David T. Bell, Chief Financial Officer at Castellum, Inc. (CTM), bought 1,396 shares at $0.54 ($747) on 2026-10-01, disclosed to the SEC on 2026-10-01.
Open-market purchase of $747 CTM by Chief Financial Officer. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade B.
Something here stands out, but not much.
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| CTM | SELL | 2022-11-29 | — | — | Filing → |