Andrew Merriman, Chief Operating Officer at Castellum, Inc. (CTM), bought 4,000 shares at $0.64 ($3K) on 2026-03-27, disclosed to the SEC on 2026-03-27.
Open-market purchase of $3k CTM by Chief Operating Officer. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $0.64 | 2,000 | $1K | 49.9% |
| 2 | $0.64 | 2,000 | $1K | 50.1% |
| Total | $0.64 avg | 4,000 | $3K | 100% |
| Filing → |
| CTM | BUY | 2026-07-02 | $736 | — | Filing → |
| CTM | BUY | 2026-03-18 | $5K | — | Filing → |