Andrew Merriman, Chief Operating Officer at Castellum, Inc. (CTM), bought 6,000 shares at $0.80 ($5K) on 2026-03-18, disclosed to the SEC on 2026-03-18.
Open-market purchase of $5k 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 | $0.80 | 3,000 | $2K | 49.9% |
| 2 | $0.80 | 3,000 | $2K | 50.1% |
| Total | $0.80 avg | 6,000 | $5K | 100% |
| Filing → |
| CTM | BUY | 2026-07-02 | $736 | — | Filing → |
| CTM | BUY | 2026-03-27 | $3K | — | Filing → |