Nstar Electric Co: Form 10-Q for the period ended Jun 30, 2026

The following table discloses purchases of our common shares made by us or on our behalf for the periods shown below. The common shares purchased consist of open market purchases made by the Company or an independent agent. These share transactions related to matching contributions under the Eversource 401k Plan.

Market Risk Information

Commodity Price Risk Management: Our regulated companies enter into energy contracts to serve our customers, and the economic impacts of those contracts are passed on to our customers. Accordingly, the regulated companies have no exposure to loss of future earnings or fair values due to these market risk-sensitive instruments. Eversource's Energy Supply Risk Committee, comprised of senior officers, reviews and approves all large-scale energy-related transactions entered into by its regulated companies.

Other Risk Management Activities

Interest Rate Risk Management: Interest rate risk is associated with changes in interest rates for our outstanding long-term debt. Our interest rate risk is significantly reduced as typically all or most of our debt financings have fixed interest rates. As of June 30, 2026, all of our long-term debt was at a fixed interest rate.

Credit Risk Management: Credit risk relates to the risk of loss that we would incur as a result of non-performance by counterparties pursuant to the terms of our contractual obligations. We serve a wide variety of customers and transact with suppliers that include IPPs, industrial companies, natural gas and electric utilities, oil and natural gas producers, financial institutions, and other energy marketers. Margin accounts exist within this diverse group, and we realize interest receipts and payments related to balances outstanding in these margin accounts. This wide customer and supplier mix generates a need for a variety of contractual structures, products and terms that, in turn, require us to manage the portfolio of market risk inherent in those transactions in a manner consistent with the parameters established by our risk management process.

Our regulated companies are subject to credit risk from certain long-term or high-volume supply contracts with energy marketing companies. Our regulated companies manage the credit risk with these counterparties in accordance with established credit risk practices and monitor contracting risks, including credit risk. As of June 30, 2026, our regulated companies held collateral (letters of credit or cash) of $12.7 million from counterparties related to our standard service contracts. As of June 30, 2026, Eversource had $18.6 million of cash posted with ISO-NE related to energy transactions.

We have provided additional disclosures regarding interest rate risk management and credit risk management in Part II, Item 7A, "Quantitative and Qualitative Disclosures about Market Risk," in Eversource's 2025 Form 10-K, which is incorporated herein by reference. There have been no additional risks identified and no material changes with regard to the items previously disclosed in the Eversource 2025 Form 10-K.

Management, on behalf of Eversource, CL&P, NSTAR Electric and PSNH, evaluated the design and operation of the disclosure controls and procedures as of June 30, 2026 to determine whether they are effective in ensuring that the disclosure of required information is made timely and in accordance with the Securities Exchange Act of 1934 and the rules and regulations of the SEC. This evaluation was made under management's supervision and with management's participation, including the principal executive officer and principal financial officer as of the end of the period covered by this Quarterly Report on Form 10-Q. There are inherent limitations of disclosure controls and procedures, including the possibility of human error and the circumventing or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives. The principal executive officer and principal financial officer have concluded, based on their review, that the disclosure controls and procedures of Eversource, CL&P, NSTAR Electric and PSNH are effective to ensure that information required to be disclosed by us in reports filed under the Securities Exchange Act of 1934 (i) is recorded, processed, summarized, and reported within the time periods specified in SEC rules and regulations and (ii) is accumulated and communicated to management, including the principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosures.

There have been no changes in internal controls over financial reporting for Eversource, CL&P, NSTAR Electric and PSNH during the quarter ended June 30, 2026 that have materially affected, or are reasonably likely to materially affect, internal controls over financial reporting.

We are subject to a variety of significant risks in addition to the matters set forth under our forward-looking statements section in Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations," of this Quarterly Report on Form 10-Q. We have identified a number of these risk factors in Part I, Item 1A, "Risk Factors," in our 2025 Form 10-K, which risk factors are incorporated herein by reference. These risk factors should be considered carefully in evaluating our risk profile. The following risk factor update should be read in conjunction with the risk factors described in the 2025 Form 10-K.

Eversource and other transmission-owning electric companies within ISO-NE have been subject to complaints challenging the reasonableness of our allowed ROEs since 2011. On March 19, 2026, FERC issued an order finding that the base ROE was unjust and unreasonable and setting a new base ROE for the first complaint period and prospectively from October 2014. FERC ordered refunds with interest for those historical refund periods, which are material to us, and dismissed the other three complaints. The material amount of the refunds required by FERC’s order is driven primarily by the length of the retroactive refund period, which spans nearly 12 years. The application of the revised base ROE to revenues collected over this extended historical period substantially increased the aggregate refund obligation compared to what would have resulted from a shorter refund period. The order adversely affects our financial position, results of operations, and cash flows, particularly if we seek rehearing or appeal and are unsuccessful, and creates risks regarding our ability to secure acceptable ROEs in future FERC proceedings. See "FERC Regulatory Matters - FERC ROE Complaints," in the accompanying Management's Discussion and Analysis of Financial Condition and Results of Operations and Note 9C, “Commitments and Contingencies - FERC ROE Complaints,” to the financial statements for additional information regarding the financial impact of this order.

Other than as set forth above, there have been no additional risk factors identified and no material changes with regard to the risk factors previously disclosed in our 2025 Form 10-K.