Listed

Castellum, Inc.

CTMNYSECIK 1877939IndustrialsFiscal year ends Dec 31

Latest reported revenue, Q2 FY2026$13.9mRevenue, Q2 FY2026, three months to 2026-06-30$13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figureThree months to Jun 30, 2026, from the 10-Q filed Aug 6, 2026.

Latest quarter: Q2 FY2026

Three months to Jun 30, 2026, against the same quarter a year earlier.

  • Revenue$13.9mRevenue, Q2 FY2026, three months to 2026-06-30$13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure−1.1% on a year earlier
  • Gross margin34.0%Gross margin, Q2 FY2026, three months to 2026-06-30. gross profit / revenueGross profit: $4.7m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure−2.0 pts on a year earlier
  • Operating margin−7.9%Operating margin, Q2 FY2026, three months to 2026-06-30. operating income / revenueOperating income: −$1.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure−5.2 pts on a year earlier
  • Net margin−7.4%Net margin, Q2 FY2026, three months to 2026-06-30. net income / revenueNet income: −$1.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure−5.1 pts on a year earlier
  • Diluted EPS−$0.01Diluted EPS, Q2 FY2026, three months to 2026-06-30−$0.01 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figureSign changed from a year earlier
  • Free cash flow$1.0mFree cash flow, Q2 FY2026, three months to 2026-06-30. operating cash flow − capital expenditureOperating cash flow: $1.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Capital expenditure: $17.5k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Report this figure+791.2% on a year earlier

