Mark Martinelli bought $18k of CBNA
director at CHAIN BRIDGE BANCORP INC. 400 shares at an average of $44.00, traded Jul 29, 2026, filed Jul 31, 2026.
Score components
- +15RoleDirector
- 0Trade size$18k at market
- +3Relative to holdingsHoldings up 15%
- 0Price contextNear the top of the 52-week range
- 0ClusterNo other insider 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 0001393085-26-000003, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jul 29, 2026 | POpen-market purchase Class A Common Stock | +400 | $44.00 | $18k | 3,000 | Jul 31, 2026 |
Related signals
Other insiders at CHAIN BRIDGE BANCORP INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 33Weak | CHAIN BRIDGE BANCORP INC | Leigh-Alexandra Basha director | $14k 400 shares | +50% | |
| 38Weak | CHAIN BRIDGE BANCORP INC | Leigh-Alexandra Basha director | $12k 400 shares | +100% | |
| 23Weak | CBNAbuy CHAIN BRIDGE BANCORP INC | Leigh-Alexandra Basha director | $24k 800 shares | - | |
| 34Weak | CHAIN BRIDGE BANCORP INC | James R. Pollock Corporate Development Officer | $25k 714 shares | +23% | |
| 28Weak | CBNAsell CHAIN BRIDGE BANCORP INC | Benita Thompson-Byas director | $71k 2,000 shares | -11% | |
| 29Weak | CHAIN BRIDGE BANCORP INC | Mark Martinelli director | $12k 430 shares | +21% | |
| 25Weak | CBNAbuy CHAIN BRIDGE BANCORP INC | Leigh-Alexandra Basha director | $12k 400 shares | +235% | |
| 23Weak | CBNAbuy CHAIN BRIDGE BANCORP INC | Leigh-Alexandra Basha director | $12k 400 shares | - | |
| 35Weak | CBNAsell CHAIN BRIDGE BANCORP INC | Martin S. Friedman owner | $868k 32,158 shares | -10% | |
| 30Weak | CBNAbuy CHAIN BRIDGE BANCORP INC | Martin S. Friedman owner | $628k 25,796 shares | +8% |
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.