolitical conditions, U.S. and other countries’ trade policies and other factors beyond the Company’s control may adversely impact its business and operating results,” “The Company must comply with complex export and import controls as well as economic sanctions and trade embargoes imposed by the United States government and other countries,” “Our business and financial results may be adversely affected by government contracting risks,”* and “*Our international operations require us to comply with anti-corruption laws and regulations of the U.S. government and various foreign jurisdictions, and our business reputation and financial results may be impaired by improper conduct by any of our employees, customers, suppliers, distributors or any other business partners,”* in Part I, Item 1A. *Risk Factors* herein.

### Human Capital Management and Our Culture

The Company’s success is closely tied to the capability, adaptability and accountability of our diverse, global organization. One of the key components of our business strategy is the fostering of a collaborative and entrepreneurial management culture. Each of our general managers operates in a flat organizational structure and is enabled and incented to grow and develop their business, with the support of the resources of the larger organization. We believe this structure, with more than 140 general managers running unique, independent businesses, creates an environment and culture where each of our general managers has a more direct link to the success of their individual businesses and a more personal connection to the employees they oversee and the communities in which they operate.

As of December 31, 2025, the Company had approximately 170,000 employees worldwide, of which approximately 15,000 were located in the United States. Less than 10% of Amphenol’s U.S. workforce is represented by an independent trade union or covered by collective bargaining. The Company believes that it has a good relationship with both its unionized and non-unionized employees.

Our Board of Directors (the “Board”) is actively involved in overseeing the Company’s employee-related strategies and practices as well as the Company’s culture. This oversight is conducted both directly and through certain of the Board’s committees. At each of its regularly scheduled quarterly meetings, the Board reviews changes in key personnel and, at least once a year, meets with management to discuss various human resources related topics including succession planning. We believe the Company’s culture has been a critical component of the Company’s success and reinforcing that culture is a key responsibility of our executive management.

Our business spans the globe, and the employees in our facilities reflect the diversity of the communities in which we operate. At Amphenol, we promote and maintain a culture of respect and appreciation of differences in our employees. The Company generally relies on local management in every business unit to foster a strong culture consistent with the Company’s values and to be cognizant of local circumstances and requirements, which we believe creates a high degree of organizational stability and a deep commitment to our people and the local community. A key hallmark of our structure is our entrepreneurial culture that creates clear accountability for each of our general managers, who are our key business leaders.

The safety and well-being of our employees is critical to the successful operation of our business. Our health and safety activities are overseen by our corporate environmental, health, safety and sustainability leadership team and are managed by our local teams, who coordinate on-site safety programs, resources, reporting and training in our facilities. We believe that this model of coaching and tracking at the corporate level, but administering at the facility level, has allowed us to provide training and supervision that better fits the local needs of each of our workforces.

The Company is focused on providing fair and competitive compensation and benefits to our employees around the world. In the U.S., in addition to competitive compensation, the Company maintains various employee benefits such as health and related insurance, retirement savings programs and health savings and flexible spending accounts. Outside the U.S., we maintain compensation and other benefits competitive with local market conditions.

Amphenol strives to be a positive influence in the communities in which we operate around the world. Most of our community outreach is organized by our local management teams, which helps ensure that our efforts are working in support of the local communities in which our employees live and work.

### Sustainability Report

We have a shared commitment to create innovative products that enable our customers to improve the lives of people around the world, to support the well-being of our employees and communities and to sustain the health of our planet. We believe that long-term value for our Company is created through making sustainable business choices, building strong relationships with our stakeholders and engaging in good corporate governance. Whether through reducing our and our partners’ environmental footprint, following humane labor practices, supporting the development of our global team, ensuring the strength and integrity of our supply chain or giving back to our communities, we have always believed that it is not just good stewardship, but good business to focus on the long-term sustainability of Amphenol.

The Company publishes an annual sustainability report (“Sustainability Report”) to highlight our goals and areas of progress and success in sustainability matters, including climate-related topics. The Sustainability Report discusses our approach and progress on the environmental, social and governance issues most significant to our business, including related strategies, programs, goals and metrics that demonstrate our commitment to our stakeholders. The Sustainability Report is designed to inform and engage the Company’s broad range of stakeholders, such as investors, customers, suppliers, employees and members of the communities in which we operate, among others. Our 2024 Sustainability Report was prepared in accordance with the Global Reporting Initiative (“GRI”) Standards framework and topics identified under the Sustainability Accounting Standards Board (“SASB”) standards and outlines board and executive-level oversight of climate-related risks and opportunities identified in the International Sustainability Standards Board (“ISSB”) and Climate Scenario Analysis recommendations. The SASB standards and GRI and ISSB frameworks encourage companies to disclose climate-related topics that are important to certain interested stakeholders, even if not material for purposes of the U.S. securities laws. Furthermore, the materiality standards under these frameworks and other regimes we may consider are different from, and often more expansive than, the materiality standard under the U.S. securities laws. Our 2024 Sustainability Report is available on our website at https://amphenol.com/sustainability. The items discussed in our 2024 Sustainability Report have not required material capital expenditures or operating expenses, nor caused material operational challenges or risks to the Company’s business or results of operations beyond those items disclosed in Item 1A. *Risk Factors* within the risk factors titled “*The Company may be negatively impacted by extreme weather conditions and natural catastrophic events, including those caused or intensified by climate change,”* and “*The Company is subject to, and may continue to be subject to, incremental costs, risks and regulations associated with efforts to combat the negative effects of climate change and other sustainability matters.”* Information included in our 2024 Sustainability Report and our website is not incorporated by reference in, and does not form part of, this Annual Report.

### Available Information

The SEC maintains a website that contains reports, proxy and information statements and other information regarding issuers, including Amphenol, that file with the SEC. Any such documents that the Company files with the SEC can be obtained by the public on the SEC’s website at *http://www.sec.gov*. This Annual Report and all of the Company’s other filings with the SEC, such as quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements, and any amendments to such reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, are also available to view, free of charge, on the Company’s website, *www.amphenol.com*, as soon as reasonably practicable after they are electronically filed with, or furnished to, the SEC. Also included on the Company’s website are press releases, information about the Company’s financial results and performance, and other information about the Company’s business. Copies of this Annual Report are also available without charge, from Amphenol Corporation, Investor Relations, 358 Hall Avenue, Wallingford, CT 06492. The information on our website is not incorporated by reference in this Annual Report.

## Risk factors

As filed, 58,181 characters.

The Company’s business, operations, financial condition, liquidity, results of operations and stock price can be negatively affected by many risk factors. Investors should carefully consider the risks described below and all other information in this Annual Report. The Company’s past financial performance, including historical trends, should not be considered a reliable indicator of future performance. The risks and uncertainties described below are not the only ones facing the Company. Additional risks and uncertainties not presently known to the Company or that we currently consider immaterial may materialize and impair the Company’s business, operations, financial condition, liquidity, results of operations and/or stock price.

If actions taken by management to limit, monitor or control enterprise risk exposures are not successful, the Company’s business, operations, financial condition, liquidity and results of operations could be materially adversely affected. In such case, the trading price of the Company’s Common Stock and debt securities could decline and investors may lose all or part of their investment.

### RISKS RELATED TO OUR GLOBAL OPERATIONS

***The Company is exposed to political, economic, military and other risks related to operating in countries outside the United States, and changes in general economic conditions, geopolitical conditions, U.S. and other countries’ trade policies and other factors beyond the Company’s control may adversely impact its business and operating results.***

The Company’s operations and performance depend significantly on global, regional and U.S. economic and geopolitical conditions. During 2025, non-U.S. markets constituted approximately 65% of the Company’s net sales, with China constituting approximately 16% of the Company’s net sales. The Company employs approximately 90% of its workforce outside the United States. The Company’s customers are located throughout the world, and the Company has many manufacturing, administrative and sales facilities outside the United States. As of December 31, 2025, approximately 79% of the Company’s long-lived assets were located outside of the United States, with approximately 37% located in China. This compares to approximately 73% and 29%, respectively, in 2024. These increases relate primarily to the significant investments the Company has made to support sales of its AI-related products.

During the last few years, there have been significant changes to U.S. and other countries’ trade policies, export control laws, sanctions, legislation, treaties and tariffs, including U.S. trade policies and tariffs affecting several of the countries in which we operate. The U.S. continued to impose new tariffs on imports to the U.S. throughout 2025, and in response, several countries have imposed, or threatened to impose, reciprocal tariffs on imports from the U.S. and other retaliatory measures. These changes have, in certain cases, increased our costs of doing business. There is significant uncertainty about the future of trade relationships around the world, including potential changes to trade laws and regulations, trade policies, and tariffs. We cannot predict what additional actions may ultimately be taken by the U.S. or other governments with respect to tariffs or trade relations, what products may be subject to such actions (including subject to U.S. export control restrictions), what actions may be taken by the other countries in retaliation or whether we would be able to fully mitigate the impact of any such actions by pricing or other measures. The imposition of additional tariffs or other trade barriers could increase our costs in certain markets and may cause our customers to find alternative sourcing or could make it more difficult for us to sell our products in some markets or to some customers, which may result in declines in our net sales and operating income. We have manufacturing facilities in certain jurisdictions that are authorized to operate under preferential duty and/or tariff programs that provide for reduced tariffs and/or eased import and export regulations and are subject to compliance with the terms of such programs, which are subject to increased regulatory scrutiny and oversight. Failure to comply with the terms of such programs could increase our manufacturing costs and adversely affect our business, operating results and financial condition. Additionally, it is possible that government policy changes and uncertainty about such changes could increase market volatility and currency exchange rate fluctuations. As a result of these dynamics, we cannot predict the impact to our business of any future changes to the U.S.’s or other countries’ trading relationships or the impact of new laws or regulations adopted by the U.S. or other countries.

In addition to the risks noted above, a number of other legal, economic and geopolitical factors could have a material adverse effect on the Company’s business, operations, financial condition, liquidity and/or results of operations, such as:

- a global or regional economic slowdown or recession in any of the Company’s end markets (or a prolonging or intensification of such a slowdown or recession), which could negatively affect the financial condition of our customers and result in reduced demand;
- postponement of customer spending, in response to tighter credit, inflationary pressures, financial market volatility and other global economic factors;
- effects of significant changes in economic, monetary and/or fiscal policies, including interest rate changes by the U.S. Federal Reserve or other international central banking systems, foreign currency fluctuations and significant income tax changes;
- intergovernmental and other conflicts or actions, including, but not limited to, armed conflict, such as the ongoing military conflicts between Ukraine and Russia, trade wars, cyberattacks and acts of terrorism or war;
- employment regulations and local labor conditions, including increases in employment costs, particularly in low-cost regions in which the Company currently operates;
- industrial policies in various countries that favor domestic industries over multinationals or that restrict foreign companies altogether;
- difficulties protecting intellectual property;
- longer payment cycles;
- changes in exchange control regulations or tax policy, including any government actions that prohibit, limit or increase the cost of paying a dividend or otherwise moving cash between the Company’s subsidiaries located in different countries;
- credit risks and other challenges in collecting accounts receivable; and
- changes in assumptions, such as discount rates, along with lower than expected investment returns and performance related to the Company’s benefit plans.

***The Company and certain of its suppliers and customers have experienced, and may in the future experience, difficulties obtaining certain raw materials and components, and the cost of certain of the Company’s raw materials and components may increase.***

The Company purchases a wide variety of raw materials for the manufacture of its products, including (i) precious metals such as gold, silver and palladium, (ii) aluminum, steel, copper, titanium and metal alloy products, (iii) copper wire and optical fiber and (iv) plastic materials. In the past, prices for these and certain other basic materials have experienced significant volatility. While the Company does not currently anticipate significant, broad-based difficulties in obtaining raw materials or components necessary for production, it has, from time to time, experienced certain difficulties, and inflationary pressures, increased commodity prices and regulatory restrictions may impact the cost and availability of certain raw materials and components used by the Company and result in supply shortages for discrete raw materials or components. Moreover, the Company may not be able to pass along any increased raw material or component prices to its customers and may not be able to procure and obtain sufficient quantities of raw materials and components in a timely manner and at acceptable prices from our suppliers. In limited instances, we depend on a single source of supply or participate in commodity markets that may be served by a limited number of suppliers, and for some components, alternative sources may not exist or may be unable to produce the quantities of those components necessary to satisfy our production requirements. Delays in obtaining supplies may result from a number of factors affecting our suppliers, and any delay could impair our ability to deliver products to our customers. Moreover, the cost and availability of raw materials may fluctuate significantly due to external factors including, but not limited to, product scarcity, war or other armed conflict, logistical challenges, disruptions caused by climate change and adverse weather conditions, commodity market fluctuations, currency fluctuations, governmental policies and regulations such as tariffs and import restrictions, as well as pandemics and epidemics, which may, in turn, negatively impact our results of operations and financial condition.

***Cybersecurity incidents affecting our information technology systems could disrupt business operations or cause the release of highly sensitive confidential or personal information, resulting in adverse impacts to our reputation and operating results and potentially leading to litigation and/or governmental investigations, fines and other penalties.***

We rely on both our own information technology systems and those provided by third-party vendors to support critical business operations. These systems are subject to numerous and evolving cybersecurity threats that are designed to disrupt operations or gain unauthorized access and threaten the confidentiality, integrity and availability of our information technology systems and confidential information. These threats may arise from diverse threat actors such as state-sponsored organizations and opportunistic hackers and hacktivists, as well as through diverse attack vectors, including, but not limited to, malware, social engineering/phishing, credential harvesting, ransomware, malfeasance by insiders, human or technological error and other increasingly sophisticated attacks. Cyberattacks continue to expand and evolve, making it difficult to detect and prevent such threats from impacting the Company. Globally, there continues to be an elevated volume of cyber threats, exploitation of previously unknown software vulnerabilities, ransomware attempts and social engineering attacks, such as phishing and impersonation, and attackers increasingly use tools and techniques that are designed to circumvent controls, avoid detection, and remove or obfuscate forensic evidence. The proliferation of Internet of Things (“IoT”) devices and Operational Technology (“OT”) systems has expanded the potential points of entry for an unauthorized user to access a system or network. Threat actors are targeting IoT and OT systems to disrupt critical infrastructure or gain lateral access to corporate networks. In addition, the rise of AI and machine learning has led to more sophisticated and deceptive attacks. Cybercriminals are increasingly using AI-generated videos, audio and text to deceive individuals and organizations. These attacks can be used for impersonation in social engineering and fraud. Attackers can manipulate systems in new ways and more easily perform functions at scale. In addition, global remote working dynamics continue to present additional risk that threat actors will engage in social engineering (for example, phishing) and exploit vulnerabilities in corporate and non-corporate networks. As a result, we may be unable to detect, investigate, remediate, or recover from future attacks or incidents, or avoid a material adverse impact to our business.

While we maintain a cybersecurity risk management program, there can be no assurance that it will eliminate all risk in protecting our information technology systems and confidential information. We rely on third-party providers, including cloud hosting and managed security service providers, for critical aspects of our information technology and cybersecurity infrastructure. A cybersecurity incident affecting any such provider, including incidents involving our cloud hosting environments, could materially disrupt our operations, even if our internal systems are not directly compromised. While the impact of previous attacks has not been material, future cybersecurity incidents could lead to unauthorized access to and potentially impair the Company’s information technology systems, products, customers, suppliers and third-party service providers. Cybersecurity incidents could potentially result in the disruption of our business operations and/or misappropriation, destruction or corruption of critical data and confidential, personal, or proprietary information. Cybersecurity events could result in the loss of or inability to access confidential information and critical business, financial or other data, and/or cause the release of highly sensitive confidential or personal information. Further, cybersecurity incidents could result from unauthorized parties gaining access to our systems or information through fraudulent or other means of deceiving our employees, suppliers or third-party service providers. Our and key third-party information technology systems and infrastructure are susceptible to disruptions from cybersecurity incidents, ransomware attacks, security breaches, computer viruses, security vulnerabilities or “bugs” in software or hardware, outages, systems failures, natural disasters, adverse public health developments, or other catastrophic events, any of which could result in reputational damage that may cause the loss of existing or future customers, the loss of our intellectual property, the release of highly sensitive confidential or personal information, the inability to access critical data and other operational disruptions, litigation with third parties (including class actions) and/or governmental investigations, fines and other penalties, among other things, which could have a material adverse effect on our business, financial condition and results of operations. Finally, we cannot guarantee that any costs and liabilities incurred in relation to an attack or incident will be covered by our existing insurance policies or that applicable insurance will be available to us in the future on economically reasonable terms or at all.

We and our business partners maintain significant amounts of data electronically in locations around the world. This data relates to all aspects of our business, including financial information and current and future products under development, and also contains certain customer, supplier, partner and employee data, such as personal information. There is a risk of intrusion, cyberattacks or tampering that could compromise the integrity and privacy of this data or make the data inaccessible to us. In addition, in certain cases, we outsource the storage of this data to third-party business partners. Those partners may also be subject to data intrusion or a cyberattack. Any compromise of the data could substantially disrupt our operations, impact future business opportunities, harm our customers, employees and other business partners, damage our reputation, violate applicable laws, regulations, policies and contractual obligations and subject us to potentially significant costs and liabilities, including litigation or other enforcement actions. For further discussion of the Company’s risk management, strategy, and governance around cybersecurity, refer to Part I, Item 1C. *Cybersecurity* herein.

In the course of operating our business, we and certain of our third-party providers collect, maintain and process data about customers, employees, suppliers and others, including personally identifiable information. We are therefore subject to a variety of laws, regulations and other requirements relating to information security and privacy, including those related to handling of personally identifiable information. The regulatory environment surrounding information security and privacy is increasingly demanding, with frequent imposition of new and changing requirements. The application and interpretation of such requirements are constantly evolving and are subject to change, creating a complex compliance environment. In some cases, these requirements may either be unclear in their interpretation and application, or they may have inconsistent or conflicting requirements. Further, there has been a substantial increase in legislative activity and regulatory focus on data privacy and security in the U.S. and elsewhere, including in relation to cybersecurity incidents. These laws and regulations impose significant obligations on companies regarding how they collect, store, protect, process and transfer personal information and can impose significant fines for non-compliance. Any failure or perceived failure by us to comply with laws, regulations and other requirements relating to information security and privacy could result in legal claims or proceedings (including class actions), regulatory investigations or enforcement actions. We could incur significant costs investigating and defending such claims and, if found liable, pay significant fines, penalties and other related costs or be required to make changes to our business. If any of these events were to occur, our reputation may be damaged, and our business, results of operations, and financial condition could be materially adversely affected.

