Jean Francois Formela sold $686k of KRRO
director at Korro Bio, Inc.. 48,690 shares at an average of $14.09, traded Sep 11, 2026, filed Sep 15, 2026.
Score components
- +15RoleDirector
- +21Trade size$686k at market
- 0Share of holdings soldSold 7.2% of holdings
- +8Cluster2 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
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.
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 0001030575-26-000014, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | SOpen-market sale Common Stockindirect: See footnote10b5-1 | -8,450 | $13.99 | $118k | 672,498 | 27 d ago |
| Sep 11, 2026 | SOpen-market sale Common Stockindirect: See footnote10b5-1 | -1,750 | $13.99 | $24k | 139,252 | 27 d ago |
| Sep 14, 2026 | SOpen-market sale Common Stockindirect: See footnote10b5-1 | -31,888 | $14.12 | $450k | 640,610 | 27 d ago |
| Sep 14, 2026 | SOpen-market sale Common Stockindirect: See footnote10b5-1 | -6,602 | $14.12 | $93k | 132,650 | 27 d ago |
Related signals
Other insiders at Korro Bio, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 3Weak | Korro Bio, Inc. | Oliver Dolan Senior Vice President, Finance | $69 5 shares | -0% | |
| 23Weak | Korro Bio, Inc. | Oliver Dolan Senior Vice President, Finance | $99k 7,353 shares | -31% | |
| 14Weak | Korro Bio, Inc. | Vineet Agarwal Chief Financial Officer | $56k 800 shares | -100% | |
| 29Weak | Korro Bio, Inc. | Vineet Agarwal Chief Financial Officer | $800k 10,216 shares | -100% |
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.