Korro Bio, Inc. (KRRO)

Latest Insider Confidence Score

2026Q1

50.0
Bearish

Company insider confidence (by quarter)

2019Q4 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Atlas Venture Fund XI, L.P. 1,119,292 Nov 7, 2023
Atlas Venture Associates XI, L.P. 1,119,292 Nov 7, 2023
Atlas Venture Associates XI, LLC 1,119,292 Nov 7, 2023
New Enterprise Associates 17, L.P. 10% Owner 1,090,793 Apr 24, 2024
NEA Partners 17, L.P. 10% Owner 1,090,793 Apr 24, 2024

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 2, 2026 Feb 3, 2026 Aiyar Ram CEO Neutral 90.0 +40,000 867.11% -
Feb 2, 2026 Feb 3, 2026 Vincent Loic A Chief Scientific Officer Neutral 52.5 - 0.00% -
Feb 2, 2026 Feb 3, 2026 Dolan Oliver President Neutral 52.5 - 0.00% -
Feb 2, 2026 Feb 3, 2026 Cerio Jeffrey General Counsel Neutral 52.5 - 0.00% -
Feb 2, 2026 Feb 3, 2026 Chappell Todd COO Neutral 52.5 - 0.00% -
Dec 15, 2025 Dec 16, 2025 Chappell Todd COO Neutral 90.0 +20,132 100.00% -
Dec 15, 2025 Dec 16, 2025 Vincent Loic A Chief Scientific Officer Neutral 90.0 +21,715 100.00% -
Dec 15, 2025 Dec 16, 2025 Cerio Jeffrey General Counsel Neutral 90.0 +41,902 100.00% -
Dec 15, 2025 Dec 16, 2025 Dolan Oliver President Neutral 90.0 +21,482 100.00% -
Jun 11, 2025 Jun 12, 2025 Behbahani Ali Director Neutral 52.5 - 0.00% -
Jun 11, 2025 Jun 12, 2025 Meyers Rachel Director Neutral 52.5 - 0.00% -
Jun 11, 2025 Jun 12, 2025 Bermingham Nessan Director Neutral 52.5 - 0.00% -
Jun 11, 2025 Jun 12, 2025 Knobil Katharine Director Neutral 52.5 - 0.00% -
Jun 11, 2025 Jun 12, 2025 FORMELA JEAN FRANCOIS Director Neutral 52.5 - 0.00% -
Jun 11, 2025 Jun 12, 2025 PEARSON TIMOTHY R Director Neutral 52.5 - 0.00% -
Apr 1, 2025 Apr 1, 2025 Dolan Oliver President Neutral 52.5 - 0.00% -
Apr 1, 2025 Apr 1, 2025 Vincent Loic A Chief Scientific Officer Neutral 52.5 - 0.00% -
Apr 1, 2025 Vincent Loic A Chief Scientific Officer Neutral 52.5 - 0.00% -
Feb 11, 2025 Dolan Oliver President Neutral 52.5 - 0.00% -
Feb 3, 2025 Feb 5, 2025 Cerio Jeffrey General Counsel Neutral 52.5 - 0.00% -
Feb 3, 2025 Feb 5, 2025 Agarwal Vineet CFO Neutral 52.5 - 0.00% -
Feb 3, 2025 Feb 5, 2025 Aiyar Ram CEO Neutral 52.5 - 0.00% -
Feb 3, 2025 Feb 5, 2025 Chappell Todd COO Neutral 52.5 - 0.00% -
Feb 3, 2025 Feb 5, 2025 Olugemo Olukemi Chief Medical Officer Neutral 52.5 - 0.00% -
Nov 11, 2024 Nov 12, 2024 Agarwal Vineet CFO Sell 10.0 -800 -100.00% $56K
Oct 17, 2024 Oct 18, 2024 Agarwal Vineet CFO Sell 7.5 -10,216 -100.00% $799.5K
Sep 3, 2024 Sep 3, 2024 Cerio Jeffrey General Counsel Neutral 52.5 - 0.00% -
Sep 3, 2024 Cerio Jeffrey General Counsel Neutral 52.5 - 0.00% -
Aug 26, 2024 Aug 28, 2024 Knobil Katharine Director Neutral 52.5 - 0.00% -
Aug 28, 2024 Knobil Katharine Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 Behbahani Ali Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 FORMELA JEAN FRANCOIS Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 Meyers Rachel Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 Bermingham Nessan Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 PEARSON TIMOTHY R Director Neutral 52.5 - 0.00% -
Jun 11, 2024 Jun 12, 2024 Lucchino David L. Director Neutral 52.5 - 0.00% -
Jun 3, 2024 Jun 4, 2024 Olugemo Olukemi Chief Medical Officer Neutral 52.5 - 0.00% -
May 14, 2024 Olugemo Olukemi Chief Medical Officer Neutral 52.5 - 0.00% -
Apr 22, 2024 Apr 24, 2024 New Enterprise Associates 17, L.P. 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 BASKETT FOREST 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Behbahani Ali Director Neutral 77.5 +17,857 1.66% -
Apr 22, 2024 Apr 24, 2024 Florence Anthony A. Jr. 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Walker Paul Edward 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Chang Carmen 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Mathers Edward T 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Yang Rick 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 Makhzoumi Mohamad 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 24, 2024 SANDELL SCOTT D 10% Owner Buy 85.0 +17,857 1.66% $1000K