Last eight quarters

Full statements
Revenue$13.9mGross margin 34.0%
Diluted EPS−$0.01, Q2 FY2026
Free cash flow$1.0m, Q2 FY2026
Castellum, Inc., key figures for the last eight quarters
Line itemUnitQ3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30Shape over the periods
Revenue$m11.6Revenue, Q3 FY2024, three months to 2024-09-30$11.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure10.3Revenue, Q4 FY2024, three months to 2024-12-31$10.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure11.7Revenue, Q1 FY2025, three months to 2025-03-31$11.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure14.0Revenue, Q2 FY2025, three months to 2025-06-30$14.0m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure14.6Revenue, Q3 FY2025, three months to 2025-09-30$14.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure12.6Revenue, Q4 FY2025, three months to 2025-12-31$12.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure14.3Revenue, Q1 FY2026, three months to 2026-03-31$14.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure13.9Revenue, Q2 FY2026, three months to 2026-06-30$13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure
Gross margin%42.7%Gross margin, Q3 FY2024, three months to 2024-09-30. gross profit / revenueGross profit: $5.0m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $11.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure40.0%Gross margin, Q4 FY2024, three months to 2024-12-31. gross profit / revenueGross profit: $4.1m. XBRL concept us-gaap:GrossProfit. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $10.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure39.0%Gross margin, Q1 FY2025, three months to 2025-03-31. gross profit / revenueGross profit: $4.6m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $11.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure36.1%Gross margin, Q2 FY2025, three months to 2025-06-30. gross profit / revenueGross profit: $5.1m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $14.0m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure37.6%Gross margin, Q3 FY2025, three months to 2025-09-30. gross profit / revenueGross profit: $5.5m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $14.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure33.9%Gross margin, Q4 FY2025, three months to 2025-12-31. gross profit / revenueGross profit: $4.3m. XBRL concept us-gaap:GrossProfit. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $12.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure35.4%Gross margin, Q1 FY2026, three months to 2026-03-31. gross profit / revenueGross profit: $5.1m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $14.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure34.0%Gross margin, Q2 FY2026, three months to 2026-06-30. gross profit / revenueGross profit: $4.7m. XBRL concept us-gaap:GrossProfit. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure
Operating margin%(11.9%)Operating margin, Q3 FY2024, three months to 2024-09-30. operating income / revenueOperating income: −$1.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $11.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure(15.7%)Operating margin, Q4 FY2024, three months to 2024-12-31. operating income / revenueOperating income: −$1.6m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $10.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure(12.7%)Operating margin, Q1 FY2025, three months to 2025-03-31. operating income / revenueOperating income: −$1.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $11.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure(2.7%)Operating margin, Q2 FY2025, three months to 2025-06-30. operating income / revenueOperating income: −$383.5k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $14.0m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure3.0%Operating margin, Q3 FY2025, three months to 2025-09-30. operating income / revenueOperating income: $445.3k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $14.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure(11.1%)Operating margin, Q4 FY2025, three months to 2025-12-31. operating income / revenueOperating income: −$1.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $12.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure(4.9%)Operating margin, Q1 FY2026, three months to 2026-03-31. operating income / revenueOperating income: −$698.0k. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $14.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure(7.9%)Operating margin, Q2 FY2026, three months to 2026-06-30. operating income / revenueOperating income: −$1.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure
Net margin%(11.0%)Net margin, Q3 FY2024, three months to 2024-09-30. net income / revenueNet income: −$1.3m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $11.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure(26.6%)Net margin, Q4 FY2024, three months to 2024-12-31. net income / revenueNet income: −$2.7m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $10.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure(10.0%)Net margin, Q1 FY2025, three months to 2025-03-31. net income / revenueNet income: −$1.2m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $11.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure(2.3%)Net margin, Q2 FY2025, three months to 2025-06-30. net income / revenueNet income: −$322.1k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $14.0m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure2.8%Net margin, Q3 FY2025, three months to 2025-09-30. net income / revenueNet income: $415.4k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Revenue: $14.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figure(10.5%)Net margin, Q4 FY2025, three months to 2025-12-31. net income / revenueNet income: −$1.3m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Revenue: $12.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure(2.5%)Net margin, Q1 FY2026, three months to 2026-03-31. net income / revenueNet income: −$351.3k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Revenue: $14.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure(7.4%)Net margin, Q2 FY2026, three months to 2026-06-30. net income / revenueNet income: −$1.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Revenue: $13.9m. XBRL concept us-gaap:Revenues. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure
Diluted EPS$ per share(0.02)Diluted EPS, Q3 FY2024, three months to 2024-09-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figurenot reported (Diluted EPS not reported)(0.01)Diluted EPS, Q1 FY2025, three months to 2025-03-31−$0.01 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure0.00Diluted EPS, Q2 FY2025, three months to 2025-06-30$0.00 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure0.00Diluted EPS, Q3 FY2025, three months to 2025-09-30$0.00 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-07, accession 0001877939-25-000115.Report this figurenot reported (Diluted EPS not reported)0.00Diluted EPS, Q1 FY2026, three months to 2026-03-31$0.00 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure(0.01)Diluted EPS, Q2 FY2026, three months to 2026-06-30−$0.01 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001877939-26-000070.Report this figure
Free cash flow$m0.7Free cash flow, Q3 FY2024, three months to 2024-09-30. operating cash flow − capital expenditureOperating cash flow: $742.2k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-07, accession 0001877939-25-000115. Derived: 9-month figure less the 6-month figure.Capital expenditure: $3.3k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-07, accession 0001877939-25-000115. Derived: 9-month figure less the 6-month figure.Report this figure(0.4)Free cash flow, Q4 FY2024, three months to 2024-12-31. operating cash flow − capital expenditureOperating cash flow: −$394.4k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Capital expenditure: $0. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure(2.5)Free cash flow, Q1 FY2025, three months to 2025-03-31. operating cash flow − capital expenditureOperating cash flow: −$2.5m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Capital expenditure: $0. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure0.1Free cash flow, Q2 FY2025, three months to 2025-06-30. operating cash flow − capital expenditureOperating cash flow: $214.2k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Capital expenditure: $97.2k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Report this figure1.0Free cash flow, Q3 FY2025, three months to 2025-09-30. operating cash flow − capital expenditureOperating cash flow: $1.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-07, accession 0001877939-25-000115. Derived: 9-month figure less the 6-month figure.Capital expenditure: $44.7k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-07, accession 0001877939-25-000115. Derived: 9-month figure less the 6-month figure.Report this figure(0.7)Free cash flow, Q4 FY2025, three months to 2025-12-31. operating cash flow − capital expenditureOperating cash flow: −$661.7k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Capital expenditure: $9.8k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-09, accession 0001877939-26-000016. Derived: 12-month figure less the 9-month figure.Report this figure1.3Free cash flow, Q1 FY2026, three months to 2026-03-31. operating cash flow − capital expenditureOperating cash flow: $1.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Capital expenditure: $9.7k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001877939-26-000033.Report this figure1.0Free cash flow, Q2 FY2026, three months to 2026-06-30. operating cash flow − capital expenditureOperating cash flow: $1.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Capital expenditure: $17.5k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001877939-26-000070. Derived: 6-month figure less the 3-month figure.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Last five fiscal years

