Over 12 months, Castellum, Inc. saw more selling than buying from its insiders — purchases of about $49,000 against sales of $769,000.
The largest purchase came from Merriman Andrew (COO), about $25,000. C-suite participation is part of the picture here.
On the institutional side, 35 funds reported holding CTM at the end of Q2 2026, and more funds bought than sold. Quarter by quarter: Last full quarter: net buying by insiders. Insiders bought in 2 of the last 7 full quarters.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Bell David T | CFO | Buy | 1,396 | $0.54 | $747 | SEC |
| Oct 1, 2026 | Merriman Andrew | COO | Buy | 1,396 | $0.54 | $747 | SEC |
| Oct 1, 2026 | MARTIN TAMMY L | Executive Officer | Buy | 1,396 | $0.54 | $747 | SEC |
| Oct 1, 2026 | Ives Glen R | President | Buy | 1,700 | $0.54 | $910 | SEC |
| Sep 9, 2026 | Merriman Andrew | COO | Buy | 40,000 | $0.62 | $25K | SEC |
| Sep 9, 2026 | Merriman Andrew | COO | Buy | 10,000 | $0.62 | $6K | SEC |
| Jul 2, 2026 | Merriman Andrew | COO | Buy | 1,202 | $0.61 | $733 | SEC |
| Jul 2, 2026 | Bell David T | CFO | Buy | 1,202 | $0.61 | $733 | SEC |
| Jul 2, 2026 | MARTIN TAMMY L | Executive Officer | Buy | 1,202 | $0.61 | $733 | SEC |
| Jul 2, 2026 | Ives Glen R | President | Buy | 1,262 | $0.61 | $770 | SEC |
| Mar 27, 2026 | McMillen Charles Thomas | Director | Sell | 30,000 | $0.70 | $21K | SEC |
| Mar 27, 2026 | Ives Glen R | President | Buy | 2,000 | $0.62 | $1K | SEC |
| Mar 27, 2026 | Merriman Andrew | COO | Buy | 2,000 | $0.64 | $1K | SEC |
| Mar 26, 2026 | Ives Glen R | President | Buy | 10,000 | $0.66 | $7K | SEC |
| Mar 20, 2026 | McMillen Charles Thomas | Director | Sell | 55,000 | $0.80 | $44K | SEC |
In the last 12 months Castellum, Inc. insiders made open-market purchases worth about $49,000 and sales worth about $769,000. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in CTM was filed on 2026-10-01.
35 investment managers reported holding CTM in SEC Form 13F filings for Q2 2026.
No congressional trades in CTM were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).