***The Company may be negatively impacted by extreme weather conditions and natural catastrophic events, including those caused or intensified by climate change.***

From time to time, extreme weather conditions and natural disasters have negatively impacted, and may continue to negatively impact, portions of our operations, as well as the operations of our suppliers, vendors, customers and distributors. Such unpredictable weather conditions and natural disasters including, but not limited to, severe storms, earthquakes, fires, droughts, floods, hurricanes, tornadoes, and stronger and longer-lasting weather patterns, including heat waves and freezes and ambient temperature or precipitation changes, and their consequences and effects have, in the past, temporarily disrupted our business operations both in the United States and abroad. There are climate-related risks in all of the countries in which we operate, and climate change may exacerbate certain such events and may also contribute to other changes that could also adversely impact our operations. These events could cause some of the Company’s operations to suffer from supply chain disruptions and potential delays in fulfilling customer orders or order cancellations altogether, lost business and sales, increased costs and compliance burdens, energy and water scarcity, changing costs or availability of insurance, and/or property damage or harm to our people, each and all of which could have an adverse effect on our business, operations, financial condition and results of operations.

***Our international operations require us to comply with anti-corruption laws and regulations of the U.S. government and various foreign jurisdictions, and our business reputation and financial results may be impaired by improper conduct by any of our employees, customers, suppliers, distributors or any other business partners.***

Doing business on a worldwide basis requires us and our subsidiaries to comply with the anti-corruption laws and regulations of the U.S. government and various foreign jurisdictions, and our failure to comply with these rules and regulations may expose us to significant liabilities. These laws and regulations may apply to companies, individual directors, officers, employees, subcontractors and agents, and may restrict our operations, trade practices, investment decisions and partnering activities. In particular, our international operations are subject to U.S. and foreign anti-corruption laws and regulations, such as the Foreign Corrupt Practices Act of 1977, as amended (“FCPA”). As part of our business, we deal with state-owned business enterprises, the employees and representatives of which may be considered foreign officials for purposes of the FCPA. In addition, some of the foreign locations in which we operate lack a developed legal system and have elevated levels of corruption. As a result of the above activities, we are exposed to the risk of violating U.S. and foreign anti-corruption laws.

There can be no assurance that our policies and procedures designed for complying with applicable U.S. and foreign laws and regulations will be effective in preventing our directors, officers, employees, subcontractors and agents from taking actions that violate these legal requirements. Violations of these legal requirements could subject us to criminal fines and imprisonment, civil penalties, disgorgement of profits, injunctions, debarment from government contracts and other remedial measures. In addition, any actual or alleged violations could disrupt our operations, cause reputational harm, involve significant management distraction and result in a material adverse effect on our competitive position, results of operations, cash flows or financial condition.

***The Company’s results can be positively or negatively affected by changes in foreign currency exchange rates.***

The Company conducts business in many foreign currencies through its worldwide operations, and as a result, is subject to foreign exchange exposure due to changes in exchange rates of the various currencies, including possible foreign currency restrictions and/or devaluations. Changes in exchange rates can positively or negatively affect the Company’s sales, operating margins and equity. There can be no assurance that any or all actions taken by the Company to mitigate currency risk, such as locating factories in the same country or region in which products are sold, hedging contracts, cost reduction and pricing actions or working capital management, will be fully effective in successfully managing currency risk. A significant and sudden decline in the value of any of the foreign currencies of the Company’s worldwide operations could have an adverse effect on the Company’s business, financial condition, results of operations and cash flows.

***The Company is dependent on attracting, recruiting, hiring and retaining skilled employees, including our various management teams.***

Our performance is dependent on our ability to attract, recruit, hire and retain skilled personnel, including our various management teams. It is possible that scarce labor market conditions, which the Company has experienced from time to time, and changes in immigration policies in the U.S. and other countries in which we operate could have an adverse effect on our ability to attract, recruit, hire and retain skilled employees globally, which in turn, could have an adverse effect on the Company’s business, financial condition and results of operations. In addition, our business could also be adversely impacted by any significant increases in labor costs, including wages and benefits.

### RISKS RELATED TO OUR END MARKETS

### The Company encounters competition in all areas of our business.

The Company competes primarily on the basis of technology innovation, product quality and performance, price, customer service and delivery time. Competitors include large, diversified companies, some of which have comparable assets and financial resources, as well as medium- to small-sized companies that have smaller portfolios or specialize in one or more of our product lines. Rapid technological changes could also lead to the entry of new competitors of various sizes, against whom we may not be able to successfully compete. There can be no assurance that the Company will be able to compete successfully against existing or new competition, and the inability to do so may result in price reductions, reduced margins, or loss of market share, any of which could have an adverse effect on the Company’s business, financial condition and results of operations.

***The Company is dependent on end market dynamics to sell its products, and some of the Company’s end markets are subject to cyclical and at times rapid periods of reduced demand.***

The Company is dependent on end market dynamics to sell its products, and its operating results could be adversely affected by cyclical and at times rapid periods of reduced demand in any of its end markets. Demand for products can be subject to rapid changes arising from a wide variety of factors, including new technology developments, changes in general economic conditions, consolidation within an industry, changes in access to financing, competition, new legislation and regulation, an evolving global trade environment, prolonged work stoppages or other disputes with labor unions and governmental budgetary constraints, among many other factors. For example, some of our customers are making significant investments in AI, and these investments are driving robust demand for certain of the Company’s products. The continued growth of this market will be dependent upon many factors, including our go-forward market share for such products, the demand for our customers’ products and services, the amount and mix of capital spending by our customers, changing technology priorities and changes in government regulations and policies related to AI. Periodic downturns in any of our customers’ end markets can significantly reduce demand for certain of our products and result in customers canceling, delaying, reducing or otherwise modifying their purchase commitments, which could have a material adverse effect on the Company’s business, financial condition and results of operations.

### RISKS RELATED TO ACQUISITIONS

***The Company has at times experienced difficulties and unanticipated expenses in connection with purchasing and integrating newly acquired businesses.***

The Company has completed numerous acquisitions in recent years, including five in 2025 and two in 2024, some of which are large and complex. Additionally, on January 9, 2026, the Company closed the CommScope acquisition, which is the largest acquisition in the Company’s history. The Company anticipates that it will continue to pursue acquisition opportunities as part of its growth strategy. From time to time, the Company experiences difficulty and unanticipated expenses associated with purchasing and assimilating acquisitions into the Company, and acquisitions do not always perform and deliver the financial benefits expected. In addition, the Company may not be able to close acquisitions as anticipated, or at all. The Company has also experienced challenges at times following the acquisition of a new company or business, including, but not limited to, managing the operations, manufacturing facilities and technology; maintaining and increasing the customer base; retaining the management team; managing the response of business partners and competitors; exposure to new regions and countries, including managing the impact of particular economic, tax, currency, political, legal and regulatory risks associated with specific countries; or retaining key employees, suppliers and distributors. These transactions may also lead to litigation, and in certain limited cases, the Company has pursued indemnification claims against seller(s) of an acquired business or sought recovery under third - party insurance policies for pre-acquisition liabilities, breaches of representations, warranties or covenants or for other reasons provided for in the relevant acquisition agreement or insurance policy. To the extent we pursue indemnification claims against such seller(s) or insurers, such seller(s) or insurers may successfully contest such claims and/or may not have the financial capacity to compensate us for such claims, or such claims may otherwise be difficult or impractical to enforce. We cannot predict or guarantee whether, when and to what extent anticipated cost savings, benefits, margin improvements and growth prospects will be achieved from recent or future acquisitions.

***The Company may in the future incur goodwill and other intangible asset impairment charges.***

On December 31, 2025, the total assets of the Company were $36.2 billion, which included $10.6 billion of goodwill (the excess of fair value of consideration paid over the fair value of net identifiable assets of businesses acquired) and $2.2 billion of other intangible assets, net. The Company performs annual evaluations (or more frequently, if necessary) for the potential impairment of the carrying value of goodwill and other intangible assets. Such evaluations to date have not resulted in the need to recognize an impairment. However, if the financial performance of the Company’s businesses were to decline significantly, the Company could incur a material non-cash charge to its income statement for the impairment of goodwill and other intangible assets. Furthermore, we cannot provide assurance that impairment charges in the future will not be required if the expected cash flow estimates as projected by management do not occur, especially if an economic recession occurs and continues for a lengthy period or becomes more severe, or if acquisitions made by the Company fail to achieve expected returns.

### RISKS RELATED TO OUR LIQUIDITY AND CAPITAL RESOURCES

***The Company’s credit agreements and senior notes contain certain requirements, which if breached, could have a material adverse effect on the Company.***

The third amended and restated credit agreement governs our $3.0 billion unsecured revolving credit facility (the “Revolving Credit Facility”), which also backstops the Company’s U.S. commercial paper program (“U.S. Commercial Paper Program”) and Euro commercial paper program (“Euro Commercial Paper Program”, and together with the U.S. Commercial Paper Program, “Commercial Paper Programs”). The Revolving Credit Facility contains financial and other covenants, such as a limit on the ratio of debt to earnings before interest, taxes, depreciation and amortization, a limit on priority indebtedness and limits on incurrence of liens. The Company also has similar financial and other covenants associated with its three-year unsecured delayed draw term loan credit agreement (the “Three-Year Delayed Draw Term Loan”) and 364-day unsecured delayed draw term loan credit agreement (the “364-Day Delayed Draw Term Loan” and, together with the Three-Year Delayed Draw Term Loan, the “Delayed Draw Term Loans”), each of which was entered into in August 2025. The ability to meet the financial covenants can be affected by events beyond the Company’s control, and the Company cannot provide assurance that it will meet those tests. A breach of any of these covenants could result in a default under the Revolving Credit Facility or the Delayed Draw Term Loans, as applicable. Upon the occurrence of an event of default under the Revolving Credit Facility or the Delayed Draw Term Loans, the applicable lenders could terminate all applicable commitments to extend further credit thereunder (if any) and elect to declare amounts outstanding thereunder to be immediately due and payable, which could result in the acceleration of certain of the Company’s other indebtedness and the Company not having sufficient assets to repay indebtedness under the Revolving Credit Facility, the Delayed Draw Term Loans and such other debt instruments. As of December 31, 2025, the Company had no borrowings outstanding under the Revolving Credit Facility, the Delayed Draw Term Loans, or the Commercial Paper Programs. However, the Company borrowed $1,534.1 million under each of the Delayed Draw Term Loans in January 2026 to fund a portion of the consideration for the CommScope acquisition. In addition, the Company borrowed under the U.S. Commercial Paper Program throughout 2025, and the Company may make borrowings under the Revolving Credit Facility and the Commercial Paper Programs from time to time in 2026 and beyond.

In addition to the Revolving Credit Facility and the Delayed Draw Term Loans, the Company’s various senior notes, some of which were issued during 2025, also impose certain obligations on the Company and prohibit various actions by the Company unless it satisfies certain financial requirements. While the Company was compliant with all such requirements as of December 31, 2025, there can be no assurance that the Company will remain in compliance with such requirements.

***Financing a portion of the consideration of the CommScope acquisition resulted in an increase in the Company’s debt and interest expense, which could adversely affect the Company’s results of operations, cash flows and financial condition.***

Financing a portion of the consideration of the CommScope acquisition resulted in a significant increase in the Company’s debt. This increase in debt requires a larger portion of the Company’s cash flow to be dedicated to the payment of principal and interest on its debt, which could, among other things, prevent the Company from carrying out capital spending that is necessary or important to the Company’s growth strategy and reduce our flexibility to respond to changing business and economic conditions. Further, the amount of cash required for the payment of principal and interest on the increased debt, and thus the demands on the Company’s capital resources, have increased. More specifically, the Company expects interest expense, net of interest income, to increase from $367.8 million in 2025 to approximately $800.0 million in 2026. In addition, the Company may incur additional debt in the future that could further exacerbate these risks, any of which could adversely affect the Company’s results of operations, cash flows and financial condition.

#### The Company’s results may be negatively affected by changing interest rates.

The Company is subject to interest rate volatility with regard to existing and future issuances of debt. The Company monitors its mix of fixed-rate and variable-rate debt, as well as its mix of short-term and long-term debt. As of December 31, 2025, 3% of the Company’s outstanding borrowings were subject to floating interest rates. However, outstanding debt subject to floating interest rates will be higher going forward as a result of the borrowings under the Delayed Draw Term Loans that occurred subsequent to December 31, 2025, as discussed above. To the extent that interest rates change, our interest expense and interest payments on floating rate debt will be impacted accordingly. There can be no assurance that interest rates will not change significantly from current levels.

***The Company relies on the global capital markets, and an inability to access those markets on favorable terms could adversely affect the Company’s results.***

The Company has used the global capital markets to raise capital to invest in its business and make strategic acquisitions. The capital and credit markets have experienced significant volatility in the past. If general economic and capital market conditions deteriorate significantly, it could become more difficult to access capital to finance capital investments, acquisitions and other initiatives including dividends and share repurchases, which could have a material adverse effect on the Company’s business, financial condition, results of operations or cash flows. In addition, we cannot guarantee that we will be able to maintain our current credit rating. If the credit rating agencies that rate the Company’s debt were to downgrade the Company’s credit rating, including any announcement that the Company’s credit rating is under further review for a downgrade, it would likely increase the Company’s cost of capital and make it more difficult for the Company to obtain new financing and access capital markets, which could also have a material adverse effect on the Company’s business, financial condition, results of operations or cash flows.

### RISKS RELATED TO LEGAL AND REGULATORY MATTERS

***Our business and financial results may be adversely affected by government contracting risks.***

We, as well as some of our customers, are subject to various laws and regulations applicable to parties doing business with the U.S. and other governments, including laws and regulations governing reporting, cybersecurity and procurement obligations, interactions with government officials, performance of government contracts, the use and treatment of government furnished property and the nature of materials used in our products, many of which are complex, frequently changing, and subject to varying interpretations. We may be unilaterally suspended or barred from conducting business with the U.S. and other foreign governments or their suppliers (both directly and indirectly), become subject to fines or other sanctions or prohibited from taking certain actions if we are found to have violated such laws or regulations. For example, under the executive order titled “Prioritizing the Warfighter in Defense Contracting” issued in January 2026, defense contractors designated as underperforming by the Secretary of War are prohibited from conducting stock buybacks and issuing dividends until their performance improves. As a result of the need to comply with these numerous laws and regulations, we are subject to increased risks of governmental investigations, civil fraud actions, criminal prosecutions, whistleblower lawsuits and other enforcement actions. The U.S. laws and regulations to which we are subject include, but are not limited to, the Export Administration Regulations, the Federal Acquisition Regulation, the False Claims Act, International Traffic in Arms Regulations, regulations from the Bureau of Alcohol, Tobacco and Firearms and the FCPA. Moreover, we are subject to a wide range of similar laws and regulations in other countries throughout the world. Although we have compliance programs in place designed to reduce the likelihood of potential violations of these laws and regulations, our employees, contractors, or agents could violate such laws and regulations or our policies and procedures. Failure, or the perceived failure, to comply with applicable requirements also could harm our reputation and our ability to compete for future government contracts or sell commercial equivalent products. Any of these outcomes could result in fines or sanctions and may have a material adverse effect on our business, operations, financial condition, liquidity, and results of operations.

In addition, U.S. government contracts are subject to modification, curtailment or termination by the U.S. government without prior written notice, either for convenience or for default as a result of our failure to perform under the applicable contract. If our contracts are terminated by the U.S. government as a result of our default, we could be liable for additional costs the U.S. government incurs in acquiring undelivered goods or services from another source and any other damages it suffers. Furthermore, the U.S. government periodically audits our governmental contract costs, which could result in fines, penalties or adjustment of costs and prices under the contracts. Any such fines, penalties or payment adjustments resulting from such audits could adversely affect our reputation, business, operations, financial condition, liquidity, and results of operations.

***The Company must comply with complex export and import controls as well as economic sanctions and trade embargoes imposed by the U.S. government and other countries.***

Certain of our products, including purchased components of such products, are subject to U.S. and non-U.S. export control laws and regulations, and may be exported only with the required export license or through an export license exception. In addition, we are required to comply with certain U.S. and non-U.S. economic sanctions and trade embargoes that restrict our ability to transact or deal with certain persons, countries, regions, and governments. These laws and regulations are complex, may change frequently and without prior notice, have generally become more stringent over time and have intensified under recent U.S. administrations, especially in light of ongoing tensions between the U.S. and China, as well as other countries. For example, in 2019, the U.S. government added certain companies based in China to the “Entity List” maintained by the U.S. Department of Commerce, which imposes additional restrictions on sales to such companies. Since 2019, numerous other companies have been added to that list. Further, in 2022, the U.S. Commerce Department’s Bureau of Industry and Security (“BIS”) released new export control regulations that restrict the provision to China of certain technology, software, manufacturing equipment and commodities that are used to make certain advanced computing integrated circuits (“ICs”) and supercomputers. These changes include new restrictions on the ability of U.S. companies to provide certain services to any facility in China that manufactures certain advanced ICs. Since 2022, numerous other related rules and regulations have been implemented by BIS. In response to these regulations, the Chinese government has implemented its own set of import and export rules and regulations and added certain U.S.-based companies to the Chinese government’s “Unreliable Entity List”, which imposes additional restrictions on such companies. Although, to date, none of such restrictions have had a material adverse effect on the Company’s business, financial condition and results of operations, the U.S. and Chinese governments have the power to place even greater restrictions, and such restrictions could further limit or prohibit the Company from selling its products or providing its services. In addition, we cannot ensure that our policies and procedures designed to maintain compliance with applicable rules and regulations will be effective in preventing instances of non-compliance. If we were to fail to comply with applicable export control restrictions (for example, by failing to obtain required export licensing), customs regulations, economic sanctions and other laws, we could be subject to substantial civil and criminal penalties, including fines, the incarceration of responsible employees and managers, reputational harm, and the possible loss of export or import privileges. In addition, if our distributors fail to obtain appropriate import, export or re-export licenses or permits, we may also be adversely affected through reputational harm and penalties. Obtaining the necessary export license for a particular sale may be time-consuming and may result in the delay or loss of sales opportunities.

***Changes in fiscal and tax policies as well as audits and examinations by taxing authorities could impact the Company’s results.***

The Company is subject to tax in all jurisdictions in which it operates, including the Company’s two largest markets, the U.S. and China. Any tax-related audits or examinations or, changes in tax laws, regulations, accounting standards for income taxes and/or other tax guidance could materially impact the Company’s current and non-current tax liabilities, along with deferred tax assets and liabilities, and consequently, our financial condition, results of operations or cash flows.

In 2025, certain of the Company’s subsidiaries based in China received notices from relevant tax authorities challenging certain of the Company’s tax positions taken over up to an eight-year period. Although the Company believes its tax positions are appropriate and is currently discussing the matter with the relevant tax authorities, the Company has recorded a charge of $100.0 million in the fourth quarter of 2025. The $100.0 million charge represents the Company’s current best estimate of the costs that may be incurred to resolve this matter; however, the range of potential costs is estimated to be $100.0 million to approximately $300.0 million. The Company is unable to estimate the timing for resolution of this matter.

