Korro Bio's three largest insider shareholders as of September 29, 2026 are Capital Management Lp Lynx1 (TenPercentOwner, 1.54Mn shares), Scott D Sandell (TenPercentOwner, 1.30Mn shares), Forest Baskett (TenPercentOwner, 1.30Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Management Lp Lynx1 | TenPercentOwner | 0 | 1,544,980 | 1,544,980 | 10.3% | 13 Aug, 2026 |
| 2 | Scott D Sandell | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 3 | Forest Baskett | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 4 | Edward T Mathers | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 5 | Rick Yang | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 6 | Ali Behbahani | Director, TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 7 | Mohamad Makhzoumi | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 8 | Carmen Chang | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 9 | Enterprise Associates 17, L.P. New | TenPercentOwner | 1,297,893 | 0 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 10 | Paul Edward Walker | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 11 | Anthony A. Jr. Florence | TenPercentOwner | 0 | 1,297,893 | 1,297,893 | 8.6% | 12 Mar, 2026 |
| 12 | Venture Opportunity Fund Ii, L.P. Atlas | TenPercentOwner | 195,074 | 0 | 195,074 | 1.3% | 23 Apr, 2024 |
| 13 | Jean Francois Formela | Director | 0 | 132,650 | 132,650 | 0.9% | 15 Sep, 2026 |
| 14 | Ram Aiyar | President And Ceo | 69,046 | 0 | 69,046 | 0.5% | 05 Aug, 2026 |
| 15 | Jeffrey Cerio | General Counsel | 41,793 | 0 | 41,793 | 0.3% | 17 Jul, 2026 |
| 16 | Loic A Vincent | Chief Scientific Officer | 25,797 | 0 | 25,797 | 0.2% | 17 Jul, 2026 |
| 17 | Todd Chappell | Chief Operating Officer | 24,464 | 0 | 24,464 | 0.2% | 17 Jul, 2026 |
| 18 | David L. Lucchino | President And Ceo | 22,150 | 0 | 22,150 | 0.1% | 27 Nov, 2023 |
| 19 | Oliver Dolan | Senior Vice President, Finance | 16,241 | 0 | 16,241 | 0.1% | 14 Sep, 2026 |
| 20 | Christopher R. Loose | Chief Scientific Officer | 3,673 | 0 | 3,673 | 0.0% | 31 Jul, 2023 |
| 21 | Richard J. Mitrano | Vp Finance Operations | 969 | 0 | 969 | 0.0% | 22 Aug, 2023 |
| 22 | Quentin Mccubbin | Chief Manufacturing Officer | 767 | 0 | 767 | 0.0% | 07 Jul, 2022 |
| 23 | Nessan Bermingham | Director | 702 | 0 | 702 | 0.0% | 07 Nov, 2023 |
| 24 | Carl Lebel | Chief Development Officer | 527 | 0 | 527 | 0.0% | 07 Jul, 2022 |
| 25 | Wendy S Arnold | Chief People Officer | 424 | 0 | 424 | 0.0% | 07 Jul, 2022 |
| 26 | Peter P. Pfreundschuh | Chief Financial Officer | 179 | 0 | 179 | 0.0% | 23 Feb, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 08 Sep, 2026 | Oliver Dolan | Senior Vice President, Finance | Disposed S | 7,347 | $13.51 | $99.29K | 16,252 | Direct |
| 09 Sep, 2026 | Oliver Dolan | Senior Vice President, Finance | Disposed S | 6 | $13.60 | $82 | 16,246 | Direct |
| 26 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 249 | $13.96 | $3.48K | 680,948 | Indirect |
| 26 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 51 | $13.96 | $712 | 141,002 | Indirect |
| 19 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 23,584 | $14.00 | $330.18K | 681,197 | Indirect |
| 19 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 4,884 | $14.00 | $68.38K | 141,053 | Indirect |
| 11 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 1,775 | $13.96 | $24.78K | 704,781 | Indirect |
| 06 Aug, 2026 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 5,222 | $11.40 | $59.53K | 1,543,518 | Indirect |
| 11 Aug, 2026 | Jean Francois Formela | Director | Disposed S | 368 | $13.96 | $5.14K | 145,937 | Indirect |
| 10 Aug, 2026 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 1,462 | $13.19 | $19.28K | 1,544,980 | Indirect |
| 04 Aug, 2026 | Ram Aiyar | President And Ceo | Disposed S | 5,802 | $10.84 | $62.92K | 69,046 | Direct |
| 15 Jul, 2026 | Todd Chappell | Chief Operating Officer | Acquired A | 7,500 | $0.00 | $0 | 24,464 | Direct |
| 15 Jul, 2026 | Jeffrey Cerio | General Counsel | Acquired A | 6,500 | $0.00 | $0 | 41,793 | Direct |
| 15 Jul, 2026 | Oliver Dolan | Senior Vice President, Finance | Acquired A | 5,500 | $0.00 | $0 | 23,599 | Direct |
| 15 Jul, 2026 | Loic A Vincent | Chief Scientific Officer | Acquired A | 7,500 | $0.00 | $0 | 25,797 | Direct |
| 02 Jul, 2026 | Jean Francois Formela | Director | Disposed S | 85,955 | $14.03 | $1.21Mn | 707,373 | Indirect |
| 02 Jul, 2026 | Jean Francois Formela | Director | Disposed S | 14,745 | $14.03 | $206.87K | 154,811 | Indirect |
| 06 Jul, 2026 | Jean Francois Formela | Director | Disposed S | 817 | $13.96 | $11.41K | 706,556 | Indirect |
| 06 Jul, 2026 | Jean Francois Formela | Director | Disposed S | 8,506 | $13.96 | $118.74K | 146,305 | Indirect |
| 22 Jun, 2026 | Jean Francois Formela | Director | Disposed S | 3,382 | $13.95 | $47.18K | 936,252 | Indirect |