Form4insider filings, from the source

Company · CIK 0001703647 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

Korro Bio, Inc. · KRRO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $786k · 3net −$786k
$10k$10k$100k$100k$1M$1MbuyssalesAug 28Sep 2Sep 7Sep 12Sep 18Sep 23Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 11, 2026 SForm 4 →Sep 15, 4:15 pm EDTJean Francois FormelaDirector48,690$14.09$686,177132,650−26.9%10b5-1
Sep 11, 2026 SForm 4 →Sep 14, 4:05 pm EDTOliver DolanSenior Vice President, Finance5$13.72$6916,241−0.03%10b5-1
Sep 8, 2026 SForm 4 →Sep 10, 4:05 pm EDTOliver DolanSenior Vice President, Finance7,353$13.51$99,36816,246−31.2%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.