On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”), a tax and spending package that introduced several tax-related provisions, including a 15% corporate alternative minimum tax (“CAMT”) on certain large corporations and a 1% excise tax on certain corporate stock repurchases, was enacted into law. Companies were required to reassess their valuation allowances for certain affected deferred tax assets in the period of enactment but did not need to remeasure deferred tax balances for the related tax accounting implications of the CAMT. The IRA provisions, which became effective for Amphenol beginning on January 1, 2023, did not have a material impact on the Company during the years ended December 31, 2025 and 2024. While the full impact of these provisions in the future depends on several factors, including interpretive regulatory guidance, which has not yet been released, the Company does not currently believe that the provisions of the IRA, including several other non-tax related provisions, will have a material impact on its financial condition, results of operations, liquidity and cash flows.

On July 4, 2025, the U.S. federal government enacted the tax and spending bill H.R. 1. This legislation contains changes to previously enacted provisions of the Internal Revenue Code and provides for extensions of certain expiring tax provisions included in the Tax Cuts and Jobs Act. Certain corporate tax provisions in H.R. 1 were enacted with retroactive effect to January 1, 2025. H.R. 1 did not have a material impact on our effective tax rate for the year ended December 31, 2025. The Company continues to evaluate the corporate tax provisions contained within H.R. 1, and the future impact of H.R. 1 depends on several factors, including interpretive regulatory guidance, which has not yet been released.

The Organization for Economic Co-operation and Development (OECD)/G20 Inclusive Framework, known as Pillar Two, provides guidance for a global minimum tax. This guidance lays out a common approach for adopting the global minimum tax and enacting local legislation codifying the provisions that all 142 countries in the Inclusive Framework agreed to by consensus. The European Union (“EU”) member states have agreed to adopt these rules in two stages. The first component became effective on January 1, 2024, and the second component became effective on January 1, 2025. Non-EU countries have enacted or are expected to enact legislation on a similar timeline. Certain countries in which we operate have already enacted legislation to adopt the Pillar Two framework, while several other countries are expected to also implement similar legislation with varying effective dates in the future. When and how this framework is adopted or enacted by the various countries in which we do business will increase tax complexity and may increase uncertainty and adversely affect our provision for income taxes in the U.S. and non-U.S. jurisdictions.

***We may experience difficulties in enforcing our intellectual property rights, which could result in loss of market share, and we may be subject to claims of infringement of the intellectual property rights of others.***

We rely on patent and trade secret laws, copyright, trademark, confidentiality procedures, controls and contractual commitments to protect our intellectual property rights. Despite our efforts, these protections may be limited and, from time to time, we encounter difficulties in protecting our intellectual property rights, particularly in certain countries outside the U.S., which could result in costly product redesign efforts, discontinuance of certain product offerings or other harm to our competitive position. We cannot provide assurance that the patents that we hold or may obtain will provide meaningful protection against our competitors. In addition, we may choose to not apply for patent protection or may fail to apply for patent protection in a timely fashion. Changes in laws concerning intellectual property, or the enforcement of such laws, may affect our ability to prevent or address the misappropriation of, or the unauthorized use of, our intellectual property, potentially resulting in loss of market share. Litigation may be necessary to enforce our intellectual property rights. Litigation is inherently uncertain, and outcomes are unpredictable. If we cannot protect our intellectual property rights against unauthorized copying or use, or other misappropriation, we may not remain competitive.

The intellectual property rights of others could inhibit our ability to introduce new products. Other companies hold patents on technologies used in our industries and are aggressively seeking to expand, enforce and license their patent portfolios. We periodically receive notices from, or have lawsuits filed against us by, third parties claiming infringement, misappropriation or other misuse of their intellectual property rights and/or breach of our agreements with them. These third parties may include entities that do not have the capabilities to design, manufacture, or distribute products or that acquire intellectual property like patents for the sole purpose of monetizing their acquired intellectual property through asserting claims of infringement and misuse. In addition, some foreign competitors may take advantage of the intellectual property laws in their home countries and the more favorable litigation and regulatory environment to our detriment. Third-party claims of infringement may result in loss of revenue, substantial costs or lead to monetary damages or injunctive relief against us.

***The Company is subject to customer claims, litigation and other regulatory or legal proceedings.***

The Company is currently engaged in, or subject to, various customer claims, litigation and other regulatory and legal matters and may be subject to additional claims, litigation and other regulatory or legal proceedings in the future. Such matters expose the Company to risks that could be material, including, but not limited to, risks related to employment disputes, tax controversies, government investigations, intellectual property infringement, compliance with environmental laws, securities laws violations, unfair sales practices, product safety and liability, and product warranty, indemnity and other contract-related claims. These matters may subject the Company to lawsuits, voluntary or forced product recalls, government investigations and criminal liability, including claims for compensatory, punitive or consequential damages, and could result in diverting our management’s attention, disruptions to our business and significant legal expenses. These matters could also damage our reputation, harm our relationships with customers or negatively affect product demand.

The insurance coverages that the Company maintains may not apply to all types of claims and proceedings, and, where insurance exists, the amount of insurance coverage may not be adequate to cover the total claims and liabilities. In some cases, particularly with respect to product warranty claims from customers, we self-insure against this risk, meaning that any product liability claims will likely have to be paid from Company funds and not by insurance. Any current or future substantial liabilities or regulatory actions could have a material adverse effect on our business, financial condition, cash flows and reputation.

***The Company is subject to environmental laws and regulations that could adversely affect our business.***

The Company operates in both the United States and various foreign jurisdictions, and we must comply with locally enacted laws and regulations addressing health, safety and environmental matters in such jurisdictions in which we manufacture and/or sell our products. Certain operations of the Company are subject to locally enacted environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company and its operations may be subject to liabilities, regardless of fault, for investigative and/or remediation efforts on such matters that may arise at any of the Company’s former or current properties, either owned or leased. Environmental liabilities can result from the use of hazardous materials in production, the disposal of products, damages associated with the use of any of our products or other related matters. We cannot be certain as to the potential impact of any changes to environmental conditions or environmental policies that may arise in any of our jurisdictions. Our failure to comply with these local environmental laws and regulations could result in fines or other punitive damages and/or modifications to our production processes as well as subject us to reputational harm, any of which could adversely impact our financial position, results of operations, or cash flows.

***The Company is subject to, and may continue to be subject to, incremental costs, risks and regulations associated with efforts to combat the negative effects of climate change and other sustainability matters.***

There is increased public awareness regarding climate change, human capital and other sustainability matters. This increased focus has led to certain international treaties and agreements and legislative and regulatory efforts. In addition to the risks discussed under the risk factor titled “*The Company may be negatively impacted by extreme weather conditions and natural catastrophic events, including those caused or intensified by climate change,”* the Company may also be subject to larger, global climate change initiatives, laws, regulations or orders which seek to reduce greenhouse gas (“GHG”) emissions. In addition to government requirements, certain of our customers are also imposing climate-related requirements on their suppliers, including us. Any failure, or perceived failure, to comply with these requirements may result in reduced demand for our products, reputational harm, or other adverse impacts to our business.

Given our global manufacturing presence, any future regulations relating to GHG emissions and/or other climate change-related laws and regulations, beyond initiatives already in process at the Company, could subject us to additional and/or unforeseen compliance costs and limitations, increased energy and raw material costs and incremental capital expenditure requirements. In addition, certain governmental bodies have adopted, and are considering adopting additional, mandatory climate-related reporting obligations, and potentially GHG emissions reduction requirements, and these regulatory developments, to the extent we are subject to them, will likely result in increased corporate and operational general and administrative efforts and associated costs and expenses.

In recent years, both U.S. and foreign regulations have evolved, and there have been various new laws around the world that have been passed and will require additional related disclosure or substantive action on sustainability matters. For example, in Europe, the EU finalized the Corporate Sustainability Reporting Directive, which introduces more prescriptive sustainability reporting requirements for EU companies as well as certain non-EU companies. While in 2025, the SEC announced that it had voted to end its defense of Final Rule 33-11275*: The Enhancement and Standardization of Climate-Related Disclosures for Investors*, the litigation remains pending, which makes the ultimate outcome and compliance needs uncertain. We continue to monitor and review developing sustainability frameworks, standards, rules and regulations, including those passed by U.S. states, such as the two climate-related disclosure bills (*Senate Bill-253, Climate Corporate Data Accountability Act* and *Senate Bill-261, Greenhouse Gases: Climate-Related Financial Risk*) that will require initial disclosures in 2026. Such laws are not uniform and may be inconsistently applied, which can increase the complexity and cost of compliance as well as any associated litigation or enforcement risks.

In addition to the requirement to comply with these enacted laws and regulations and other potential mandatory requirements, any future regulatory changes in any of the jurisdictions in which we operate, in addition to those already enacted, could result in transition risks to the Company, including, but not limited to: (i) the nature and timing of any requirement to lower GHG emissions and adopt more energy-efficient energy use, which could result in changes or disruptions to the way the Company operates, (ii) financial risks where the compliance with such regulations requires unforeseen capital expenditures and becomes costly or financially burdensome, (iii) legal risks associated with the failure to adapt to or comply with future climate change-related regulations, (iv) risks of climate litigation associated with our disclosures and/or operations; (v) risks associated with the implementation of any new technologies required to comply with such regulations, which could impede our ability to develop new products, meet customer and market demand or compete on pricing and quality in the market, and/or (vi) reputational risks associated with our customers’ and investors’ perceptions of the Company and their preferences for maintaining relationships with companies with lower emissions, all of which could harm our reputation in the marketplace.

## Cybersecurity

As filed, 6,671 characters.

### Cybersecurity Risk Management and Strategy

We have developed and implemented an information security and cybersecurity risk management program (“Program”) intended to protect and preserve the confidentiality, integrity and availability of our data and information technology systems. Our Program takes a risk-based approach and is integrated into our overall enterprise risk management program. We use the National Institute of Standards and Technology Cybersecurity Framework (the “NIST CSF”) as a benchmark to align our Program with industry best practices. This does not imply that we meet any particular technical standards, specifications or requirements, but it does mean that we use the NIST CSF as a guide to help us identify, assess and manage cybersecurity risks relevant to our business.

The Company maintains a decentralized information technology infrastructure, where each of our business units utilizes a separate and distinct information technology system. This means that if any business unit’s systems are compromised, there is less risk that another business unit will be impacted by that event. This decentralized structure also allows our information security professionals embedded within an individual business unit to make quick, efficient decisions when changes or actions are needed and provides an additional safeguard for our data and systems.

Our Program includes:

- periodic risk assessments and penetration tests, which are integrated within our enterprise risk management framework processes, designed to identify material cybersecurity and technology threats to our critical systems and information, as well as to formulate management actions to respond to, mitigate and remediate material issues (if any);
- annual management reporting to the Board;
- reporting of the scope, objectives and results of internal audits on the procedures performed to validate the effectiveness of our control environment related to our information security systems and security controls to the Audit Committee at least two times a year;
- annual cybersecurity awareness training of our employees, including incident response personnel and senior management, such as phishing simulation campaigns, to educate employees on recognizing cybersecurity threats and preventing actions that could unintentionally grant unauthorized access to our systems;
- deployment of endpoint protection software, supported by external managed services, to attempt to proactively detect and block malicious code from affecting our systems;
- a cross-functional team principally responsible for managing our cybersecurity risk assessment processes, our security controls and our response to cybersecurity incidents;
- the use of external service providers with subject matter expertise, where appropriate, to assess risk, monitor alerts, perform penetration testing or otherwise assist with aspects of our security controls and response to cybersecurity incidents;
- a documented framework and supporting processes for handling security incidents that facilitates coordination across multiple parts of the Company;
- a cybersecurity incident response process that includes defined escalation criteria that governs when cybersecurity events must be communicated to senior management and, when appropriate, to the Board within established timeframes; and
- evaluations and updates of our cybersecurity controls, investment in security monitoring tools, and enhancements of detection and response capabilities based on emerging threats and periodic assessments.

We have not identified risks from known cybersecurity threats, including as a result of any previous cybersecurity incidents, that have materially affected us to date or are reasonably likely to materially affect us. However, cybersecurity risks could materially affect us in the future, including having a material impact on our business strategy, financial condition and results of operations. We face certain ongoing risks from cybersecurity threats that, if realized, are reasonably likely to materially affect us, including our operations, business strategy, results of operations or financial condition. For a discussion of certain risks related to cybersecurity, refer to the risk factor titled “*Cybersecurity incidents affecting our information technology systems could disrupt business operations or cause the release of highly sensitive confidential or personal information, resulting in adverse impacts to our reputation and operating results and potentially leading to litigation and/or governmental investigations, fines and other penalties”* in Part I, Item 1A. Risk Factors herein.

### Cybersecurity Governance

Our Board maintains oversight responsibility relating to our Program, with assistance from the Audit Committee. At least annually, our management team (including the leaders of our Information Technology and Internal Audit teams) provides an update regarding our Program to the Board. This update provides an overall assessment of the effectiveness of our Program and a review of areas of focus for the upcoming year. The Board also receives periodic reports from our Vice President, Internal Audit, on the audit focus areas and control testing related to our information security systems and security controls, and our management team updates the Board, where it deems appropriate, regarding any significant cybersecurity incidents.

Our management team, including our Executive Vice President and Chief Financial Officer, Executive Vice President and General Counsel, Vice President, Information Technology, and Vice President, Internal Audit, is responsible for assessing and managing our material risks from cybersecurity threats. The team has primary responsibility for our Program and our Vice President, Information Technology, supervises both our internal information security personnel and our retained external cybersecurity consultants. Our management team supervises efforts to prevent, detect, mitigate and remediate cybersecurity risks and incidents through various means, which may include briefings from internal information technology personnel and external consultants engaged by us, as well as alerts and reports produced by security tools deployed in our information technology environment.

Our management team’s experience includes knowledge related to information technology, cybersecurity and incidence response, risk management, control analysis and corporate governance. For additional details about our management team and their experience, refer to the *Executive Leadership* page on the Company’s website at https://www.amphenol.com/governance/leadership.

## Properties

As filed, 1,694 characters.

The Company’s fixed assets include factories and warehouses and a substantial quantity of machinery and equipment. The Company’s factories, warehouses and machinery and equipment are generally in good operating condition, are reasonably maintained and substantially all of its facilities are in regular use. The Company considers the present level of fixed assets along with planned capital expenditures as suitable and adequate for operations in the current business environment. At December 31, 2025, the Company operated approximately 350 manufacturing facilities with approximately 35 million square feet, of which approximately 26 million square feet were leased. Manufacturing facilities located in the U.S. had approximately 6 million square feet, of which approximately 3 million square feet were leased. Manufacturing facilities located outside the U.S. had approximately 29 million square feet, of which approximately 23 million square feet were leased. The square footage by segment related to our manufacturing facilities was approximately 15 million square feet, 10 million square feet and 10 million square feet for the Communications Solutions segment, Harsh Environment Solutions segment and Interconnect and Sensor Systems segment, respectively.

The Company believes that its facilities are suitable and adequate for its business and are being appropriately utilized for their intended purposes. Utilization of the facilities varies based on demand for the relevant products. The Company regularly reviews its anticipated requirements for facilities and, based on that review, may from time to time acquire or lease additional facilities and/or dispose of existing facilities.

## Legal proceedings

As filed, 245 characters.

Information required with respect to legal proceedings in this Part I, Item 3 is included in Note 14 of the Notes to Consolidated Financial Statements contained in Part II, Item 8 of this Annual Report, which is incorporated herein by reference.

## Management's discussion and analysis

As filed, 109,515 characters.

#### (amounts in millions, except share and per share data, unless otherwise noted)

The following discussion and analysis of the financial condition and results of operations for the years ended December 31, 2025, 2024 and 2023 has been derived from and should be read in conjunction with the Consolidated Financial Statements and the accompanying Notes to Consolidated Financial Statements included in Part II, Item 8, herein for Amphenol Corporation (together with its subsidiaries, “Amphenol,” the “Company,” “we,” “our,” or “us”). The Consolidated Financial Statements have been prepared in U.S. dollars, in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP” or “GAAP”). The following discussion and analysis also includes references to certain non-GAAP financial measures, which are defined in the “Non-GAAP Financial Measures” section below, including “Constant Currency Net Sales Growth” and “Organic Net Sales Growth”. For purposes of the following discussion, the terms “constant currencies” and “organically” have the same meaning, respectively, as these aforementioned non-GAAP financial measures. Refer to “Non-GAAP Financial Measures” within this Item 7 for more information, including our reasons for including non-GAAP financial measures and material limitations with respect to the usefulness of the measures.

In addition to historical information, the following discussion and analysis also contains certain forward-looking statements that are subject to risks and uncertainties, including but not limited to the risk factors described in Part I, Item 1A. *Risk Factors* herein, as well as the risks and uncertainties that exist with the use of forward-looking statements as described in the “Cautionary Note Regarding Forward-Looking Statements” section included herein at the beginning of this Annual Report on Form 10-K (“Annual Report”).

### Overview

#### General

Amphenol is one of the world’s largest designers, manufacturers and marketers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products and coaxial, high-speed, fiber optic and specialty cable. In 2025, approximately 65% of the Company’s sales were outside the United States. The primary end markets for our products are:

- information technology and communication devices and systems for the converging technologies of voice, video and data communications;
- a broad range of industrial applications and traditional, hybrid and electric automotive applications; and
- defense and commercial aerospace applications.

The Company’s products are used in a wide variety of applications by a broad array of customers around the world. The Company competes primarily on the basis of technology innovation, product quality and performance, price, customer service and delivery time. For many years, customers have generally been consolidating their lists of qualified suppliers to companies that have the ability to meet certain technical, quality, delivery and other standards while maintaining geographic flexibility and competitive prices. The Company has focused its global resources to position itself to compete effectively in this environment. The Company believes that its global presence is an important competitive advantage, as it allows the Company to provide quality products on a timely and worldwide basis to its multinational customers, while at the same time offering a level of resiliency and diversification against local risks and challenges that may emerge in any single geography.

#### Reportable Business Segments

The Company aligns its businesses into the following three reportable business segments:

- *Communications Solutions –* the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other interconnect products; coaxial, fiber optic, power and high-speed cable; antennas; and other products for use in the information technology and data communications, mobile devices, industrial, communications networks, automotive, commercial aerospace and defense end markets.
- *Harsh Environment Solutions –* the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products for use in the industrial, defense, commercial aerospace, automotive, communications networks and information technology and data communications end markets.
- *Interconnect and Sensor Systems –* the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems used in the automotive, industrial, information technology and data communications, communications networks, defense and commercial aerospace end markets.

This alignment reinforces the Company’s entrepreneurial culture and enables clear accountability of each of our business unit general managers, while enhancing the scalability of Amphenol’s business for the future. For further details related to the Company’s reportable business segments, refer to Note 13 of the Notes to Consolidated Financial Statements herein.