Apr 22, 2024 Apr 23, 2024 FORMELA JEAN FRANCOIS Director Neutral 90.0 +17,857 10.08% -
Apr 22, 2024 Apr 23, 2024 Atlas Venture Opportunity Fund II, L.P. 10% Owner Buy 97.5 +17,857 10.08% $1000K
Nov 27, 2023 Nov 29, 2023 Meyers Rachel Director Neutral 52.5 - 0.00% -
Nov 29, 2023 Meyers Rachel Director Neutral 52.5 - 0.00% -
Nov 22, 2023 Nov 27, 2023 Lucchino David L. Director Sell 46.3 -1,156 -4.96% $43.6K
Nov 3, 2023 Nov 22, 2023 Lucchino David L. Director Sell 91.3 +5,032 27.54% $40.6K
Nov 7, 2023 Yang Rick 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Walker Paul Edward 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 SANDELL SCOTT D 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Mathers Edward T 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Makhzoumi Mohamad 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Florence Anthony A. Jr. 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Chang Carmen 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 BASKETT FOREST 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 New Enterprise Associates 17, L.P. 10% Owner Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 Colletti Steve Chief Scientific Officer Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 Walker Shelby J. Officer Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 Bermingham Nessan Director Neutral 90.0 +35,114 100.00% -
Nov 3, 2023 Nov 7, 2023 Behbahani Ali Director Neutral 90.0 +1,072,936 100.00% -
Nov 3, 2023 Nov 7, 2023 Chappell Todd COO Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 Aiyar Ram CEO Neutral 90.0 +4,613 100.00% -
Nov 3, 2023 Nov 7, 2023 Agarwal Vineet CFO Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 PEARSON TIMOTHY R Director Neutral 52.5 - 0.00% -
Nov 3, 2023 Nov 7, 2023 FORMELA JEAN FRANCOIS Director Neutral 90.0 +1,119,292 100.00% -
Nov 7, 2023 Atlas Venture Opportunity Fund II, L.P. 10% Owner Neutral 52.5 - 0.00% -
Nov 7, 2023 Agarwal Vineet CFO Neutral 52.5 - 0.00% -
Nov 7, 2023 Behbahani Ali Director Neutral 52.5 - 0.00% -
Nov 7, 2023 Bermingham Nessan Director Neutral 52.5 - 0.00% -
Nov 7, 2023 PEARSON TIMOTHY R Director Neutral 52.5 - 0.00% -
Nov 7, 2023 Chappell Todd COO Neutral 52.5 - 0.00% -
Nov 7, 2023 Walker Shelby J. Officer Neutral 52.5 - 0.00% -
Nov 7, 2023 Aiyar Ram CEO Neutral 52.5 - 0.00% -
Nov 7, 2023 Colletti Steve Chief Scientific Officer Neutral 52.5 - 0.00% -
Nov 7, 2023 FORMELA JEAN FRANCOIS Director Neutral 52.5 - 0.00% -
Aug 18, 2023 Aug 22, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -464 -0.88% $268.6
Aug 18, 2023 Aug 22, 2023 Lucchino David L. CEO Sell 52.5 -5,922 -0.93% $3.2K
Aug 16, 2023 Aug 18, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -464 -0.87% $299.4
Aug 16, 2023 Aug 18, 2023 Lucchino David L. CEO Sell 52.5 -5,628 -0.87% $3.6K
Aug 14, 2023 Aug 16, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -466 -0.86% $300.5
Aug 14, 2023 Aug 16, 2023 Lucchino David L. CEO Sell 52.5 -5,510 -0.85% $3.6K
Aug 10, 2023 Aug 14, 2023 Lucchino David L. CEO Sell 52.5 -5,523 -0.84% $3.7K
Aug 10, 2023 Aug 14, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -487 -0.90% $311.7
Aug 8, 2023 Aug 10, 2023 Lucchino David L. CEO Sell 52.5 -5,608 -0.85% $3.8K
Aug 8, 2023 Aug 10, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -479 -0.87% $318.6
Aug 4, 2023 Aug 9, 2023 Lucchino David L. CEO Sell 52.5 -5,407 -0.81% $3.7K
Aug 4, 2023 Aug 9, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -455 -0.82% $309.6
Aug 2, 2023 Aug 4, 2023 Lucchino David L. CEO Sell 52.5 -5,266 -0.78% $2.9K
Aug 2, 2023 Aug 4, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -463 -0.83% $243.1
Jul 31, 2023 Aug 2, 2023 Lucchino David L. CEO Sell 52.5 -5,475 -0.81% $2.7K
Jul 31, 2023 Aug 2, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -460 -0.82% $225.2
Jul 27, 2023 Jul 31, 2023 Mitrano Richard J. VP Finance & Operations Sell 52.5 -450 -0.79% $225.1
Jul 27, 2023 Jul 31, 2023 Lucchino David L. CEO Sell 52.5 -5,438 -0.80% $2.7K