KRRO insider trading — Korro Bio, Inc.
Over the last 90 days, insiders at Korro Bio, Inc. (KRRO) made 2 open-market purchases worth $79K and 1 open-market sale worth $63K, making them net buyers by $16K. The largest purchase was by Lynx1 Capital Management Lp, Nichols Weston (10% Owner), who bought 5,222 shares for $60K on Aug 6, 2026. The largest sale was by Aiyar Ram (President and CEO), who sold 5,802 shares for $63K on Aug 4, 2026.
Updated Oct 16, 2026.
Recent KRRO insider transactions
Every Form 4 filed by Korro Bio, Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | Formela Jean Francois | Director | S · Sale · 10b5-1 | Indirect | 38,490 | $14.12 | $543K | Form 4 |
| Sep 11, 2026 | Formela Jean Francois | Director | S · Sale · 10b5-1 | Indirect | 10,200 | $13.99 | $143K | Form 4 |
| Sep 11, 2026 | Dolan Oliver | Senior Vice President, Finance | S · Sale · 10b5-1 | Direct | 5 | $13.72 | $69 | Form 4 |
| Sep 9, 2026 | Dolan Oliver | Senior Vice President, Finance | S · Sale · 10b5-1 | Direct | 6 | $13.60 | $82 | Form 4 |
| Sep 8, 2026 | Dolan Oliver | Senior Vice President, Finance | S · Sale · 10b5-1 | Direct | 7,347 | $13.51 | $99K | Form 4 |
| Aug 26, 2026 | Formela Jean Francois | Director | S · Sale · 10b5-1 | Indirect | 300 | $13.96 | $4K | Form 4 |
| Aug 19, 2026 | Formela Jean Francois | Director | S · Sale · 10b5-1 | Indirect | 28,468 | $14.00 | $399K | Form 4 |
| Aug 11, 2026 | Formela Jean Francois | Director | S · Sale · 10b5-1 | Indirect | 2,143 | $13.96 | $30K | Form 4 |
| Aug 10, 2026 | Lynx1 Capital Management Lp, Nichols Weston | 10% Owner | P · Purchase | Indirect | 1,462 | $13.19 | $19K | Form 4 |
| Aug 6, 2026 | Lynx1 Capital Management Lp, Nichols Weston | 10% Owner | P · Purchase | Indirect | 5,222 | $11.40 | $60K | Form 4 |
| Aug 4, 2026 | Aiyar Ram | President and CEO | S · Sale | Direct | 5,802 | $10.84 | $63K | Form 4 |
KRRO insider trading FAQ
Are insiders buying KRRO stock?
Yes. In the last 90 days, Korro Bio, Inc. insiders made 2 open-market purchases totaling $79K, and 1 open-market sale totaling $63K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading KRRO?
Recent buyers: Lynx1 Capital Management Lp, Nichols Weston. Recent sellers: Aiyar Ram.
Where does KRRO insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.