#### Strategy

The Company’s strategy is to provide our customers with comprehensive design capabilities, a broad selection of products and a high level of quality and service on a worldwide basis, while maintaining continuing programs of productivity improvement and cost control. The Company focuses its research and development efforts through close collaboration with its customers to develop highly engineered products that meet customer needs and have the potential for broad market applications and significant sales within a one- to three-year period. The Company is also focused on controlling costs. The Company does this by investing in modern manufacturing technologies, controlling purchasing processes and expanding into lower cost areas.

The Company’s strategic objective is to further enhance its position in its served markets by pursuing the following success factors:

- Pursue broad market diversification;
- Develop high-technology performance-enhancing solutions;
- Expand global presence;
- Control costs;
- Pursue strategic acquisitions and investments; and
- Foster collaborative, entrepreneurial management.

### Pillar Two Framework

The Organization for Economic Co-operation and Development (OECD)/G20 Inclusive Framework, known as Pillar Two, provides guidance for a global minimum tax. This guidance lays out a common approach for adopting the global minimum tax and enacting local legislation codifying the provisions that all 142 countries in the Inclusive Framework agreed to by consensus. The European Union (“EU”) member states have agreed to adopt these rules in two stages. The first component became effective on January 1, 2024, and the second component became effective on January 1, 2025. Non-EU countries have enacted or are expected to enact legislation on a similar timeline. Certain countries in which we operate have already enacted legislation to adopt the Pillar Two framework, while other countries are expected to also implement similar legislation with varying effective dates in the future. When and how this framework is adopted or enacted by the various countries in which we do business will increase tax complexity and may increase uncertainty and adversely affect our provision for income taxes in the U.S. and non-U.S. jurisdictions. The Company reviewed the currently enacted legislation. The implementation did not have a material impact on the

Company’s consolidated financial statements during the year ended December 31, 2025, and it is not currently expected to have a material impact on the Company’s operations, financial condition or cash flows in the future. However, the Company will continue to evaluate the potential impact of Pillar Two on the Company and its results as additional countries adopt legislation and issue individual guidance on their enacted legislation.

### Results of Operations

### 2025 Compared to 2024

Net sales were $23,094.7 for the year ended December 31, 2025 compared to $15,222.7 for the year ended December 31, 2024, representing an increase of 52% in U.S. dollars, 51% in constant currencies and 38% organically (excluding both currency and acquisition impacts; unless otherwise indicated, organic net sales growth is primarily driven by higher sales volumes), compared to the prior year. The increase in net sales in 2025 was driven by robust organic growth in the Communications Solutions segment and strong organic growth in the Harsh Environment Solutions segment and Interconnect and Sensor Systems segment, along with contributions from the Company’s acquisition program, all as described below. From an end market standpoint, the increase in net sales was driven by robust organic growth in the information technology and data communications (“IT datacom”) market, strong organic growth in the defense, industrial, communications networks and commercial aerospace markets and moderate organic growth in the automotive and mobile devices markets, along with contributions from the Company’s acquisition program. Net sales to the IT datacom market increased approximately $4,593.7, as we experienced robust growth across a broad array of applications, in particular the continued acceleration in and strong demand for products used in next-generation AI-related applications, along with growth in networking equipment, servers, cloud storage and peripherals. Net sales to the communications networks market increased approximately $1,374.3, driven primarily by contributions from acquisitions, in particular the acquisition of Andrew (as defined and discussed below within this Item 7 and in Note 11 of the accompanying Notes to Consolidated Financial Statements herein), along with organic growth in demand from mobile network operators and wireless equipment manufacturers. Net sales to the industrial market increased approximately $770.0, primarily driven by contributions from acquisitions, along with growth in medical applications, instrumentation, alternative energy and other industrial equipment. Net sales to the defense market increased approximately $499.2, driven by broad-based strength across virtually all defense applications, particularly related to communications, ground vehicles, space, missiles and naval, as well as contributions from acquisitions. Net sales to the commercial aerospace market increased approximately $322.2, primarily due to contributions from acquisitions, in particular the CIT acquisition, along with broad-based strength in demand from nearly all commercial aircraft manufacturers across a broad range of platforms. Net sales to the automotive market increased approximately $248.3, reflecting strength in demand from both electric and hybrid drive train platforms, antenna and related assemblies, and infotainment communications. Net sales to the mobile devices market increased approximately $64.3, driven by growth in sales in handsets, wearable devices, laptops and tablets.

Net sales in the Communications Solutions segment (approximately 52% of net sales) increased 91% in both U.S. dollars and constant currencies, as well as 71% organically, in 2025, compared to 2024. The sales growth in 2025 was primarily driven by robust organic growth in the IT datacom market, with particular strength in AI-related applications, as well as strong organic growth in the automotive, communications networks and industrial markets and moderate organic growth in the mobile devices market, along with contributions from acquisitions.

Net sales in the Harsh Environment Solutions segment (approximately 26% of net sales) increased 33% in U.S. dollars, 32% in constant currencies and 17% organically, in 2025, compared to 2024. The sales growth in 2025 was primarily driven by strong organic growth in the defense, industrial, commercial aerospace and IT datacom markets, along with contributions from acquisitions.

Net sales in the Interconnect and Sensor Systems segment (approximately 22% of net sales) increased 15% in U.S. dollars, 14% in constant currencies and 13% organically, in 2025, compared to 2024. The sales growth in 2025 was primarily driven by robust organic growth in the IT datacom market, with particular strength in AI-related applications and moderate organic growth in the automotive market.

The table below reconciles Constant Currency Net Sales Growth and Organic Net Sales Growth to the most directly comparable U.S. GAAP financial measures, by segment, geography and consolidated, for the year ended December 31, 2025 compared to the year ended December 31, 2024:

| ​ ​ ​ ​ ​ ​ Net sales by: Segment: | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2025 ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ 2024 ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ | ​ ​ Percentage Growth (relative to prior year) (1) ​ ​ Net sales growth in U.S. Dollars (2) (GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Foreign currency impact (3) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Constant Currency Net Sales Growth (4) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ Acquisition impact (5) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Organic Net Sales Growth (4) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ |
| --- | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- |
| Communications Solutions | ​ | $12,056.0 | ​ | $6,323.8 | ​ | 91% | ​ | —% | ​ | 91% | ​ | 20% | ​ | 71% | ​ |
| Harsh Environment Solutions | ​ | ​ 5,881.7 |  | ​ 4,417.4 | ​ | 33% | ​ | 1% | ​ | 32% | ​ | 15% | ​ | 17% | ​ |
| Interconnect and Sensor Systems | ​ | 5,157.0 | ​ | 4,481.5 | ​ | 15% | ​ | 1% | ​ | 14% | ​ | 1% | ​ | 13% | ​ |
| Consolidated | ​ | $23,094.7 | ​ | $15,222.7 | ​ | 52% | ​ | 1% | ​ | 51% | ​ | 13% | ​ | 38% | ​ |
| ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |
| Geography (6): |  | ​ ​ | ​ | ​ ​ |  | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |
| United States | ​ | $7,987.7 |  | $5,272.3 | ​ | 52% | ​ | —% | ​ | 51% | ​ | 25% | ​ | 26% | ​ |
| Foreign | ​ | 15,107.0 | ​ | 9,950.4 | ​ | 52% | ​ | 1% | ​ | 51% | ​ | 7% | ​ | 44% | ​ |
| Consolidated | ​ | $23,094.7 | ​ | $15,222.7 | ​ | 52% | ​ | 1% | ​ | 51% | ​ | 13% | ​ | 38% | ​ |
| ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |

(1) Percentages in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

(2) Net sales growth in U.S. dollars is calculated based on Net sales as reported in the Consolidated Statements of Income and Note 13 of the Notes to Consolidated Financial Statements. While the term “net sales growth in U.S. dollars” is not considered a U.S. GAAP financial measure, for purposes of this table, we derive the reported (GAAP) measure based on GAAP results, which serves as the basis for the reconciliation to its comparable non-GAAP financial measures.

(3) Foreign currency translation impact, a non-GAAP measure, represents the percentage impact on net sales resulting from foreign currency exchange rate changes in the current reporting year compared to the prior reporting year. Such amount is calculated by subtracting current year net sales translated at average foreign currency exchange rates for the prior year from current year net sales, taken as a percentage of the prior year’s net sales.

(4) Constant Currency Net Sales Growth and Organic Net Sales Growth are non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section of this Item 7.

(5) Acquisition impact, a non-GAAP measure, represents the percentage impact on net sales resulting from acquisitions that have not been included in the Company’s consolidated results for the full current year and/or prior comparable year presented. Such net sales related to these acquisitions do not reflect the underlying growth of the Company on a comparative basis. Acquisition impact is calculated as a percentage of the respective prior year period(s) net sales.

(6) Net sales by geographic area are based on the customer location to which the product is shipped.

The increase in foreign net sales in 2025 compared to 2024 was primarily driven by robust sales growth in Asia. The comparatively weaker U.S. dollar in 2025 had the effect of increasing sales by approximately $84.6, compared to 2024.

The following table sets forth the components of net income attributable to Amphenol Corporation as a percentage of net sales for the years indicated.

| ​ ​ ​ | ​ ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2025 ​ ​ ​ | ​ ​ 2024 ​ ​ ​ | ​ ​ 2023 |
| --- | --- | ---: | ---: | ---: |
| Net sales |  | 100.0% | 100.0% | 100.0% |
| Operating expenses (1) |  | 74.1 ​ | 78.4 ​ | 79.3 ​ |
| Acquisition-related expenses | ​ | 0.4 ​ | 0.8 ​ | 0.3 ​ |
| Operating income |  | 25.4 ​ | 20.7 ​ | 20.4 ​ |
| Interest expense |  | (1.6) ​ | (1.4) ​ | (1.1) ​ |
| Gain on bargain purchase acquisition |  | — ​ | — ​ | — ​ |
| Other income (expense), net |  | 0.4 ​ | 0.5 ​ | 0.2 ​ |
| Income before income taxes | ​ | 24.3 ​ | 19.8 ​ | 19.6 ​ |
| Provision for income taxes |  | (5.6) ​ | (3.7) ​ | (4.1) ​ |
| Net income |  | 18.6 ​ | 16.0 ​ | 15.5 ​ |
| Net income attributable to noncontrolling interests |  | (0.2) ​ | (0.1) ​ | (0.1) ​ |
| Net income attributable to Amphenol Corporation |  | 18.5% | 15.9% | 15.4% |

(1) The aggregated amount is comprised of cost of sales and selling, general and administrative expenses.

Note: Percentages in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

Operating expenses were $17,122.7, or 74.1% of net sales, for 2025, compared to $11,938.4, or 78.4% of net sales, for 2024. Operating income was $5,868.6, or 25.4% of net sales, in 2025, compared to $3,156.9, or 20.7% of net sales, in 2024. The decrease in Operating expenses as a percentage of net sales and increase in Operating income as a percentage of net sales in 2025 were primarily driven by strong performance and disciplined cost control, which generated strong operating leverage on the significant growth experienced during the period, partially offset by the effect of acquisitions, which currently have higher Operating expenses as a percentage of net sales compared to the Company average. Operating income in 2025 included acquisition-related expenses of $181.2, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the Andrew and Trexon acquisitions and external transaction costs associated with acquisitions (such acquisition-related expenses aggregating $103.4 are presented separately in the Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $77.8 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Consolidated Statements of Income). Operating income in 2024 included acquisition-related expenses of $145.6, comprised primarily of (i) external transaction costs associated with acquisitions and the non-cash amortization related to the value associated with acquired backlog resulting from the CIT acquisition (such acquisition-related expenses aggregating $127.4 are presented separately in the Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $18.2 associated with the CIT acquisition (such costs are recorded in Cost of sales in the Consolidated Statements of Income). The acquisition-related expenses in 2025 and 2024 had the effect of decreasing net income by $148.8, or $0.12 per share, and $119.3, or $0.09 per share, respectively. Excluding the effect of these acquisition-related expenses, Adjusted Operating Income and Adjusted Operating Margin, each as defined below in the “Non-GAAP Financial Measures” section within this Item 7, were $6,049.8 and 26.2% of net sales, respectively, in 2025, and $3,302.5 and 21.7% of net sales, respectively, in 2024. The increase in Adjusted Operating Income and Adjusted Operating Margin in 2025 relative to 2024 was primarily driven by strong operating performance on the higher sales volumes, partially offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Communications Solutions segment in 2025 was $3,746.6, or 31.1% of net sales, compared to $1,569.6, or 24.8% of net sales in 2024. The increase in operating margin for the Communications Solutions segment for 2025 compared to 2024 was primarily driven by strong operating performance on the significantly higher sales volumes, slightly offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Harsh Environment Solutions segment in 2025 was $1,541.4, or 26.2% of net sales, compared to $1,093.2, or 24.7% of net sales in 2024. The increase in operating margin for the Harsh Environment Solutions segment for 2025 compared to 2024 was primarily driven by strong operating performance on the higher organic sales volumes, slightly offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Interconnect and Sensor Systems segment in 2025 was $1,005.1, or 19.5% of net sales, compared to $825.9, or 18.4% of net sales in 2024. The increase in operating margin for the Interconnect and Sensor Systems segment for 2025 compared to 2024 was primarily driven by strong operating performance on the higher sales volumes.

Interest expense was $367.8 in 2025 compared to $217.0 in 2024. The increase in interest expense was primarily driven by higher average borrowing levels, resulting from the issuances of new senior notes during 2025 to fund all or part of acquisitions, including the CommScope acquisition (as defined and discussed below within this Item 7 and in Note 15 of the accompanying Notes to Consolidated Financial Statements herein), which closed on January 9, 2026. Refer to Note 4 of the Notes to Consolidated Financial Statements for further information related to the Company’s debt.

Other income (expense), net was $99.9 in 2025 compared to $72.0 in 2024. The increase was primarily driven by interest income earned on cash and cash equivalents on hand, resulting from increased levels of cash on hand, partially driven by the issuance of the November Senior Notes (defined below) in the fourth quarter of 2025 in anticipation of the CommScope acquisition, along with increased interest rates.

Provision for income taxes was at an effective rate of 23.1% in 2025 and 18.9% in 2024. Provision for income taxes in 2025 included (i) excess tax benefits of $246.6 from stock option exercises, (ii) a discrete tax item of $100.0 related to a charge recorded for notices received by certain subsidiaries in China from relevant tax authorities challenging certain of the Company’s tax positions taken over up to an eight-year period, and (iii) the tax effects of the aforementioned acquisition-related expenses during the year. Provision for income taxes in 2024 included (i) excess tax benefits of $142.6 from stock option exercises, (ii) a discrete tax benefit related to the settlement of tax audits and associated lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position, and (iii) the tax effects of the aforementioned acquisition-related expenses during the year. These items incurred in 2025 and 2024 had the aggregate effect of decreasing the effective tax rate and increasing earnings per share by the amounts noted in the table below. Excluding the effect of these items, the Adjusted Effective Tax Rate, a non-GAAP financial measure as defined in the “Non-GAAP Financial Measures” section below within this Item 7, was 25.5% for 2025 and 24.0% for 2024, as reconciled in the table below to the comparable effective tax rate based on GAAP results. For additional details related to the reconciliation between the U.S. statutory federal tax rate and the Company’s effective tax rate for these years, refer to Note 6 of the Notes to Consolidated Financial Statements.

Net income attributable to Amphenol Corporation and Net income attributable to Amphenol Corporation per common share - Diluted (“Diluted EPS”) were $4,270.3 and $3.34, respectively, for 2025, compared to $2,424.0 and $1.92, respectively, for 2024. Excluding the effect of the items listed in the table below, Adjusted Net Income attributable to Amphenol Corporation and Adjusted Diluted EPS, non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section below within this Item 7, were $4,272.5 and $3.34, respectively, for 2025, compared to $2,382.1 and $1.89, respectively, for 2024.

The following table reconciles Adjusted Operating Income, Adjusted Operating Margin, Adjusted Net Income attributable to Amphenol Corporation, Adjusted Effective Tax Rate and Adjusted Diluted EPS (each as defined in the “Non-GAAP Financial Measures” section below) to the most directly comparable U.S. GAAP financial measures for the years ended December 31, 2025 and 2024:

| ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ | ​ ​ 2025 ​ ​ ​ ​ Operating Income | ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ Operating ​ Margin (1) ​ ​ | ​ ​ Net Income attributable to Amphenol Corporation | ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Effective ​ Tax ​ Rate (1) ​ | ​ ​ ​ ​ ​ ​ Diluted EPS | ​ ​ ​ ​ ​ ​ ​ | ​ ​ 2024 ​ ​ ​ ​ Operating Income | ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ Operating ​ Margin (1) ​ ​ ​ | ​ ​ Net Income attributable to Amphenol Corporation | ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Effective ​ Tax ​ Rate (1) ​ | ​ ​ ​ ​ ​ ​ Diluted EPS |
| --- | --- | --- | --- | ---: | --- | --- | ---: | --- | --- | --- | --- | ---: | --- | --- | ---: | --- |
| Reported (GAAP) | ​ | $5,868.6 |  | 25.4% | $4,270.3 | ​ | 23.1% | $3.34 | ​ | $3,156.9 |  | 20.7% | $2,424.0 | ​ | 18.9% | $1.92 |
| Amortization of acquisition-related inventory step-up costs | ​ | ​ 77.8 | ​ | 0.3 ​ | ​ 59.6 | ​ | — ​ | ​ 0.05 | ​ | ​ 18.2 | ​ | 0.1 ​ | ​ 14.0 | ​ | — ​ | ​ 0.01 |
| Acquisition-related expenses | ​ | ​ 103.4 | ​ | 0.4 ​ | ​ 89.2 | ​ | (0.2) ​ | ​ 0.07 | ​ | ​ 127.4 | ​ | 0.8 ​ | ​ 105.3 | ​ | (0.3) ​ | ​ 0.08 |
| Excess tax benefits related to stock-based compensation | ​ | ​ — | ​ | — ​ | ​ (246.6) | ​ | 4.4 ​ | ​ (0.19) | ​ | ​ — | ​ | — ​ | ​ (142.6) | ​ | 4.7 ​ | ​ (0.11) |
| Discrete tax items | ​ | ​ — | ​ | — ​ | ​ 100.0 | ​ | (1.8) ​ | ​ 0.08 | ​ | ​ — | ​ | — ​ | ​ (18.6) | ​ | 0.6 ​ | ​ (0.01) |
| Adjusted (non-GAAP) (2) | ​ | $6,049.8 | ​ | 26.2% | $4,272.5 | ​ | 25.5% | $3.34 | ​ | $3,302.5 | ​ | 21.7% | $2,382.1 | ​ | 24.0% | $1.89 |

(1) While the terms “operating margin” and “effective tax rate” are not considered U.S. GAAP financial measures, for purposes of this table, we derive the reported (GAAP) measures based on GAAP results, which serve as the basis for the reconciliation to their comparable non-GAAP financial measures.

