Charles Thomas McMillen sold $44k of CTM
director at Castellum, Inc.. 55,000 shares at an average of $0.80, traded Mar 18, 2026, filed Mar 20, 2026.
Score components
- +15RoleDirector
- +6Trade size$44k at market
- +5Share of holdings soldSold 17% of holdings
- 0ClusterNo other insider selling within 14 days
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 -2.5%, 3m +10.5%, 6m -18.7%.
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 0001877939-26-000020, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 18, 2026 | SOpen-market sale Common Stock | -55,000 | $0.80 | $44k | 261,015 | Mar 20, 2026 |
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% | |
| 48Moderate | Castellum, Inc. | David T Bell Chief Financial Officer | $736 1,202 shares | +7% | |
| 38Weak | Castellum, Inc. | Glen R Ives President | $772 1,262 shares | +1% | |
| 41Moderate | Castellum, Inc. | Tammy L Martin General Counsel and Secretary | $736 1,202 shares | +9% | |
| 38Weak | Castellum, Inc. | Andrew Merriman Chief Operating Officer | $736 1,202 shares | +0% | |
| 20Weak | CTMsell Castellum, Inc. | Charles Thomas McMillen director | $21k 30,000 shares | -11% |
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.