Mark C Fuller sold $560k of CTM
other at Castellum, Inc.. 500,000 shares at an average of $1.12, traded Sep 3, 2025, filed Sep 3, 2025.
Score components
- +8RoleOther
- +19Trade size$560k at market
- 0Share of holdings soldSold 7.6% of holdings
- +8Cluster2 insiders selling within 14 days
- +10Role exitThe filing reports the insider leaving
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -6.1%, 3m -10.5%, 6m -16.6%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001944544-25-000014, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 3, 2025 | SOpen-market sale Common Stock | -500,000 | $1.12 | $560k | 6,113,659 | Sep 3, 2025 |
Related signals
Other insiders at Castellum, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 48Moderate | Castellum, Inc. | David T Bell Chief Financial Officer | $747 1,396 shares | +8% | |
| 38Weak | Castellum, Inc. | Glen R Ives President | $910 1,700 shares | +1% | |
| 43Moderate | Castellum, Inc. | Andrew Merriman Chief Operating Officer | $747 1,396 shares | +0% | |
| 41Moderate | Castellum, Inc. | Tammy L Martin General Counsel and Secretary | $747 1,396 shares | +9% | |
| 28Weak | CTMbuy Castellum, Inc. | Andrew Merriman Chief Operating Officer | $31k 50,000 shares | +9% | |
| 20Weak | CTMsell Castellum, Inc. | Charles Thomas McMillen director | $21k 30,000 shares | -11% | |
| 51Moderate | Castellum, Inc. | Glen R Ives President | $1,231 2,000 shares | +1% | |
| 46Moderate | Castellum, Inc. | Andrew Merriman Chief Operating Officer | $1,285 2,000 shares | +0% | |
| 49Moderate | Castellum, Inc. | Glen R Ives President | $6,649 10,000 shares | +5% | |
| 26Weak | CTMsell Castellum, Inc. | Charles Thomas McMillen director | $44k 55,000 shares | -17% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.