(2) All percentages and per share amounts in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

### 2024 Compared to 2023

Net sales were $15,222.7 for the year ended December 31, 2024 compared to $12,554.7 for the year ended December 31, 2023, representing an increase of 21% in both U.S. dollars and constant currencies, as well as 13% organically (excluding both currency and acquisition impacts; unless otherwise indicated, organic net sales growth is primarily driven by higher sales volumes), compared to the prior year. The increase in net sales in 2024 was driven by strong organic growth in the Communications Solutions segment and moderate organic growth in the Interconnect and Sensor Systems segment and Harsh Environment Solutions segment, along with contributions from the Company’s acquisition program, all as described below. From an end market standpoint, the increase in net sales was driven by strong organic growth in the IT datacom, mobile devices, commercial aerospace and defense markets and moderate organic growth in the automotive market, along with contributions from the Company’s acquisition program, partially offset by organic declines in the industrial and communications networks markets. Net sales to the IT datacom market increased approximately $1,334.2, as we experienced strong growth across a broad array of applications, in particular the continued acceleration in and strong demand for products used in next-generation AI-related applications, along with growth in servers, networking equipment, cloud storage, and consumer electronics. Net sales to the industrial market increased approximately $452.1, primarily driven by contributions from acquisitions, along with growth in mass transit, battery and electric heavy vehicles, alternative energy, instrumentation and medical applications, which were partially offset by moderations in factory and building automation, transportation, oil and gas, marine and heavy equipment applications. Net sales to the commercial aerospace market increased approximately $382.9, primarily due to contributions from acquisitions, in particular the CIT acquisition, along with broad-based strength in demand from nearly all commercial aircraft manufacturers across a broad range of platforms. Net sales to the defense market increased approximately $214.0, driven by broad-based strength across nearly all defense applications, particularly space-related, avionics, communications, airframe, and ground vehicle applications, as well as contributions from acquisitions. Net sales to the automotive market increased approximately $168.3, reflecting strength in demand from power management, infotainment communications, safety and security systems and antenna and related assemblies, along with contributions from acquisitions, partially offset by moderations in electric and hybrid drive train platforms. Net sales to the mobile devices market increased approximately $131.5, driven by growth in sales in most mobile device applications, including smartphones, laptops, and wearable and hearable devices, partially offset by a moderation in tablets. Net sales to the communications networks market decreased approximately $15.0, driven by moderations in demand from service operators.

Net sales in the Communications Solutions segment (approximately 42% of net sales) increased 29% in both U.S. dollars and constant currencies, as well as 27% organically, in 2024, compared to 2023. The sales growth in 2024 was primarily driven by strong organic growth in the IT datacom, automotive, mobile devices and industrial markets, along with modest contributions from the Company’s acquisition program, partially offset by an organic decline in the communications networks market.

Net sales in the Harsh Environment Solutions segment (approximately 29% of net sales) increased 25% in both U.S. dollars and constant currencies, as well as 4% organically, in 2024, compared to 2023. The sales growth in 2024 was primarily driven by contributions from the Company’s acquisition program, in particular the CIT acquisition, along with strong organic growth in the defense, commercial aerospace and IT datacom markets, partially offset by organic declines in the automotive and industrial markets.

Net sales in the Interconnect and Sensor Systems segment (approximately 29% of net sales) increased 9% in both U.S. dollars and constant currencies, as well as 4% organically, in 2024, compared to 2023. The sales growth in 2024 was primarily driven by contributions from the Company’s acquisition program, along with strong organic growth in the IT datacom market and moderate growth in the automotive market, partially offset by organic declines in the industrial and defense markets.

The table below reconciles Constant Currency Net Sales Growth and Organic Net Sales Growth to the most directly comparable U.S. GAAP financial measures, by segment, geography and consolidated, for the year ended December 31, 2024 compared to the year ended December 31, 2023:

| ​ ​ ​ ​ ​ ​ Net sales by: Segment: | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2024 ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ 2023 ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ | ​ ​ Percentage Growth (relative to prior year) (1) ​ ​ Net sales growth in U.S. Dollars (2) (GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Foreign currency impact (3) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Constant Currency Net Sales Growth (4) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ Acquisition impact (5) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Organic Net Sales Growth (4) (non-GAAP) ​ ​ | ​ ​ ​ ​ ​ ​ ​ ​ |
| --- | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- |
| Communications Solutions | ​ | $6,323.8 | ​ | $4,912.8 | ​ | 29% | ​ | —% | ​ | 29% | ​ | 2% | ​ | 27% | ​ |
| Harsh Environment Solutions | ​ | ​ 4,417.4 |  | ​ 3,530.8 | ​ | 25% | ​ | —% | ​ | 25% | ​ | 21% | ​ | 4% | ​ |
| Interconnect and Sensor Systems | ​ | 4,481.5 | ​ | 4,111.1 | ​ | 9% | ​ | —% | ​ | 9% | ​ | 5% | ​ | 4% | ​ |
| Consolidated | ​ | $15,222.7 | ​ | $12,554.7 | ​ | 21% | ​ | —% | ​ | 21% | ​ | 8% | ​ | 13% | ​ |
| ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |
| Geography (6): |  | ​ ​ | ​ | ​ ​ |  | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |
| United States | ​ | $5,272.3 |  | $4,405.4 | ​ | 20% | ​ | —% | ​ | 20% | ​ | 16% | ​ | 3% | ​ |
| Foreign | ​ | 9,950.4 | ​ | 8,149.3 | ​ | 22% | ​ | —% | ​ | 23% | ​ | 4% | ​ | 19% | ​ |
| Consolidated | ​ | $15,222.7 | ​ | $12,554.7 | ​ | 21% | ​ | —% | ​ | 21% | ​ | 8% | ​ | 13% | ​ |
| ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ | ​ ​ | ​ |

(1) Percentages in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

(2) Net sales growth in U.S. dollars is calculated based on Net sales as reported in the Consolidated Statements of Income and Note 13 of the Notes to Consolidated Financial Statements. While the term “net sales growth in U.S. dollars” is not considered a U.S. GAAP financial measure, for purposes of this table, we derive the reported (GAAP) measure based on GAAP results, which serves as the basis for the reconciliation to its comparable non-GAAP financial measures.

(3) Foreign currency translation impact, a non-GAAP measure, represents the percentage impact on net sales resulting from foreign currency exchange rate changes in the current reporting year compared to the prior reporting year. Such amount is calculated by subtracting current year net sales translated at average foreign currency exchange rates for the prior year from current year net sales, taken as a percentage of the prior year’s net sales.

(4) Constant Currency Net Sales Growth and Organic Net Sales Growth are non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section of this Item 7.

(5) Acquisition impact, a non-GAAP measure, represents the percentage impact on net sales resulting from acquisitions that have not been included in the Company’s consolidated results for the full current year and/or prior comparable year presented. Such net sales related to these acquisitions do not reflect the underlying growth of the Company on a comparative basis. Acquisition impact is calculated as a percentage of the respective prior year period(s) net sales.

(6) Net sales by geographic area are based on the customer location to which the product is shipped.

The increase in foreign net sales in 2024 compared to 2023 was primarily driven by robust sales growth in Asia. The comparatively stronger U.S. dollar in 2024 had the effect of decreasing sales by approximately $39.6, compared to 2023.

Operating expenses were $11,938.4, or 78.4% of net sales, for 2024, compared to $9,960.5, or 79.3% of net sales, for 2023. Operating income was $3,156.9, or 20.7% of net sales, in 2024, compared to $2,559.6, or 20.4% of net sales, in 2023. The decrease in Operating expenses as a percentage of net sales and increase in Operating income as a percentage of net sales in 2024 were primarily driven by strong performance and disciplined cost control, which generated strong operating leverage on the significant growth experienced, partially offset by the effect of acquisitions, which currently have higher Operating expenses as a percentage of net sales compared to the Company average. Operating income in 2024 included acquisition-related expenses of $145.6, comprised primarily of (i) external transaction costs associated with acquisitions and the non-cash amortization related to the value associated with acquired backlog resulting from the CIT acquisition (such acquisition-related expenses aggregating $127.4 are presented separately in the Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $18.2 associated with the CIT acquisition (such costs are recorded in Cost of sales in the Consolidated Statements of Income). Operating income in 2023 included acquisition-related expenses of $34.6, comprised primarily of external transaction costs, as well as the non-cash amortization related to the value associated with acquired backlog resulting from three of the acquisitions that closed in 2023. Acquisition-related expenses in 2023 are presented separately in the Consolidated Statements of Income. The acquisition-related expenses in 2024 and 2023 had the effect of decreasing net income by $119.3, or $0.09 per share, and $30.2, or $0.02 per share, respectively. Excluding the effect of these acquisition-related expenses, Adjusted Operating Income and Adjusted Operating Margin, each as defined below in the “Non-GAAP Financial Measures” section within this Item 7, were $3,302.5 and 21.7% of net sales, respectively, in 2024, and $2,594.2 and 20.7% of net sales, respectively, in 2023. The increase in Adjusted Operating Income and Adjusted Operating Margin in 2024 relative to 2023 was primarily driven by strong operating performance on the higher sales volumes, partially offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Operating income for the Communications Solutions segment in 2024 was $1,569.6, or 24.8% of net sales, compared to $1,063.5, or 21.6% of net sales in 2023. The increase in operating margin for the Communications Solutions segment for 2024 compared to 2023 was primarily driven by strong operating performance on the higher sales volumes.

Operating income for the Harsh Environment Solutions segment in 2024 was $1,093.2, or 24.7% of net sales, compared to $943.9, or 26.7% of net sales in 2023. The decrease in operating margin for the Harsh Environment Solutions segment for 2024 compared to 2023 was primarily driven by the negative impact on operating margin related to acquisitions completed within the prior 12 months, particularly the CIT acquisition, that are currently operating below the average operating margin of the Company.

Operating income for the Interconnect and Sensor Systems segment in 2024 was $825.9, or 18.4% of net sales, compared to $753.7, or 18.3% of net sales in 2023. The modest increase in operating margin for the Interconnect and Sensor Systems segment for 2024 compared to 2023 was primarily driven by strong operating performance on the higher sales volumes, partially offset by the negative impact on operating margin related to acquisitions completed within the prior 12 months that are currently operating below the average operating margin of the Company.

Interest expense was $217.0 in 2024 compared to $139.5 in 2023. The increase in interest expense was primarily driven by higher average borrowing levels, resulting from the issuances of new senior notes during 2024. Refer to Note 4 of the Notes to Consolidated Financial Statements for further information related to the Company’s debt.

Other income (expense), net was $72.0 in 2024 compared to $29.3 in 2023. The increase was primarily driven by interest income earned on cash and cash equivalents on hand, resulting from increased levels of cash on hand partially driven by the issuance of the new October Senior Notes (defined below) in the fourth quarter of 2024 in anticipation of the Andrew acquisition, which closed on January 31, 2025, along with increased interest rates.

Provision for income taxes was at an effective rate of 18.9% in 2024 and 20.7% in 2023. Provision for income taxes in 2024 included (i) excess tax benefits of $142.6 from stock option exercises, (ii) a discrete tax benefit related to the settlement of tax audits and associated lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position, and (iii) the tax effects related to the aforementioned acquisition-related expenses during the year. Provision for income taxes in 2023 included (i) excess tax benefits of $82.4 from stock option exercises, (ii) the effect of the gain from the bargain purchase acquisition that closed in the second quarter of 2023, and (iii) the tax effects related to acquisition-related expenses during the year. These items incurred in 2024 and 2023 had the aggregate effect of decreasing the effective tax rate and increasing earnings per share by the amounts noted in the table below. Excluding the effect of these items, the Adjusted Effective Tax Rate, a non-GAAP financial measure as defined in the “Non-GAAP Financial Measures” section below within this Item 7, was 24.0% for both 2024 and 2023, as reconciled in the table below to the comparable effective tax rate based on GAAP results. For additional details related to the reconciliation between the U.S. statutory federal tax rate and the Company’s effective tax rate for these years, refer to Note 6 of the Notes to Consolidated Financial Statements.

Net income attributable to Amphenol Corporation and Diluted EPS were $2,424.0 and $1.92, respectively, for 2024, compared to $1,928.0 and $1.55, respectively, for 2023. Excluding the effect of the items listed in the table below, Adjusted Net Income attributable to Amphenol Corporation and Adjusted Diluted EPS, non-GAAP financial measures as defined in the “Non-GAAP Financial Measures” section below within this Item 7, were $2,382.1 and $1.89, respectively, for 2024, compared to $1,870.4 and $1.51, respectively, for 2023.

The following table reconciles Adjusted Operating Income, Adjusted Operating Margin, Adjusted Net Income attributable to Amphenol Corporation, Adjusted Effective Tax Rate and Adjusted Diluted EPS (each as defined in the “Non-GAAP Financial Measures” section below) to the most directly comparable U.S. GAAP financial measures for the years ended December 31, 2024 and 2023:

| ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ | ​ ​ 2024 ​ ​ ​ ​ Operating Income | ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ Operating ​ Margin (1) ​ ​ | ​ ​ Net Income attributable to Amphenol Corporation | ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Effective ​ Tax ​ Rate (1) ​ | ​ ​ ​ ​ ​ ​ Diluted EPS | ​ ​ ​ ​ ​ ​ ​ | ​ ​ 2023 ​ ​ ​ ​ Operating Income | ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ ​ Operating ​ Margin (1) ​ ​ ​ | ​ ​ Net Income attributable to Amphenol Corporation | ​ ​ ​ ​ ​ ​ | ​ ​ ​ ​ Effective ​ Tax ​ Rate (1) ​ | ​ ​ ​ ​ ​ ​ Diluted EPS |
| --- | --- | --- | --- | ---: | --- | --- | ---: | --- | --- | --- | --- | ---: | --- | --- | ---: | --- |
| Reported (GAAP) | ​ | $3,156.9 |  | 20.7% | $2,424.0 | ​ | 18.9% | $1.92 | ​ | $2,559.6 |  | 20.4% | $1,928.0 | ​ | 20.7% | $1.55 |
| Amortization of acquisition-related inventory step-up costs | ​ | ​ 18.2 | ​ | 0.1 ​ | ​ 14.0 | ​ | — ​ | ​ 0.01 | ​ | ​ — | ​ | — ​ | ​ — | ​ | — ​ | ​ — |
| Acquisition-related expenses | ​ | ​ 127.4 | ​ | 0.8 ​ | ​ 105.3 | ​ | (0.3) ​ | ​ 0.08 | ​ | ​ 34.6 | ​ | 0.3 ​ | ​ 30.2 | ​ | (0.2) ​ | ​ 0.02 |
| Gain on bargain purchase acquisition | ​ | ​ — | ​ | — ​ | ​ — | ​ | — ​ | ​ — | ​ | ​ — | ​ | — ​ | ​ (5.4) | ​ | 0.1 ​ | ​ — |
| Excess tax benefits related to stock-based compensation | ​ | ​ — | ​ | — ​ | ​ (142.6) | ​ | 4.7 ​ | ​ (0.11) | ​ | ​ — | ​ | — ​ | ​ (82.4) | ​ | 3.4 ​ | ​ (0.07) |
| Discrete tax items | ​ | ​ — | ​ | — ​ | ​ (18.6) | ​ | 0.6 ​ | ​ (0.01) | ​ | ​ — | ​ | — ​ | ​ — | ​ | — ​ | ​ — |
| Adjusted (non-GAAP) (2) | ​ | $3,302.5 | ​ | 21.7% | $2,382.1 | ​ | 24.0% | $1.89 | ​ | $2,594.2 | ​ | 20.7% | $1,870.4 | ​ | 24.0% | $1.51 |

(1) While the terms “operating margin” and “effective tax rate” are not considered U.S. GAAP financial measures, for purposes of this table, we derive the reported (GAAP) measures based on GAAP results, which serve as the basis for the reconciliation to their comparable non-GAAP financial measures.

(2) All percentages and per share amounts in this table were calculated using actual, unrounded results; therefore, the sum of the components may not add due to rounding.

### Liquidity and Capital Resources

#### Liquidity and Cash Requirements

At December 31, 2025 and 2024, the Company had cash, cash equivalents and short-term investments of $11,434.2 and $3,335.4, respectively. As of December 31, 2025, more than half of the Company’s cash, cash equivalents and short-term investments on hand was located in the United States, primarily as a result of the proceeds from the issuance of the November Senior Notes in 2025. As of December 31, 2024, more than half of the Company’s cash, cash equivalents and short-term investments on hand was located in the United States, primarily as a result of the proceeds from the issuance of the October Senior Notes in 2024. As of January 9, 2026, the Company used approximately $7,400 of its cash on hand to fund the CommScope acquisition, as discussed elsewhere within this Item 7 and in Note 15 of the accompanying Notes to Consolidated Financial Statements herein. The Company’s primary sources of liquidity are internally generated cash provided by operating activities, our cash, cash equivalents and short-term investments on hand, as well as availability under the Commercial Paper Programs, the Revolving Credit Facility and, as of December 31, 2025 but not as of the date of this Annual Report, the Delayed Draw Term Loans (all as defined below). The Company believes that these sources of liquidity, along with access to capital markets (which the Company accessed in 2025 and 2024 for various debt issuances), provide adequate liquidity to meet both its short-term (next 12 months) and reasonably foreseeable long-term requirements and obligations. The Company’s debt instruments are defined and discussed in more detail below within this Item 7.

#### Cash Requirements from Known Contractual and Other Obligations

The Company’s primary ongoing cash requirements will be for operating and working capital needs, capital expenditures, product development activities, repurchases of our Common Stock, dividends, debt service, taxes due upon the repatriation of foreign earnings (which will be payable upon the repatriation of such earnings), funding of pension obligations, funding of acquisitions, and other contractual obligations and commitments (refer to the table below for the Company’s material cash requirements from known contractual and other obligations). The Company has funded all of its recent acquisitions entirely with a combination of cash on hand and net proceeds from its debt instruments, including the Andrew and Trexon acquisitions in 2025 and the CommScope acquisition in 2026, and may fund future acquisitions all or in part with cash. Capital expenditures have historically been in the range of 3% to 4% of net sales. The Company’s debt service requirements primarily consist of principal and interest on the Company’s Senior Notes, and to the extent of any amounts outstanding, the Revolving Credit Facility, Commercial Paper Programs and Delayed Draw Term Loans (all as defined below). As of December 31, 2025 and 2024, the Company had no borrowings outstanding under the Revolving Credit Facility, Commercial Paper Programs and Delayed Draw Term Loans. However, the Company borrowed $1,534.1 under each of the Delayed Draw Term Loans in January 2026 to fund a portion of the consideration for the CommScope acquisition. In addition, the Company borrowed under the U.S. Commercial Paper Program during 2025 from time to time, the proceeds of which were used for general corporate purposes, including, but not limited to, partially funding the Andrew acquisition, as discussed later within this Item 7. The Company may make additional borrowings under the Revolving Credit Facility and Commercial Paper Programs from time to time in the future.

