David T Bell bought $747 of CTM
Chief Financial Officer at Castellum, Inc.. 1,396 shares at an average of $0.54, traded Oct 1, 2026, filed Oct 1, 2026.
Score components
- +22RoleCFO
- 0Trade size$747 at market
- +3Relative to holdingsHoldings up 8%
- +8Price context52% below the 52-week high
- +15Cluster4 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
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.
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 0001877939-26-000086, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | POpen-market purchase Common Stock | +1,396 | $0.54 | $747 | 18,651 | 12 d ago |
Related signals
Other insiders at Castellum, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 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% | |
| 51Moderate | Castellum, Inc. | Glen R Ives President | $1,231 2,000 shares | +1% |
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.