Revenue$52.9mGross margin 36.6%
Diluted EPS−$0.03, FY2025
Free cash flow−$2.1m, FY2025
Castellum, Inc., key figures for the last five fiscal years
Line itemUnitFY2021-12-31FY20222022-12-31FY20232023-12-31FY20242024-12-31FY20252025-12-31Shape over the periods
Revenue$m25.1Revenue, period not labelled, twelve months to 2021-12-31$25.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure42.2Revenue, FY2022, twelve months to 2022-12-31$42.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure45.2Revenue, FY2023, twelve months to 2023-12-31$45.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure44.8Revenue, FY2024, twelve months to 2024-12-31$44.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure52.9Revenue, FY2025, twelve months to 2025-12-31$52.9m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure
Gross margin%44.2%Gross margin, period not labelled, twelve months to 2021-12-31. gross profit / revenueGross profit: $11.1m. XBRL concept us-gaap:GrossProfit. 10-K filed 2024-03-21, accession 0001877939-24-000018.Revenue: $25.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure41.7%Gross margin, FY2022, twelve months to 2022-12-31. gross profit / revenueGross profit: $17.6m. XBRL concept us-gaap:GrossProfit. 10-K filed 2025-03-11, accession 0001877939-25-000021.Revenue: $42.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure41.3%Gross margin, FY2023, twelve months to 2023-12-31. gross profit / revenueGross profit: $18.7m. XBRL concept us-gaap:GrossProfit. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $45.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure40.8%Gross margin, FY2024, twelve months to 2024-12-31. gross profit / revenueGross profit: $18.3m. XBRL concept us-gaap:GrossProfit. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $44.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure36.6%Gross margin, FY2025, twelve months to 2025-12-31. gross profit / revenueGross profit: $19.4m. XBRL concept us-gaap:GrossProfit. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $52.9m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure
Operating margin%(30.8%)Operating margin, period not labelled, twelve months to 2021-12-31. operating income / revenueOperating income: −$7.7m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2024-03-21, accession 0001877939-24-000018.Revenue: $25.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure(23.6%)Operating margin, FY2022, twelve months to 2022-12-31. operating income / revenueOperating income: −$10.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2025-03-11, accession 0001877939-25-000021.Revenue: $42.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure(36.8%)Operating margin, FY2023, twelve months to 2023-12-31. operating income / revenueOperating income: −$16.7m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $45.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(16.2%)Operating margin, FY2024, twelve months to 2024-12-31. operating income / revenueOperating income: −$7.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $44.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(5.3%)Operating margin, FY2025, twelve months to 2025-12-31. operating income / revenueOperating income: −$2.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $52.9m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure
Net margin%(30.1%)Net margin, period not labelled, twelve months to 2021-12-31. net income / revenueNet income: −$7.5m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2024-03-21, accession 0001877939-24-000018.Revenue: $25.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure(35.3%)Net margin, FY2022, twelve months to 2022-12-31. net income / revenueNet income: −$14.9m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2025-03-11, accession 0001877939-25-000021.Revenue: $42.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure(39.3%)Net margin, FY2023, twelve months to 2023-12-31. net income / revenueNet income: −$17.8m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $45.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(22.3%)Net margin, FY2024, twelve months to 2024-12-31. net income / revenueNet income: −$10.0m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $44.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(4.5%)Net margin, FY2025, twelve months to 2025-12-31. net income / revenueNet income: −$2.4m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-03-09, accession 0001877939-26-000016.Revenue: $52.9m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure
Diluted EPS$ per share(0.41)Diluted EPS, period not labelled, twelve months to 2021-12-31−$0.41 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure(0.55)Diluted EPS, FY2022, twelve months to 2022-12-31−$0.55 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure(0.38)Diluted EPS, FY2023, twelve months to 2023-12-31−$0.38 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(0.18)Diluted EPS, FY2024, twelve months to 2024-12-31−$0.18 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(0.03)Diluted EPS, FY2025, twelve months to 2025-12-31−$0.03 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure
Free cash flow$m(1.4)Free cash flow, period not labelled, twelve months to 2021-12-31. operating cash flow − capital expenditureOperating cash flow: −$1.4m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2024-03-21, accession 0001877939-24-000018.Capital expenditure: $10.2k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2024-03-21, accession 0001877939-24-000018.Report this figure0.9Free cash flow, FY2022, twelve months to 2022-12-31. operating cash flow − capital expenditureOperating cash flow: $990.2k. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2025-03-11, accession 0001877939-25-000021.Capital expenditure: $89.3k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2025-03-11, accession 0001877939-25-000021.Report this figure(2.3)Free cash flow, FY2023, twelve months to 2023-12-31. operating cash flow − capital expenditureOperating cash flow: −$2.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-09, accession 0001877939-26-000016.Capital expenditure: $18.3k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure1.1Free cash flow, FY2024, twelve months to 2024-12-31. operating cash flow − capital expenditureOperating cash flow: $1.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-09, accession 0001877939-26-000016.Capital expenditure: $3.3k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure(2.1)Free cash flow, FY2025, twelve months to 2025-12-31. operating cash flow − capital expenditureOperating cash flow: −$1.9m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-03-09, accession 0001877939-26-000016.Capital expenditure: $151.7k. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-03-09, accession 0001877939-26-000016.Report this figure