The following table summarizes the Company’s material short- and long-term cash requirements from known obligations pursuant to certain contracts and commitments as of December 31, 2025, as well as an estimate of the timing in which such obligations and payments are expected to be satisfied.

*(dollars in millions)*

| ​ ​ Contractual Obligations | ​ ​ ​ ​ | ​ ​ Payment Due By Period ​ ​ Total | ​ ​ ​ ​ ​ | ​ ​ Less than 1 year | ​ ​ ​ ​ ​ | ​ ​ 1-3 years | ​ ​ ​ ​ ​ | ​ ​ 3-5 years | ​ ​ ​ ​ ​ | ​ ​ More than 5 years | ​ |
| --- | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- | ---: | --- |
| Debt (1) | ​ | $15,601.9 | ​ | $937.2 | ​ | $4,035.5 | ​ | $2,848.3 | ​ | $7,780.9 | ​ |
| Interest related to senior notes (2) | ​ | 6,283.1 | ​ | 601.5 | ​ | 1,122.1 | ​ | 844.2 | ​ | 3,715.3 | ​ |
| Operating leases (3) | ​ | 649.3 | ​ | 161.4 | ​ | 227.4 | ​ | 121.8 | ​ | 138.7 | ​ |
| Purchase obligations (4) | ​ | 2,083.2 | ​ | 2,006.9 | ​ | 72.1 | ​ | 3.9 | ​ | 0.3 | ​ |
| Accrued pension and postretirement benefit obligations (5) | ​ | 53.0 | ​ | 5.6 | ​ | 9.8 | ​ | 10.8 | ​ | 26.8 | ​ |
| Total (6) | ​ | $24,670.5 | ​ | $3,712.6 | ​ | $5,466.9 | ​ | $3,829.0 | ​ | $11,662.0 | ​ |

(1) The Company has excluded expected interest payments on the Revolving Credit Facility, Commercial Paper Program and Euro Commercial Paper Program from the above table, as this calculation is largely dependent on average debt levels during each of the years presented. The actual interest payments made related to the Company’s Revolving Credit Facility and Commercial Paper Programs in 2025, were approximately $33.7. Expected debt levels, and therefore expected interest payments, are difficult to predict, as they are significantly impacted by items such as future acquisitions, repurchases of Common Stock and dividend payments, as well as payments or additional borrowings that reduce or increase the underlying revolver balance. The table above also excludes borrowings of $1,534.1 under each Delayed Draw Term Loan that occurred subsequent to December 31, 2025 and related interest.

(2) Interest related to the Floating Rate Senior Notes (as defined below) is included in the table above at the effective rate as of December 31, 2025.

(3) The Company’s operating lease payments included in this table reflect the future minimum undiscounted fixed lease payments, which serve as the basis for calculating the Company’s operating lease liabilities as of December 31, 2025. The table above excludes any variable lease payments not included in the measurement of the Company’s right-of-use assets and operating lease liabilities, due to their uncertainty. Finance leases are not material to the Company individually or in the aggregate and as such have been excluded from the table above.

(4) Purchase obligations relate primarily to open purchase orders for goods and services, including but not limited to, raw materials and components to be used in production.

(5) This table includes estimated benefit payments expected to be made under the Company’s unfunded pension and postretirement benefit plans, as well as the anticipated minimum required contributions under the Company’s funded pension plans, the most significant of which covers certain of its U.S. employees. Over the past several years, there has been no minimum requirement for Company contributions to our defined benefit pension plans in the United States (“U.S. Pension Plans”) due to prior contributions made in excess of minimum requirements, and as a result, there was no anticipated minimum required contribution included in the table above related to the U.S. Pension Plans for 2026. The Company did not make any voluntary contributions to its U.S. Pension Plans in 2025 and 2024. It is not possible to reasonably estimate expected required contributions in the above table after 2026, since several assumptions are required to calculate minimum required contributions, such as the discount rate and expected returns on pension assets.

(6) As of December 31, 2025, the Company has recorded net liabilities of approximately $311.7 related to unrecognized tax benefits. These liabilities have been excluded from the above table due to the high degree of uncertainty regarding the timing of potential future cash flows. It is difficult to make a reasonably reliable estimate of the amount and period in which all of these liabilities might be paid.

#### Repatriation of Foreign Earnings and Related Income Taxes

The Company has previously indicated an intention to repatriate most of its pre-2025 accumulated earnings and has accrued the foreign and U.S. state and local taxes, if applicable, on those earnings, as appropriate. The associated tax payments are due as the repatriations are made. The Company intends to indefinitely reinvest the remaining pre-2025 foreign earnings. As of December 31, 2025, the Company has accrued the foreign and U.S. state and local taxes associated with the foreign earnings that it intends to repatriate. The Company intends to evaluate future earnings for repatriation, and will accrue for those distributions where appropriate, and to indefinitely reinvest all other foreign earnings. In addition, the Company paid the balance of the Transition Tax (as defined in Note 6 to the accompanying

Notes to Consolidated Financial Statements), net of applicable tax credits and deductions, during the second quarter of 2025, as permitted under the Tax Cuts and Jobs Act (the “Tax Act”).

#### H.R. 1

On July 4, 2025, the United States federal government enacted the tax and spending bill H.R. 1. This legislation contains changes to previously enacted provisions of the Internal Revenue Code and provides for extensions of certain expiring tax provisions included in the Tax Act. Certain corporate tax provisions in H.R. 1 were enacted with retroactive effect to January 1, 2025. H.R. 1 did not have a material impact on our effective tax rate in 2025. The Company continues to evaluate the corporate tax provisions contained within H.R. 1, and the future impact of H.R. 1 depends on several factors, including interpretive regulatory guidance, which has not yet been released.

The following table summarizes the Company’s cash flows from operating, investing and financing activities for the years ended December 31, 2025, 2024, and 2023, as reflected in the Consolidated Statements of Cash Flow:

| ​ ​ ​ | ​ ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2025 | ​ ​ ​ ​ | ​ ​ 2024 | ​ ​ ​ ​ | ​ ​ 2023 |
| --- | --- | ---: | --- | ---: | --- | ---: |
| Net cash provided by operating activities | ​ | $5,374.7 | ​ | $2,814.7 | ​ | $2,528.7 |
| Net cash used in investing activities | ​ | (5,082.1) | ​ | (2,648.6) | ​ | (1,393.7) |
| Net cash provided by (used in) financing activities | ​ | 7,423.2 | ​ | 1,729.9 | ​ | (1,012.4) |
| Effect of exchange rate changes on cash and cash equivalents | ​ | 97.8 | ​ | (54.0) | ​ | (20.7) |
| Net increase in cash and cash equivalents | ​ | $7,813.6 | ​ | $1,842.0 | ​ | $101.9 |

#### Operating Activities

The ability to generate cash from operating activities is one of the Company’s fundamental financial strengths. Net cash provided by operating activities (“Operating Cash Flow”) was $5,374.7 in 2025, compared to $2,814.7 in 2024 and $2,528.7 in 2023. The increase in Operating Cash Flow in 2025 compared to 2024 is primarily due to the increase in net income and by a lower usage of cash related to the change in working capital, as discussed below. The increase in Operating Cash Flow in 2024 compared to 2023 is primarily due to the increase in net income, partially offset by a higher usage of cash related to the change in working capital, as discussed below.

In 2025, the components of working capital as presented on the accompanying Consolidated Statements of Cash Flow increased $32.3, excluding the impact of acquisitions and foreign currency translation, primarily due to increases in accounts receivable of $964.4, inventories of $487.4 and prepaid expenses and other current assets of $150.7, partially offset by increases in accounts payable of $554.1 and accrued liabilities, including income taxes, of $1,016.1. In 2024, the components of working capital as presented on the accompanying Consolidated Statements of Cash Flow increased $210.5, excluding the impact of acquisitions and foreign currency translation, primarily due to increases in accounts receivable of $586.8, inventories of $200.1 and prepaid expenses and other current assets of $106.8, partially offset by increases in accounts payable of $423.1 and accrued liabilities, including income taxes, of $260.1. In 2023, the components of working capital as presented on the accompanying Consolidated Statements of Cash Flow decreased $149.8, excluding the impact of acquisitions and foreign currency translation, primarily due to decreases in accounts receivable of $146.4 and inventories of $71.4, partially offset by a decrease in accounts payable of $34.6 and an increase in prepaid expenses and other current assets of $34.1.

The following describes the significant changes in the amounts as presented on the accompanying Consolidated Balance Sheets at December 31, 2025 compared to December 31, 2024. Accounts receivable increased $1,429.2 to $4,717.1, primarily driven by higher sales in the fourth quarter of 2025 relative to the fourth quarter of 2024, along with the impact of the five acquisitions (the “2025 Acquisitions”) that closed during 2025, and the effect of translation from exchange rate changes (“Translation”) at December 31, 2025 compared to December 31, 2024. Days sales outstanding at December 31, 2025 and 2024 were 66 days and 68 days, respectively. Inventories increased $879.2 to $3,424.9, primarily driven by the impact of the 2025 Acquisitions, along with the impact of higher sales in 2025 relative to the prior year and Translation. Inventory days at December 31, 2025 and 2024 were 77 days and 80 days, respectively. Prepaid expenses and other current assets increased $174.0 to $691.0, primarily due to increases in various prepaid expenses and other current receivables, along with the impact of the 2025 Acquisitions. Property, plant and equipment, net, increased $593.8 to $2,305.6, primarily due to purchases of $1,040.3 and the impact of the 2025 Acquisitions and Translation, partially offset by depreciation of $640.1. Goodwill increased $2,339.2 to $10,575.4, primarily driven by goodwill recognized from the 2025 Acquisitions, in particular the Andrew and Trexon acquisitions, and Translation.

Other intangible assets, net, increased $1,016.3 to $2,241.4, primarily due to the recognition of certain intangible assets related to the 2025 Acquisitions, in particular the Andrew and Trexon acquisitions, partially offset by amortization of $192.0 associated with the Company’s current intangible assets. Other long-term assets increased $266.2 to $847.3, primarily due to an increase in operating lease right-of-use assets resulting from both new and renewed lease agreements entered into during 2025 and acquired leases resulting from acquisitions. Accounts payable increased $842.5 to $2,661.9, primarily due to increased purchasing activity related to the higher sales levels in 2025, along with the impact of the 2025 Acquisitions and Translation. Payable days at December 31, 2025 and 2024 were 60 days and 58 days, respectively. Total accrued expenses, including accrued income taxes, increased $1,341.0 to $3,203.7, primarily as a result of increases in accrued salaries, wages and employee benefits, accrued income taxes, and various other accrued expenses, along with the impact of the 2025 Acquisitions. Accrued pension and postretirement benefit obligations increased $8.4 to $138.2, primarily due to the impact of lower discount rates used to calculate our projected benefit obligation and the funded status of our defined benefit pension plans. Other long-term liabilities, including deferred tax liabilities, increased $335.3 to $1,221.4, primarily as a result of an increase in long-term lease liabilities resulting from both new and renewed lease agreements entered into during 2025, along with acquired leases resulting from acquisitions.

In addition to Operating Cash Flow, the Company also considers Free Cash Flow, a non-GAAP financial measure defined in the “Non-GAAP Financial Measures” section below, as a key metric in measuring the Company’s ability to generate cash. The following table reconciles Free Cash Flow to its most directly comparable U.S. GAAP financial measure for the years ended December 31, 2025, 2024 and 2023. The increase in Free Cash Flow in 2025 compared to 2024 was driven by the increase in Operating Cash Flow, partially offset by the increased capital expenditures levels, as described above. Free Cash Flow decreased modestly in 2024 compared to 2023, as the increase in capital expenditures was largely offset by the increase in Operating Cash Flow, as described above.

| ​ ​ | ​ ​ ​ ​ | ​ ​ 2025 | ​ ​ ​ ​ | ​ ​ 2024 | ​ ​ ​ ​ | ​ ​ 2023 |
| --- | --- | ---: | --- | ---: | --- | ---: |
| Operating Cash Flow (GAAP) |  | $5,374.7 |  | $2,814.7 |  | $2,528.7 |
| Capital expenditures (GAAP) | ​ | (996.6) | ​ | (665.4) | ​ | (372.8) |
| Proceeds from disposals of property, plant and equipment (GAAP) | ​ | 14.8 | ​ | 7.8 | ​ | 4.0 |
| Free Cash Flow (non-GAAP) | ​ | $4,392.9 | ​ | $2,157.1 | ​ | $2,159.9 |

#### Investing Activities

Cash flows from investing activities primarily consist of cash flows associated with capital expenditures, proceeds from disposals of property, plant and equipment, net, purchases (sales and maturities) of short- and long-term investments, and acquisitions.

Net cash used in investing activities was $5,082.1 in 2025, compared to $2,648.6 in 2024 and $1,393.7 in 2023. In 2025, net cash used in investing activities was primarily driven by the use of $3,818.6 to fund acquisitions, capital expenditures (net of disposals) of $981.8 and net purchases of short-term investments of $281.7. In 2024, net cash used in investing activities was primarily driven by the use of $2,156.4 to fund acquisitions and capital expenditures (net of disposals) of $657.6, partially offset by net sales and maturities of short-term investments of $163.5. In 2023, net cash used in investing activities was primarily driven by the use of $970.4 to fund acquisitions, capital expenditures (net of disposals) of $368.8, and net purchases of short-term investments of $59.4. The elevated capital expenditures in 2025 were driven by investments, primarily in support of the robust growth in our IT datacom market. We currently expect this elevated level of capital spending to continue into 2026 to support the continued growth we are experiencing related to AI applications in our IT datacom market.

#### Financing Activities

Cash flows from financing activities primarily consist of cash flows associated with borrowings and repayments of the Company’s credit facilities and other long-term debt, repurchases of Common Stock, proceeds from stock option exercises, dividend payments, and distributions to and purchases of noncontrolling interests.

Net cash provided by financing activities was $7,423.2 in 2025 and $1,729.9 in 2024, compared to net cash used in financing activities of $1,012.4 in 2023. In 2025, net cash provided by financing activities was primarily driven by (i) net cash proceeds from borrowings of $8,921.7, primarily related to the issuances of the 2028 Senior Notes, the 2032 Euro Notes and the November Senior Notes (each as defined below), and (ii) cash proceeds of $553.0 from the exercise of stock options, partially offset by (a) redemption of the 2.050% Senior Notes of $400.0, (b) repurchases of the

Company’s Common Stock of $665.2, (c) dividend payments of $802.2, (d) payments of $89.1 related to debt financing costs associated with the Delayed Draw Term Loans, as well as the issuances of the 2028 Senior Notes, the 2032 Euro Notes and the November Senior Notes, (e) settlement of the treasury locks of $88.0, and (f) distributions to and purchases of noncontrolling interests of $5.8. In 2024, net cash provided by financing activities was primarily driven by (i) net cash proceeds from borrowings of $2,991.3, primarily related to the issuances of the April Senior Notes and October Senior Notes, each as defined below, and (ii) cash proceeds of $447.4 from the exercise of stock options, partially offset by (a) repurchases of the Company’s Common Stock of $689.3, (b) dividend payments of $595.1, (c) debt repayments of $364.4, primarily related to the redemption of the 3.20% Senior Notes in the second quarter of 2024, (d) distributions to and purchases of noncontrolling interests of $33.0, and (e) payments of $28.4 related to debt financing costs associated with the Company’s amended and restated revolving credit facility in March 2024 as well as the issuances of the April Senior Notes and October Senior Notes. In 2023, net cash used in financing activities was primarily driven by (i) net repayments of $632.6 related to the Company’s commercial paper programs, primarily the U.S. Commercial Paper Program, (ii) repurchases of the Company’s Common Stock of $585.1, (iii) dividend payments of $500.6, (iv) distributions to and purchases of noncontrolling interests of $24.0, (v) other debt repayments of $15.7, (vi) payments of $2.3 related to debt financing costs associated with the Company’s $350.0 aggregate principal amount of unsecured 4.750% Senior Notes due March 30, 2026 (the “2026 Senior Notes”), and (vii) payment of $1.5 associated with the deferred purchase price related to an acquisition, partially offset by (a) cash proceeds of $394.5 from the exercise of stock options and (b) net cash proceeds from borrowings of $354.9, primarily related to the issuance of the 2026 Senior Notes.

The Company has significant flexibility to meet its financial commitments. The Company uses debt financing to lower the overall cost of capital and increase return on stockholders’ equity. The Company’s debt financing includes the use of the Commercial Paper Programs, the Revolving Credit Facility, and senior notes as part of its overall cash management strategy.

On March 21, 2024, the Company entered into a third amended and restated credit agreement, which amended and restated its $2,500.0 unsecured revolving credit facility, increasing the lenders’ aggregate unsecured revolving commitments under the facility by $500.0 to $3,000.0 (the “Revolving Credit Facility”). The Revolving Credit Facility matures in March 2029 and gives the Company and certain of its subsidiaries the ability to borrow, in various currencies, at a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates, in the case of U.S. dollar borrowings, are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). The Revolving Credit Facility was undrawn on the date it was amended and restated. The Company may utilize the Revolving Credit Facility for general corporate purposes. As of December 31, 2025 and 2024, there were no outstanding borrowings under the Revolving Credit Facility. The Revolving Credit Facility requires payment of certain annual agency and commitment fees and requires that the Company satisfy certain financial covenants. On December 31, 2025, the Company was in compliance with the financial covenants under the Revolving Credit Facility.

On August 22, 2025, the Company entered into (i) a three-year, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions, and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “Three-Year Delayed Draw Term Loan”), which is scheduled to mature on the three-year anniversary of the funding date, and (ii) a 364-day, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “364-Day Delayed Draw Term Loan” and, together with the Three-Year Delayed Draw Term Loan, the “Delayed Draw Term Loans”, and individually, a “Delayed Draw Term Loan”), which is scheduled to mature on the date that is 364 days after the funding date. Each Delayed Draw Term Loan may only be drawn in a single drawing over the life of the applicable facility. Each Delayed Draw Term Loan may be repaid at any time without premium or penalty and, once repaid, cannot be reborrowed. Interest rates under each Delayed Draw Term Loan are based on a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. On November 13, 2025, the aggregate commitment amount in respect of each of the Delayed Draw Term Loans was individually reduced to $1,534.1. As of December 31, 2025, the Company had not yet drawn upon either Delayed Draw Term Loan, and as such, there were no outstanding borrowings under either Delayed Draw Term Loan. On December 31, 2025, the Company was in compliance with the financial covenants under each Delayed Draw Term Loan. In January 2026, the Company drew the full $1,534.1 available under each of the Delayed Draw Term Loans to fund a portion of the consideration for the CommScope acquisition, which closed on January 9, 2026, as discussed further in Note 15 of the accompanying Notes to Consolidated Financial Statements.

