Mark C. Fuller, Insider at Castellum, Inc. (CTM), sold 500,000 shares at $1.12 ($560K) on 2025-09-03, disclosed to the SEC on 2025-09-03.
Open-market sale of $560k CTM by Insider. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| CTM | BUY | 2023-06-14 | $650 | — | Filing → |
| CTM | BUY | 2022-12-09 | — | — | Filing → |
| CTM | BUY | 2022-12-02 | — | — | Filing → |