Focus or hover a figure to see its XBRL concept, period and filing; each links to that filing. A figure marked d is derived: a quarter computed from year-to-date figures, such as the fourth quarter as the fiscal year less the nine months before it. A ratio reads not reported when any input is missing.

Insider purchases and sales

All insider transactions

The last 20 open-market transactions reported on Form 4 (codes P and S). The reported price is the price per share the insider stated on the form: filing data, not a market price.

No open-market purchases or sales by insiders are in coverage from Nov 2024 to Oct 2026.

No open-market purchases or sales by insiders are in coverage for this company.

Funds that report holding it

All funds

From each manager's latest Form 13F, largest reported value first. Reported value is as filed at the quarter end: filing data, not a price. A put or call is an option position, not shares held.

Funds that report holding Castellum, Inc.
FundQuarter endedReported valueSharesPut or callChange on the quarter before
VANGUARD CAPITAL MANAGEMENT LLC2026-06-30$2.2m3,093,768Added+12,511
Meridian Wealth Management, LLC2026-06-30$621.4k863,200Added+77,400
GEODE CAPITAL MANAGEMENT, LLC2026-06-30$587.6k816,037Reduced−128,862
CAPTRUST FINANCIAL ADVISORS2026-06-30$450.7k626,100Unchanged
VANGUARD FIDUCIARY TRUST CO2026-06-30$354.8k492,717Added+74,393
STATE STREET CORP2026-06-30$218.8k303,900Unchanged
BlackRock, Inc.2026-06-30$191.1k265,486Unchanged
Savvy Advisors, Inc.2026-06-30$158.6k220,300Reduced−1,500
UBS Group AG2026-06-30$150.4k208,958Added+55,429
NORTHERN TRUST CORP2026-06-30$123.4k171,420Reduced−10,482

Recent filings

All 309 filings

Reports and events: 10-K, 10-Q, 8-K, proxy statements and ownership schedules.

Castellum, Inc., recent filings
FiledFormWhat it isAccession number
2026-10-1316:14 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000089
2026-09-0916:02 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000078
2026-08-3116:03 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000075
2026-08-0716:05 ET8-K2.02 Results of operations; 9.01 Financial statements and exhibits0001877939-26-000073
2026-08-0616:09 ET10-QQuarterly reportPeriod 2026-06-300001877939-26-000070
2026-07-3116:01 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000065
2026-07-0216:02 ET8-K1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits0001877939-26-000057
2026-06-2416:02 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000052
2026-06-1516:15 ET8-K8.01 Other events; 9.01 Financial statements and exhibits0001877939-26-000050
2026-05-2016:01 ET8-K5.07 Shareholder vote results0001877939-26-000044

Latest annual report

Form 10-K for the fiscal year ended Dec 31, 2025Filed Mar 9, 2026. Its page lists the documents and the extracted sections, such as Business and Risk factors.

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

About the filer

CIK
1877939
Tickers
CTM
Exchange
NYSE
SIC code
8742 Services-Management Consulting Services
Sector
Industrials
Fiscal year ends
Dec 31
Incorporated in
NV
Filer category
<br>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. Listed shows no prices and gives no investment advice.