# Castellum, Inc.: overview CTM · NYSE · CIK 1877939 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/ctm.md) · [Financials](/companies/ctm/financials.md) · [Filings](/companies/ctm/filings.md) · [Insiders](/companies/ctm/insiders.md) Latest reported revenue: [$13.9m](/filings/0001877939-26-000070.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 6, 2026 (XBRL us-gaap:Revenues, accession 0001877939-26-000070). ## Last eight quarters | Line item | Unit | Q3 FY2024 (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [11.6](/filings/0001877939-25-000115.md) | [10.3 d](/filings/0001877939-26-000016.md) | [11.7](/filings/0001877939-26-000033.md) | [14.0](/filings/0001877939-26-000070.md) | [14.6](/filings/0001877939-25-000115.md) | [12.6 d](/filings/0001877939-26-000016.md) | [14.3](/filings/0001877939-26-000033.md) | [13.9](/filings/0001877939-26-000070.md) | | Gross margin | % | [42.7%](/filings/0001877939-25-000115.md) | [40.0% d](/filings/0001877939-26-000016.md) | [39.0%](/filings/0001877939-26-000033.md) | [36.1%](/filings/0001877939-26-000070.md) | [37.6%](/filings/0001877939-25-000115.md) | [33.9% d](/filings/0001877939-26-000016.md) | [35.4%](/filings/0001877939-26-000033.md) | [34.0%](/filings/0001877939-26-000070.md) | | Operating margin | % | [(11.9%)](/filings/0001877939-25-000115.md) | [(15.7%) d](/filings/0001877939-26-000016.md) | [(12.7%)](/filings/0001877939-26-000033.md) | [(2.7%)](/filings/0001877939-26-000070.md) | [3.0%](/filings/0001877939-25-000115.md) | [(11.1%) d](/filings/0001877939-26-000016.md) | [(4.9%)](/filings/0001877939-26-000033.md) | [(7.9%)](/filings/0001877939-26-000070.md) | | Net margin | % | [(11.0%)](/filings/0001877939-25-000115.md) | [(26.6%) d](/filings/0001877939-26-000016.md) | [(10.0%)](/filings/0001877939-26-000033.md) | [(2.3%)](/filings/0001877939-26-000070.md) | [2.8%](/filings/0001877939-25-000115.md) | [(10.5%) d](/filings/0001877939-26-000016.md) | [(2.5%)](/filings/0001877939-26-000033.md) | [(7.4%)](/filings/0001877939-26-000070.md) | | Diluted EPS | $ per share | [(0.02)](/filings/0001877939-25-000115.md) | not reported | [(0.01)](/filings/0001877939-26-000033.md) | [0.00](/filings/0001877939-26-000070.md) | [0.00](/filings/0001877939-25-000115.md) | not reported | [0.00](/filings/0001877939-26-000033.md) | [(0.01)](/filings/0001877939-26-000070.md) | | Free cash flow | $m | [0.7 d](/filings/0001877939-25-000115.md) | [(0.4) d](/filings/0001877939-26-000016.md) | [(2.5)](/filings/0001877939-26-000033.md) | [0.1 d](/filings/0001877939-26-000070.md) | [1.0 d](/filings/0001877939-25-000115.md) | [(0.7) d](/filings/0001877939-26-000016.md) | [1.3](/filings/0001877939-26-000033.md) | [1.0 d](/filings/0001877939-26-000070.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [25.1](/filings/0001877939-24-000018.md) | [42.2](/filings/0001877939-25-000021.md) | [45.2](/filings/0001877939-26-000016.md) | [44.8](/filings/0001877939-26-000016.md) | [52.9](/filings/0001877939-26-000016.md) | | Gross margin | % | [44.2%](/filings/0001877939-24-000018.md) | [41.7%](/filings/0001877939-25-000021.md) | [41.3%](/filings/0001877939-26-000016.md) | [40.8%](/filings/0001877939-26-000016.md) | [36.6%](/filings/0001877939-26-000016.md) | | Operating margin | % | [(30.8%)](/filings/0001877939-24-000018.md) | [(23.6%)](/filings/0001877939-25-000021.md) | [(36.8%)](/filings/0001877939-26-000016.md) | [(16.2%)](/filings/0001877939-26-000016.md) | [(5.3%)](/filings/0001877939-26-000016.md) | | Net margin | % | [(30.1%)](/filings/0001877939-24-000018.md) | [(35.3%)](/filings/0001877939-25-000021.md) | [(39.3%)](/filings/0001877939-26-000016.md) | [(22.3%)](/filings/0001877939-26-000016.md) | [(4.5%)](/filings/0001877939-26-000016.md) | | Diluted EPS | $ per share | [(0.41)](/filings/0001877939-24-000018.md) | [(0.55)](/filings/0001877939-25-000021.md) | [(0.38)](/filings/0001877939-26-000016.md) | [(0.18)](/filings/0001877939-26-000016.md) | [(0.03)](/filings/0001877939-26-000016.md) | | Free cash flow | $m | [(1.4)](/filings/0001877939-24-000018.md) | [0.9](/filings/0001877939-25-000021.md) | [(2.3)](/filings/0001877939-26-000016.md) | [1.1](/filings/0001877939-26-000016.md) | [(2.1)](/filings/0001877939-26-000016.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/ctm/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $2.2m | 3,093,768 | | Added +12,511 | | [Meridian Wealth Management, LLC](/funds/1697300.md) | 2026-06-30 | $621.4k | 863,200 | | Added +77,400 | | [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $587.6k | 816,037 | | Reduced −128,862 | | [CAPTRUST FINANCIAL ADVISORS](/funds/1512024.md) | 2026-06-30 | $450.7k | 626,100 | | Unchanged | | [VANGUARD FIDUCIARY TRUST CO](/funds/933478.md) | 2026-06-30 | $354.8k | 492,717 | | Added +74,393 | | [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $218.8k | 303,900 | | Unchanged | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $191.1k | 265,486 | | Unchanged | | [Savvy Advisors, Inc.](/funds/2003633.md) | 2026-06-30 | $158.6k | 220,300 | | Reduced −1,500 | | [UBS Group AG](/funds/1610520.md) | 2026-06-30 | $150.4k | 208,958 | | Added +55,429 | | [NORTHERN TRUST CORP](/funds/73124.md) | 2026-06-30 | $123.4k | 171,420 | | Reduced −10,482 | ## Recent filings [All 309 filings](/companies/ctm/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-10-13 | 16:14 ET | [8-K](/filings/0001877939-26-000089.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000089 | | 2026-09-09 | 16:02 ET | [8-K](/filings/0001877939-26-000078.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000078 | | 2026-08-31 | 16:03 ET | [8-K](/filings/0001877939-26-000075.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000075 | | 2026-08-07 | 16:05 ET | [8-K](/filings/0001877939-26-000073.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-26-000073 | | 2026-08-06 | 16:09 ET | [10-Q](/filings/0001877939-26-000070.md) | Quarterly report, period 2026-06-30 | 0001877939-26-000070 | | 2026-07-31 | 16:01 ET | [8-K](/filings/0001877939-26-000065.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000065 | | 2026-07-02 | 16:02 ET | [8-K](/filings/0001877939-26-000057.md) | 1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001877939-26-000057 | | 2026-06-24 | 16:02 ET | [8-K](/filings/0001877939-26-000052.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000052 | | 2026-06-15 | 16:15 ET | [8-K](/filings/0001877939-26-000050.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000050 | | 2026-05-20 | 16:01 ET | [8-K](/filings/0001877939-26-000044.md) | 5.07 Shareholder vote results | 0001877939-26-000044 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001877939-26-000016.md), filed Mar 9, 2026. ## Forecast league Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/47c319f4-5c55-440d-957a-4bd330e34f38) ## About the filer - CIK: 1877939 - Tickers: CTM - Exchange: NYSE - SIC code: 8742 Services-Management Consulting Services - State of incorporation: NV - Filer category:
Emerging growth company Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 29, 2026, 06:56 ET. No prices; not investment advice.