Castellum, Inc.
CTMAs of the close on Sep 25, 2026
Price
$0.63
Market cap
$59.6M
P/E (diluted TTM)
—
The fourth quarter's per-share figure could not be confirmed from the annual report
EPS (TTM)
—
The fourth quarter's per-share figure could not be confirmed from the annual report
Dividend yield
—
Dividend records do not yet cover the latest payments
Figures shown here come from public SEC filings. Dates beside each section show the available history.
How Castellum, Inc. Makes Money
Follow each dollar of revenue through to what shareholders keep.
From revenue to net income
Pick a year or quarter. Each band's width is its dollar amount.
Financial Summary
Choose a year or quarter, compare it with the same period a year earlier, and open any row for its full filing history.
Loading financial history…
SEC filings supply these figures; updates after the dates shown are not included. This page includes 6 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated Mar 31, 2026.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Castellum, Inc.'s recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2025-09-03 · Fuller Mark C: Larger than 33 of the 34 other insider sales of Common Stock on file. SEC filing
- 2025-05-19 · Fuller Mark C: Larger than 33 of the 34 other insider sales of Common Stock on file. SEC filing
- 2025-03-05 · Fuller Mark C: Larger than 31 of the 34 other insider sales of Common Stock on file. SEC filing
- 2025-03-05 · WRIGHT JAY O: Larger than 32 of the 34 other insider sales of Common Stock on file. SEC filing
Independent insiders buying near the same time
- 2026-03-26–2026-03-27: 3 event(s) across 2 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing )
- 2023-03-21–2023-03-28: 13 event(s) across 6 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing )
- 2023-03-17–2023-03-24: 13 event(s) across 6 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing )
- 2023-03-15–2023-03-22: 13 event(s) across 6 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing )
- 2023-03-14–2023-03-21: 13 event(s) across 6 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing , filing )
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-03-27 | Merriman Andrew · Chief Operating Officer | Common Stock | P — Open market or private purchase | +2,000 | 0.64 | SEC filing |
| 2026-03-27 | Ives Glen R · President | Common Stock | P — Open market or private purchase | +2,000 | 0.62 | SEC filing |
| 2026-03-26 | Ives Glen R · President | Common Stock | P — Open market or private purchase | +10,000 | 0.66 | SEC filing |
| 2026-03-25 | McMillen Charles Thomas · Director | Common Stock | S — Open market or private sale | −30,000 | 0.70 | SEC filing |
| 2026-03-18 | Merriman Andrew · Chief Operating Officer | Common Stock | P — Open market or private purchase | +3,000 | 0.80 | SEC filing |
| 2026-03-18 | McMillen Charles Thomas · Director | Common Stock | S — Open market or private sale | −55,000 | 0.80 | SEC filing |
| 2025-12-19 | WRIGHT JAY O · General Counsel, Secretary | Common Stock | S — Open market or private sale | −30,000 | 1.05 | SEC filing |
| 2025-12-16 | WRIGHT JAY O · General Counsel, Secretary | Common Stock | S — Open market or private sale | −12,000 | 1.07 | SEC filing |
Showing 8 of 20 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-03-31 | MARTIN TAMMY L · General Counsel and Secretary | Common Stock | A — Grant, award, or other acquisition | +1,329 | SEC filing |
| 2026-03-31 | Merriman Andrew · Chief Operating Officer | Common Stock | A — Grant, award, or other acquisition | +1,329 | SEC filing |
| 2026-03-31 | Bell David T · Chief Financial Officer | Common Stock | A — Grant, award, or other acquisition | +1,329 | SEC filing |
| 2025-11-11 | McMillen Charles Thomas · Director | Stock Options | A — Grant, award, or other acquisition | +100,000 | SEC filing |
| 2025-11-11 | Merriman Andrew · Chief Operating Officer | Stock Options | A — Grant, award, or other acquisition | +275,000 | SEC filing |
| 2025-11-11 | Campbell John Francis · Director | Stock Options | A — Grant, award, or other acquisition | +100,000 | SEC filing |
| 2025-11-11 | Bell David T · Chief Financial Officer | Stock Options | A — Grant, award, or other acquisition | +225,000 | SEC filing |
| 2025-11-11 | Ives Glen R · President | Stock Options | A — Grant, award, or other acquisition | +500,000 | SEC filing |
Showing 8 of 20 rows
Other activity
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2025-05-19 | WRIGHT JAY O · General Counsel, Secretary | Common Stock | J — Other acquisition or disposition | −240,600 | SEC filing |
| 2025-03-05 | Fuller Mark C · Director, 10% owner | Common Stock | J — Other acquisition or disposition | −50,000 | SEC filing |
| 2025-01-31 | WRIGHT JAY O · General Counsel, Secretary | Common Stock | J — Other acquisition or disposition | +101 | SEC filing |
| 2024-12-31 | WRIGHT JAY O · General Counsel, Secretary | Common Stock | J — Other acquisition or disposition | −2,800 | SEC filing |
| 2024-02-23 | Buckhout Laurie M · 10% owner | Convertible Promissory Note | J — Other acquisition or disposition | +0 | SEC filing |
Showing 5 of 5 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.