Form4insider filings, from the source

Insider holders · CIK 0001703647

Korro Bio, Inc. · KRRO

Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity

InsiderDirect sharesIndirect sharesTotal reportedLast report (ET)From
Lynx1 Capital Management LP10% Owner—1,544,9801,544,980Aug 13, 2026 · 9:54 am EDTForm 4
Weston Nichols10% Owner—1,544,9801,544,980Aug 13, 2026 · 9:54 am EDTForm 4
Jean Francois FormelaDirector—132,650132,650Sep 15, 2026 · 4:15 pm EDTForm 4
Ram AiyarPresident and CEO69,0464,61373,659Aug 5, 2026 · 4:05 pm EDTForm 4
Jeffrey CerioGeneral Counsel41,793—41,793Jul 17, 2026 · 7:08 am EDTForm 4
Loic A VincentChief Scientific Officer25,797—25,797Jul 17, 2026 · 7:14 am EDTForm 4
Todd ChappellChief Operating Officer24,464—24,464Jul 17, 2026 · 7:05 am EDTForm 4
Oliver DolanSenior Vice President, Finance16,241—16,241Sep 14, 2026 · 4:05 pm EDTForm 4

Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.