The Company has a commercial paper program (the “U.S. Commercial Paper Program”) pursuant to which the Company may issue short-term unsecured commercial paper notes (the “USCP Notes” or “U.S. Commercial Paper”) in one or more private placements in the United States. On March 21, 2024, in conjunction with the increase in the capacity of the Revolving Credit Facility, the Company increased the borrowings available under its U.S. Commercial Paper Program by $500.0. As of December 31, 2025, the maximum aggregate principal amount outstanding of USCP Notes at any time is $3,000.0. The Company utilizes borrowings under the U.S. Commercial Paper Program for general corporate purposes, which, in recent years, have included fully or partially funding acquisitions, as well as repaying certain outstanding senior notes. The Company borrowed under the U.S. Commercial Paper Program throughout much of 2025 and 2024, the proceeds of which were used for general corporate purposes, including, but not limited to, partially funding the Andrew and CIT acquisitions. Before December 31, 2025 and 2024, the Company repaid all of its USCP Notes then outstanding. As of December 31, 2025 and 2024, there were no USCP Notes outstanding.

The Company and one of its wholly owned European subsidiaries (the “Euro Issuer”) also have a commercial paper program (the “Euro Commercial Paper Program” and, together with the U.S. Commercial Paper Program, the “Commercial Paper Programs”), pursuant to which the Euro Issuer may issue short-term unsecured commercial paper notes (the “ECP Notes” and, together with the USCP Notes, the “Commercial Paper”), which are guaranteed by the Company and are to be issued outside of the United States. The ECP Notes may be issued in Euros, Sterling, U.S. dollars or other currencies. The maximum aggregate principal amount outstanding of ECP Notes at any time is $2,000.0. The Company utilizes borrowings under the Euro Commercial Paper Program for general corporate purposes, which may include, for example, fully or partially funding acquisitions. The Company did not borrow under the Euro Commercial Paper Program during 2025 or 2024. As of December 31, 2025 and 2024, there were no ECP Notes outstanding.

Amounts available under the Commercial Paper Programs may be borrowed, repaid and re-borrowed from time to time. In conjunction with the Revolving Credit Facility, as of December 31, 2025, the authorization from the Board limits the maximum aggregate principal amount outstanding of USCP Notes, ECP Notes, and any other commercial paper or similar programs, along with outstanding amounts under the Revolving Credit Facility, at any time to $3,000.0. The Commercial Paper Programs are rated A-2 by Standard & Poor’s and P-2 by Moody’s and, based on the Board’s authorization described above, are currently backstopped by the Revolving Credit Facility, as amounts undrawn under the Revolving Credit Facility are available to repay Commercial Paper, if necessary. The Company reviews its optimal mix of short-term and long-term debt regularly and may replace certain amounts of Commercial Paper, short-term debt and current maturities of long-term debt with new issuances of long-term debt in the future.

As of December 31, 2025, the Company has outstanding senior notes (the “Senior Notes”) as follows:

| ​ ​ Principal Amount | ​ ​ ​ | ​ ​ Interest ​ Rate ​ | ​ ​ Maturity |
| --- | --- | ---: | --- |
| $350.0 | **​** | 4.750% | March 2026 |
| ​ 700.0 | **​** | 5.050% | April 2027 |
| ​ 500.0 | **​** | Compounded SOFR plus 0.53% | November 2027 |
| ​ 750.0 | **​** | 3.800% | November 2027 |
| ​ 750.0 | **​** | 4.375% | June 2028 |
| ​ 750.0 | **​** | 3.900% | November 2028 |
| ​ 450.0 | **​** | 5.050% | April 2029 |
| ​ 500.0 | **​** | 4.350% | June 2029 |
| ​ 900.0 | **​** | 2.800% | February 2030 |
| ​ 1,000.0 | **​** | 4.125% | November 2030 |
| ​ 750.0 | **​** | 2.200% | September 2031 |
| ​ 1,250.0 | **​** | 4.400% | February 2033 |
| ​ 600.0 | **​** | 5.250% | April 2034 |
| ​ 750.0 | **​** | 5.000% | January 2035 |
| ​ 1,600.0 | **​** | 4.625% | February 2036 |
| ​ 500.0 | **​** | 5.375% | November 2054 |
| ​ 1,650.0 | **​** | 5.300% | November 2055 |
| ​ ​ | **​** | ​ ​ | ​ |
| €500.0 | **​** | 0.750% | May 2026 (Euro Notes) |
| ​ 500.0 | **​** | 2.000% | October 2028 (Euro Notes) |
| ​ 600.0 | **​** | 3.125% | June 2032 (Euro Notes) |

### U.S. Senior Notes

On March 3, 2025, the Company used a combination of cash on hand and borrowings under the U.S. Commercial Paper Program to repay the $400.0 aggregate principal amount of unsecured 2.050% Senior Notes due March 1, 2025 upon maturity.

On June 12, 2025, the Company issued $750.0 aggregate principal amount of unsecured 4.375% Senior Notes due June 12, 2028 (the “2028 Senior Notes”). The Company used net proceeds from the 2028 Senior Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

On November 10, 2025, the Company issued (i) $500.0 aggregate principal amount of unsecured Floating Rate Senior Notes due November 15, 2027 (the “Floating Rate Senior Notes”), (ii) $750.0 aggregate principal amount of unsecured 3.800% Senior Notes due November 15, 2027 (the “3.800% Senior Notes”), (iii) $750.0 aggregate principal amount of unsecured 3.900% Senior Notes due November 15, 2028 (the “3.900% Senior Notes”), (iv) $1,000.0 aggregate principal amount of unsecured 4.125% Senior Notes due November 15, 2030 (the “4.125% Senior Notes”), (v) $1,250.0 aggregate principal amount of unsecured 4.400% Senior Notes due February 15, 2033 (the “4.400% Senior Notes”), (vi) $1,600.0 aggregate principal amount of unsecured 4.625% Senior Notes due February 15, 2036 (the “4.625% Senior Notes”) and (vii) $1,650.0 aggregate principal amount of unsecured 5.300% Senior Notes due November 15, 2055 (the “5.300% Senior Notes” and, together with the Floating Rate Senior Notes, the 3.800% Senior Notes, the 3.900% Senior Notes, the 4.125% Senior Notes, the 4.400% Senior Notes, and the 4.625% Senior Notes, the “November Senior Notes”).

On January 9, 2026, the Company used the net proceeds from the November Senior Notes, together with borrowings under the Delayed Draw Term Loans and cash on hand, to fund the cash consideration for the CommScope acquisition, along with fees and expenses related thereto. As a result of this increase in debt levels compared to 2025, the Company expects interest expense, net of interest income, to increase to approximately $800.0 in 2026.

On April 1, 2024, the Company used cash on hand to repay the $350.0 aggregate principal amount of unsecured 3.20% Senior Notes due April 1, 2024 upon maturity.

On April 5, 2024, the Company issued three series of unsecured senior notes (collectively, the “April Senior Notes”): (i) $450.0 aggregate principal amount of unsecured 5.050% Senior Notes due April 5, 2027 (the “Original 2027 Senior Notes”), (ii) $450.0 aggregate principal amount of unsecured 5.050% Senior Notes due April 5, 2029 (the “2029 Senior Notes”) and (iii) $600.0 aggregate principal amount of unsecured 5.250% Senior Notes due April 5, 2034 (the “2034 Senior Notes”). The Company used net proceeds from the April Senior Notes, together with a combination of cash on hand and borrowings under the U.S. Commercial Paper Program, to fund the cash consideration for the CIT acquisition in May 2024, along with the fees and expenses related thereto.

On October 31, 2024, the Company issued three series of unsecured senior notes (collectively, the “October Senior Notes”): (i) $250.0 aggregate principal amount of unsecured 5.050% Senior Notes due April 5, 2027 (the “Additional 2027 Senior Notes”), which constituted a further issuance of the Company’s Original 2027 Senior Notes issued in April 2024, thus forming a single series with, and having the same terms (other than the issue date, issue price and the first interest payment date) as, the Original 2027 Senior Notes, and thus having a total aggregate principal amount of $700.0 of unsecured 5.050% Senior Notes due April 5, 2027 outstanding (the Original 2027 Senior Notes, together with the Additional 2027 Senior Notes collectively referred to as the “2027 Senior Notes”), (ii) $750.0 aggregate principal amount of unsecured 5.000% Senior Notes due January 15, 2035 (the “2035 Senior Notes”) and (iii) $500.0 aggregate principal amount of unsecured 5.375% Senior Notes due November 15, 2054 (the “2054 Senior Notes”). On January 31, 2025, the Company used the net proceeds from the October Senior Notes, together with borrowings under the U.S. Commercial Paper Program and cash on hand, to fund the cash consideration for the Andrew acquisition, along with the fees and expenses related thereto.

All of the Company’s outstanding senior notes in the United States (the “U.S. Senior Notes”) are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes. Interest on each series of U.S. Senior Notes is payable semiannually, except for the Floating Rate Senior Notes for which interest is payable quarterly. The Company may, at its option, redeem some or all of any series of U.S. Senior Notes at any time, subject to certain terms and conditions, except that the Company may not redeem the Floating Rate Senior Notes at its option prior to their maturity.

### Euro Senior Notes

On June 16, 2025, the Company issued €600.0 (approximately $685.9 at date of issuance) aggregate principal amount of unsecured 3.125% Senior Notes due June 16, 2032 (the “2032 Euro Notes”). The 2032 Euro Notes are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes. Interest on the 2032 Euro Notes is payable annually on June 16 of each year, commencing on June 16, 2026. The Company may, at its option, redeem some or all of the 2032 Euro Notes at any time, subject to certain terms and conditions. The Company used net proceeds from the 2032 Euro Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

The Euro Issuer has two outstanding unsecured senior notes issued in Europe (the “Existing Euro Notes”, together with the 2032 Euro Notes, the “Euro Notes” and, together with the U.S. Senior Notes, the “Senior Notes”). The Euro Issuer has €500.0 (approximately $545.4 at date of issuance) aggregate principal amount of unsecured 0.750% Senior Notes due May 4, 2026 (the “2026 Euro Notes”), the net proceeds of which were used to repay amounts outstanding under the then existing revolving credit facility. In addition, the Euro Issuer also has €500.0 (approximately $574.6 at date of issuance) aggregate principal amount of unsecured 2.000% Senior Notes due October 8, 2028 (the “2028 Euro Notes”), the net proceeds of which were used to repay a portion of the outstanding amounts under our Commercial Paper Programs, with the remainder of the net proceeds being used for general corporate purposes. The Existing Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s senior unsecured and unsubordinated indebtedness and are fully and unconditionally guaranteed on a senior unsecured basis by the Company. Interest on each series of Existing Euro Notes is payable annually. The Company may, at its option, redeem some or all of either series of Existing Euro Notes at any time, subject to certain terms and conditions.

The Senior Notes impose certain obligations on the Company and prohibit various actions by the Company unless it satisfies certain financial requirements. On December 31, 2025, the Company was in compliance with all requirements under its Senior Notes. Refer to Note 4 of the Notes to Consolidated Financial Statements for further information related to the Company’s debt.

On April 23, 2024, the Board authorized a new stock repurchase program under which the Company may purchase up to $2,000.0 of its Common Stock during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the year ended December 31, 2025, the Company repurchased 7.4 million shares of its Common Stock for $665.2 under the 2024 Stock Repurchase Program. Of the total repurchases made in 2025 under the 2024 Stock Repurchase Program, 6.0 million shares, or $512.3, have been retired by the Company, with the remainder of the repurchased shares retained in Treasury stock at the time of repurchase. From January 1, 2026 to January 31, 2026, the Company repurchased 0.3 million additional shares of its Common Stock for $44.2, and, as of February 1, 2026, the Company has remaining authorization to purchase up to $826.9 of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

In April 2021, the Board authorized a stock repurchase program under which the Company could purchase up to $2,000.0 of its Common Stock during the three-year period ending April 27, 2024 (the “2021 Stock Repurchase Program”). During the year ended December 31, 2024, the Company repurchased 4.1 million shares of its Common Stock for $225.6 under the 2021 Stock Repurchase Program. All of the repurchased shares under the 2021 Stock Repurchase Program during 2024 have been retired by the Company. As a result of these repurchases, the Company completed all repurchases authorized under the 2021 Stock Repurchase Program, and, therefore, the 2021 Stock Repurchase Program has terminated.

Contingent upon declaration by the Board, the Company pays a quarterly dividend on shares of its Common Stock. On October 24, 2023, the Board approved an increase to the Company’s quarterly dividend rate from $0.105 per share to $0.11 per share, effective with dividends declared in the fourth quarter of 2023. On July 23, 2024, the Board approved an increase to the Company’s quarterly dividend rate from $0.11 per share to $0.165 per share, effective with dividends declared in the third quarter of 2024, and on October 21, 2025, the Board approved an additional increase to the Company’s quarterly dividend rate from $0.165 per share to $0.25 per share, effective with dividends declared in the fourth quarter of 2025, contingent upon declaration by the Board. The following table summarizes the declared quarterly dividends per share during each of the three years ended December 31, 2025, 2024 and 2023:

| ​ ​ | ​ | ​ ​ 2025 | ​ ​ | ​ ​ 2024 | ​ ​ | ​ ​ 2023 |
| --- | --- | --- | --- | --- | --- | --- |
| First Quarter | ​ | $0.165 | **​** | $0.11 | **​** | $0.105 |
| Second Quarter | ​ | ​ 0.165 | **​** | ​ 0.11 | **​** | ​ 0.105 |
| Third Quarter | ​ | ​ 0.165 | **​** | ​ 0.165 | **​** | ​ 0.105 |
| Fourth Quarter | ​ | ​ 0.25 | **​** | ​ 0.165 | **​** | ​ 0.11 |
| Total | ​ | $0.745 | **​** | $0.55 | **​** | $0.425 |

The following table summarizes the dividends declared and paid during the years ended December 31, 2025, 2024 and 2023:

| ​ ​ | ​ ​ ​ ​ | ​ ​ 2025 | ​ ​ | ​ ​ 2024 | ​ ​ | ​ ​ 2023 |
| --- | --- | ---: | --- | ---: | --- | ---: |
| Dividends declared | ​ | $909.3 | ​ | $662.9 | ​ | $507.4 |
| Dividends paid (including those declared in the prior year) | ​ | 802.2 | ​ | 595.1 | ​ | 500.6 |

### Pensions

The Company and certain of its subsidiaries in the United States have defined benefit pension plans (“U.S. Pension Plans”), which cover certain U.S. employees and which represent the majority of the plan assets and benefit obligations of the aggregate defined benefit plans of the Company. The U.S. Pension Plans’ benefits are generally based on years of service and compensation and are generally noncontributory. The majority of U.S. employees are not covered by the U.S. Pension Plans and are instead covered by various defined contribution plans. The Company also has an unfunded Supplemental Employee Retirement Plan (“SERP” and, together with the U.S. Pension Plans, “U.S. Plans”), which provides for the payment of the portion of annual pension that cannot be paid from the retirement plan as a result of regulatory limitations on average compensation for purposes of the benefit computation. Certain foreign subsidiaries also have defined benefit plans covering their employees (the “Foreign Plans” and, together with the U.S. Plans, the “Plans”). The total liability for accrued pension and postretirement benefit obligations associated with the Company’s pension and postretirement benefit plans decreased in 2025 to $87.5 from $89.2 in 2024, primarily driven by the effect of lower discount rates in 2025 on our projected benefit obligations along with actual positive returns on plan assets in 2025, partially offset by interest cost. There is no current requirement for cash contributions to any of the U.S. Plans, and the Company plans to evaluate annually, based on actuarial calculations and the investment performance of the Plans’ assets, the timing and amount of cash contributions in the future, if any.

Refer to Note 9 of the Notes to Consolidated Financial Statements for further discussion of the Company’s benefit plans and other postretirement benefit plans.

### Acquisitions

During 2025, the Company completed five acquisitions (the “2025 Acquisitions”), including the acquisitions of Andrew and Trexon, for approximately $3,818.6, net of cash acquired. The Andrew acquisition has been included in the Communications Solutions segment, three acquisitions including Trexon have been included in the Harsh Environment Solutions segment, and one acquisition has been included in the Interconnect and Sensor Systems segment. The 2025 Acquisitions were each funded using cash on hand, proceeds from the October Senior Notes, borrowings under the U.S. Commercial Paper Program, or a combination thereof. The 2025 Acquisitions were not material, either individually or in the aggregate, to the Company’s financial results.

During 2024, the Company completed two acquisitions (the “2024 Acquisitions”), including the acquisition of CIT, for approximately $2,156.4, net of cash acquired. Both acquisitions have been included in the Harsh Environment Solutions segment. The 2024 Acquisitions were each funded using cash on hand, proceeds from the April Senior Notes or borrowings under the U.S. Commercial Paper Program, or a combination thereof. The 2024 Acquisitions are not material, either individually or in the aggregate, to the Company’s financial results.

#### Acquisition-related Expenses

In 2025, the Company incurred $181.2 ($148.8 after-tax) of acquisition-related expenses, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the Andrew and Trexon acquisitions and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $103.4 are presented separately in the Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $77.8 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Consolidated Statements of Income).

In 2024, the Company incurred $145.6 ($119.3 after-tax) of acquisition-related expenses, comprised primarily of (i) external transaction costs associated with acquisitions and the non-cash amortization related to the value associated with acquired backlog resulting from the CIT acquisition (such acquisition-related expenses aggregating $127.4 are presented separately in the Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $18.2 associated with the CIT acquisition (such costs are recorded in Cost of sales in the Consolidated Statements of Income).

#### Acquisition of CommScope

On January 9, 2026, pursuant to a purchase agreement announced on August 4, 2025, the Company completed the acquisition of the Connectivity and Cable Solutions Business (which we now refer to collectively as “CommScope”) from Vistance Networks, Inc. (“Vistance”, formerly known as CommScope Holding Company, Inc.) for an aggregate purchase price of approximately $10,500.0 in cash, subject to customary post-closing adjustments. The Company funded the CommScope acquisition through a combination of net proceeds from the Delayed Draw Term Loans, the November Senior Notes and cash on hand, as discussed in Note 4 of the accompanying Notes to Consolidated Financial Statements.

For further discussion of the Company’s acquisitions, refer to Note 11 and Note 15 of the Notes to Consolidated Financial Statements.

### Environmental Matters

Certain operations of the Company are subject to environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

### Inflation and Costs

The cost of the Company’s products is influenced by the cost of a wide variety of raw materials. The Company strives to offset the impact of increases in the cost of raw materials, labor and services through price increases, productivity improvements and cost saving programs. However, in certain markets, implementing price increases can be difficult, and there is no guarantee that the Company will be successful. From time to time, the Company has encountered, and in the future may encounter, difficulties in obtaining certain raw materials or components necessary for production at reasonable costs due to supply chain constraints and logistical challenges, which may include regulatory restrictions and the imposition of additional tariffs. These difficulties may also negatively impact the pricing of materials and components sourced or used by the Company. While the Company does not currently anticipate significant, broad-based difficulties in obtaining raw materials or components necessary for production, inflationary pressures and increased commodity prices may impact the cost and availability of certain raw materials and components used by the Company and result in supply shortages for discrete raw materials or components. For a discussion of certain risks related to inflation and costs, refer to the risk factor titled “*The Company and certain of its suppliers and customers have experienced, and may in the future experience, difficulties obtaining certain raw materials and components, and the cost of certain of the Company’s raw materials and components may increase”* in Part I, Item 1A. *Risk Factors* herein.

### Foreign Currency Exchange Rates

The Company conducts business in many foreign currencies through its worldwide operations, and as a result, is subject to foreign exchange exposure due to changes in exchange rates of the various currencies, including possible currency devaluations. Changes in exchange rates can positively or negatively affect the Company’s sales, operating margins and equity. The Company attempts to mitigate currency risk in a number of ways, such as locating factories in the same country or region in which products are sold, hedging contracts, cost reduction and pricing actions or working capital management. However, there can be no assurance that any or all such actions taken by the Company will be fully effective in successfully managing currency risk, including in the event of a significant and sudden decline in the value of any of the foreign currencies of the Company’s worldwide operations. For further discussion of foreign exchange exposures, risks and uncertainties, refer to the risk factor titled “*The Company’s results can be positively or negatively affected by changes in foreign currency exchange rates”* in Part I, Item 1A. *Risk Factors* herein.

### Non-GAAP Financial Measures

In addition to assessing the Company’s financial condition, results of operations, liquidity and cash flows in accordance with U.S. GAAP, management utilizes certain non-GAAP financial measures, defined below, as part of its internal reviews for purposes of monitoring, evaluating and forecasting the Company’s financial performance, communicating operating results to the Board and assessing related employee compensation measures. Management believes that these non-GAAP financial measures may be helpful to investors in assessing the Company’s overall financial performance, trends and year-over-year comparative results, in addition to the reasons noted below. Non-GAAP financial measures related to operating income, operating margin, net income attributable to Amphenol Corporation, effective tax rate and diluted EPS exclude income and expenses that are not directly related to the Company’s operating performance during the years presented. Items excluded in the presentation of such non-GAAP financial measures in any period may consist of, without limitation, acquisition-related expenses, refinancing-related costs, gains associated with bargain purchase acquisitions, the excess tax benefits related to stock-based compensation and certain other discrete tax items including, but not limited to, (i) the impact of tax audits relating to prior periods and (ii) significant changes in tax law. Non-GAAP financial measures related to net sales exclude the impact of foreign currency exchange rates and acquisitions. The non-GAAP financial information contained herein is included for supplemental purposes only and should not be considered in isolation or as a substitute for or superior to the related U.S. GAAP financial measures. In addition, these non-GAAP financial measures are not necessarily the same or comparable to similar measures presented by other companies as such measures may be calculated differently or may exclude different items.

The non-GAAP financial measures defined below should be read in conjunction with the Company’s financial statements presented in accordance with U.S. GAAP. The reconciliations of these non-GAAP financial measures to the most directly comparable U.S. GAAP financial measures for the years ended December 31, 2025, 2024 and 2023 are included in “Results of Operations” and “Liquidity and Capital Resources” within this Item 7:

- *Adjusted Diluted EPS* is defined as diluted earnings per share (as reported in accordance with U.S. GAAP), excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the years presented. Adjusted Diluted EPS is calculated as Adjusted Net Income attributable to Amphenol Corporation, as defined below, divided by the weighted average outstanding diluted shares as reported in the Consolidated Statements of Income.
- *Adjusted Effective Tax Rate* is defined as Provision for income taxes, as reported in the Consolidated Statements of Income, expressed as a percentage of Income before income taxes, as reported in the Consolidated Statements of Income, each excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the years presented.
- *Adjusted Net Income attributable to Amphenol Corporation* is defined as Net income attributable to Amphenol Corporation, as reported in the Consolidated Statements of Income, excluding income and expenses and their specific tax effects that are not directly related to the Company’s operating performance during the years presented.
- *Adjusted Operating Income* is defined as Operating income, as reported in the Consolidated Statements of Income, excluding income and expenses that are not directly related to the Company’s operating performance during the years presented.
- *Adjusted Operating Margin* is defined as Adjusted Operating Income (as defined above) expressed as a percentage of Net sales (as reported in the Consolidated Statements of Income).
- *Constant Currency Net Sales Growth* is defined as the year-over-year percentage change in net sales growth, excluding the impact of changes in foreign currency exchange rates. The Company’s results are subject to volatility related to foreign currency translation fluctuations. As such, management evaluates the Company’s sales performance based on actual sales growth in U.S. dollars, as well as Organic Net Sales Growth (as defined below) and Constant Currency Net Sales Growth, and believes that such information is useful to investors to assess the underlying sales trends.
- *Free Cash Flow* is defined as (i) Net cash provided by operating activities (“Operating Cash Flow” - as reported in accordance with U.S. GAAP) less (ii) capital expenditures (as reported in accordance with U.S. GAAP), net of proceeds from disposals of property, plant and equipment (as reported in accordance with U.S. GAAP), all of which are derived from the Consolidated Statements of Cash Flow. Free Cash Flow is an important liquidity measure for the Company, as we believe it is useful for management and investors to assess our ability to generate cash, as well as to assess how much cash can be used to reinvest in the growth of the Company or to return to stockholders through either stock repurchases or dividends.
- *Organic Net Sales Growth* is defined as the year-over-year percentage change in net sales growth resulting from operating volume and pricing changes and excludes the impact of (i) changes in foreign currency exchange rates (described above), which is outside the control of the Company, and (ii) acquisitions, both of which are taken as a percentage of the respective prior year period(s) net sales. The acquisition impact represents the percentage impact on net sales resulting from acquisitions that have not been included in the Company’s consolidated results for the full current year(s) and/or prior comparable year(s) presented. Such net sales related to these acquisitions do not reflect the underlying growth of the Company on a comparative basis. Management evaluates the Company’s sales performance based on actual sales growth in U.S. dollars, as well as Constant Currency Net Sales Growth (as defined above) and Organic Net Sales Growth, and believes that such information is useful to investors to assess the underlying sales trends.

### Recent Accounting Pronouncements

Refer to Note 1 of the Notes to Consolidated Financial Statements for a discussion of recently issued accounting pronouncements, including those adopted by the Company.

### Critical Accounting Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Management bases its estimates on historical experience along with other assumptions that we believe are reasonable in formulating our bases for making judgements regarding the carrying amounts of assets and liabilities that are not readily apparent elsewhere. Estimates are adjusted as new information becomes available. Actual results could differ from those estimates. The Company believes that the following accounting policies and estimates are most critical since they require significant assumptions and judgments that inherently are subject to risks and uncertainties. The significant accounting policies are more fully described in Note 1 of the Notes to Consolidated Financial Statements.

### Revenue Recognition

The Company’s primary source of revenues consist of product sales to either end customers and their appointed contract manufacturers (including original equipment manufacturers) or to distributors. Our revenues are derived from contracts with customers, which in most cases are customer purchase orders that may be governed by master sales agreements. For each contract, the promise to transfer the control of the products, each of which is individually distinct, is considered to be the identified performance obligation. As part of the consideration promised in each contract, the Company evaluates the customer’s credit risk. Our contracts do not have any significant financing components, as payment terms are generally due net 30 to 120 days after delivery. Although products are almost always sold at fixed prices, in determining the transaction price, we evaluate whether the price is subject to refund (due to returns) or adjustment (due to volume discounts, rebates, or price concessions) to determine the net consideration we expect to be entitled to. We allocate the transaction price to each distinct product based on its relative standalone selling price. Taxes assessed by governmental authorities and collected from the customer, including but not limited to sales and use taxes and value-added taxes, are not included in the transaction price.

The vast majority of our sales are recognized at a point-in-time under the core principle of recognizing revenue when control transfers to the customer, which generally occurs when we ship or deliver the product from our manufacturing facility to our customers, when our customer accepts and has legal title of the goods, and where the Company has a present right to payment for such goods. Based on the respective contract terms, most of our contracts’ revenues are recognized either (i) upon shipment based on free on board (“FOB”) shipping point or (ii) when the product arrives at its destination. For the years ended December 31, 2025, 2024 and 2023, less than 5% of our net sales were recognized over time, where the associated contracts relate to the sale of goods with no alternative use as they are only sold to a single customer and whose underlying contract terms provide the Company with an enforceable right to payment, including a reasonable profit margin, for performance completed to date, in the event of customer termination. For the contracts recognized over time, we typically record revenue using the input method, based on the materials and labor costs incurred to date relative to the contract’s total estimated costs. This method reasonably depicts when and as control of the goods transfers to the customer, since it measures our progress in producing the goods which is generally commensurate with this transfer of control. Since we typically invoice our customers at the same time that we satisfy our performance obligations, contract assets and contract liabilities related to our contracts with customers recorded in the Consolidated Balance Sheets were not material as of December 31, 2025 and 2024.

Standard product warranty coverage, which provides assurance that our products will conform to the contractually agreed-upon specifications for a limited period from the date of shipment, is typically offered, while extended or separately priced warranty coverage is typically not offered. The warranty claim is generally limited to a credit equal to the purchase price or a promise to repair or replace the product for a specified period of time at no additional charge. We estimate our warranty liability based on historical experience, product history, and current trends.

### Income Taxes

Deferred income taxes are provided for revenue and expenses which are recognized in different periods for income tax and financial statement reporting purposes. The Company recognizes the effects of changes in tax laws and rates on deferred income taxes in the period in which legislation is enacted. Deferred income taxes are provided on undistributed earnings of foreign subsidiaries in the period in which the Company determines it no longer intends to permanently reinvest such earnings outside the United States. As of December 31, 2025, the Company has not provided for deferred income taxes on undistributed foreign earnings of approximately $1,750 related to certain geographies, as it is the Company’s intention to permanently reinvest such earnings outside the United States. It is impracticable to calculate the amount of taxes that would be payable if these undistributed foreign earnings were to be repatriated. In addition, the Company remains indefinitely reinvested with respect to its financial statement basis in excess of tax basis of its investments in foreign subsidiaries. It is not practicable to determine the deferred tax liability with respect to such basis differences. Deferred tax assets are regularly assessed for recoverability based on both historical and anticipated earnings levels and a valuation allowance is recorded when it is more likely than not that these amounts will not be recovered.

The tax effects of an uncertain tax position taken or expected to be taken in income tax returns are recognized only if it is “more likely than not” to be sustained on examination by the taxing authorities, based on its technical merits as of the reporting date. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. The Company includes estimated interest and penalties related to unrecognized tax benefits in the provision for income taxes.

As a result of the Tax Act, the global intangible low-taxed income (“GILTI”) provision imposed a tax on certain earnings of foreign subsidiaries. The Company elected an accounting policy to account for GILTI as a period cost. The U.S. Treasury Department has issued final interpretive guidance relating to certain provisions of the Tax Act and proposed additional guidance related to the same provisions. The Company will account for the impact of additional guidance in the period in which any new guidance is released, if appropriate.

## Market risk

As filed, 8,098 characters.

#### (amounts in millions)

The Company, in the normal course of doing business, is exposed to a variety of risks, including market risks associated with foreign currency exchange rates and changes in interest rates. The Company does not have any significant concentration with any one counterparty.

### Foreign Currency Exchange Rate Risk

The Company conducts business in many foreign currencies through its worldwide operations, and as a result, is subject to foreign exchange exposure due to changes in exchange rates of the various currencies. Changes in exchange rates can positively or negatively affect the Company’s sales, operating margins and equity. The Company attempts to mitigate currency risk in a number of ways, such as locating factories in the same country or region in which products are sold, hedging contracts, cost reduction and pricing actions or working capital management. However, there can be no assurance that any or all such actions taken by the Company will be fully effective in successfully managing currency risk, including in the event of a significant and sudden decline in the value of any of the foreign currencies of the Company’s worldwide operations.

One of the Company’s wholly owned European subsidiaries (the “Euro Issuer”) has two outstanding unsecured senior notes issued in Europe (collectively, the “Existing Euro Notes”), each of which was issued with a principal amount of €500.0. The 0.750% Euro Senior Notes, which were issued in May 2020, mature on May 4, 2026, while the 2.000% Euro Senior Notes, which were issued in October 2018, mature on October 8, 2028. Additionally, on June 16, 2025, the Company issued €600.0 aggregate principal amount of unsecured 3.125% Senior Notes due June 16, 2032 (the “2032 Euro Notes”, and, together with the Existing Euro Notes, the “Euro Notes”). The Company and the Euro Issuer also have a commercial paper program (the “Euro Commercial Paper Program” and, together with the U.S. Commercial Paper Program, the “Commercial Paper Programs”), pursuant to which the Euro Issuer may issue, outside of the United States, short-term unsecured commercial paper notes. In addition to the Euro Notes, which are denominated in Euros, the Company may borrow, from time to time, under the Company’s $3,000.0 unsecured revolving credit facility (the “Revolving Credit Facility”) and Euro Commercial Paper Program, and such borrowings have been and may continue to be denominated in various foreign currencies, including the Euro. When borrowing in foreign currencies, there can be no assurance that the Company can successfully manage changes in exchange rates, including in the event of a significant and sudden decline in the value of any of the foreign currencies in which such borrowings are made. Refer to Note 4 of the Notes to Consolidated Financial Statements for a discussion of the Company’s debt.

The Company also utilizes foreign exchange forward contracts to hedge foreign currency exchange rate fluctuations for exposures associated with (i) certain transactions denominated in foreign currencies and (ii) net investments in certain foreign subsidiaries from which we expect to repatriate earnings to the United States. As of December 31, 2025, the fair value of such foreign exchange forward contracts was not material. A 10% change in foreign currency exchange rates would not have a material effect on the value of the hedges as of December 31, 2025 and 2024. The Company does not engage in purchasing forward contracts for trading or speculative purposes, and our derivative financial instruments are with large financial institutions with strong credit ratings. As of December 31, 2025, the Company does not have any significant concentration of exposure with any one counterparty. Refer to Note 1 and Note 5 of the accompanying Notes to Consolidated Financial Statements for a discussion of derivative financial instruments.

### Interest Rate Risk

The Company is subject to market risk from exposure to changes in interest rates based on the Company’s financing activities. The Company attempts to manage its exposure to interest rate risk through a mix of fixed and variable rate debt and hedging contracts in some cases. The Company currently has various fixed rate senior notes outstanding, in both the United States and Europe, with various maturity dates, the most recent of which were issued in 2025. In August 2025, the Company entered into $1,500.0 10-year and $1,000.0 30-year notional treasury lock derivative instruments to hedge interest rate risk prior to the issuance of the November Senior Notes. In November 2025, the Company issued the November Senior Notes. The treasury locks were settled upon the issuance of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively, for a cumulative loss of $88.0 ($67.4 after-tax). The cumulative after-tax loss was recorded in Accumulated other comprehensive income (loss) and is being amortized to Interest expense over the terms of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively. Refer to Note 4 and Note 5 of the accompanying Notes to Consolidated Financial Statements herein for further discussion related to these debt instruments.

Any borrowings under the Revolving Credit Facility bear interest at rates that fluctuate with a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates in the case of U.S. dollar borrowings are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). Any borrowings under the Commercial Paper Programs are subject to floating interest rates. Borrowings under each Delayed Draw Term Loan bear interest at rates that fluctuate with a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. The Floating Rate Senior Notes bear interest at a floating rate per annum, reset quarterly, equal to compounded SOFR, plus 0.53%. Therefore, when the Company borrows under these debt instruments, the Company is exposed to market risk related to changes in interest rates. As of December 31, 2025 and 2024, the Company had no borrowings outstanding under the Revolving Credit Facility, Commercial Paper Programs and Delayed Draw Term Loans. However, the Company borrowed $1,534.1 under each of the Delayed Draw Term Loans in January 2026 to fund a portion of the consideration for the CommScope acquisition. In addition, the Company borrowed under the U.S. Commercial Paper Program during 2025 from time to time, the proceeds of which were used for general corporate purposes, including, but not limited to, partially funding the Andrew acquisition in January 2025, as discussed further in Note 11 of the Notes to Consolidated Financial Statements. Although all such borrowings were repaid before the end of 2025, the Company may make additional borrowings under the Revolving Credit Facility and the Commercial Paper Programs from time to time in the future. As of December 31, 2025, 3% of the Company’s outstanding borrowings were subject to floating interest rates. Outstanding borrowings subject to floating interest rates will be higher going forward as a result of the borrowings under the Delayed Draw Term Loans that occurred subsequent to December 31, 2025, as discussed above.

To the extent that interest rates change and the Company has outstanding borrowings under any of our floating rate debt instruments (Commercial Paper Programs, Revolving Credit Facility and Delayed Draw Term Loans), our interest expense and interest payments will be impacted accordingly. A 10% change in the interest rate at December 31, 2025 and 2024 under our Revolving Credit Facility, Commercial Paper Programs, Delayed Draw Term Loans or Floating Rate Senior Notes would not have a material effect on interest expense. Although the Company does not expect changes in interest rates to have a material effect on net income or cash flows in 2026, there can be no assurance that interest rates will not change significantly from current levels.

## Controls and procedures

As filed, 3,347 characters.

The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) or 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of December 31, 2025. These disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms, and such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Based on their evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective at the reasonable assurance level as of December 31, 2025.

There has been no change in our internal control over financial reporting during the Company’s most recent fiscal quarter ended December 31, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

### Management Report on Internal Control

Internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes in accordance with accounting principles generally accepted in the United States of America. Due to its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Management is responsible for establishing and maintaining adequate internal control over financial reporting of Amphenol Corporation and its subsidiaries (the “Company”), as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, the Company conducted an evaluation of the effectiveness of the internal control over financial reporting based on criteria established in the *Internal Control – Integrated Framework (2013)* issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on that evaluation, management concluded that the Company’s internal control over financial reporting was effective as of December 31, 2025.

Deloitte & Touche LLP, an independent registered public accounting firm, has audited the Company’s internal control over financial reporting as of December 31, 2025 in accordance with the standards of the Public Company Accounting Oversight Board (PCAOB). Those standards require that Deloitte & Touche LLP plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Deloitte & Touche LLP has issued an attestation report on the Company’s internal control over financial reporting as of December 31, 2025, which is included in Item 8 of this Annual Report.

Filed Feb 11, 2026.
Source: SEC EDGAR, the filing index for accession 0001104659-26-013549. Last ingested by Listed: Nov 3, 2026, 18:42 ET. No prices; not investment advice.