Cerio Jeffrey 4
4 · Korro Bio, Inc. · Filed Jun 17, 2026
Research Summary
AI-generated summary of this filing
Korro Bio (KRRO) General Counsel Jeffrey Cerio Sells 6,609 Shares
What Happened Jeffrey Cerio, General Counsel of Korro Bio (KRRO), sold 6,609 shares on June 16, 2026, for a reported weighted-average price of $10.83, generating proceeds of approximately $71,575. The sale was a mandatory disposition solely to satisfy tax withholding obligations upon vesting and settlement of a restricted stock unit (RSU).
Key Details
- Transaction date: 2026-06-16; Filing date: 2026-06-17 (timely).
- Transaction type: Sale (S) — mandatory tax-withholding disposition of RSU (Footnote F1).
- Reported weighted-average price: $10.83; actual sale prices ranged $10.58–$11.35 across multiple transactions (Footnote F2).
- Shares sold: 6,609; proceeds ≈ $71,575.
- Shares issuable/subject to future vesting: includes 20,951 shares issuable upon settlement of an RSU that vests Dec 15, 2026, contingent on continue service (Footnote F3).
- Filing does not indicate a 10b5-1 plan or late filing.
Context This sale was executed to satisfy tax withholding on vested RSUs, a common and routine insider sale that does not necessarily indicate a change in the insider’s view of the company. For retail investors, purchases typically carry clearer bullish signals than mandatory withholding sales.
Insider Transaction Report
Form 4
Korro Bio, Inc.KRRO
Cerio Jeffrey
General Counsel
Transactions
- Sale
Common Stock
[F1][F2][F3]2026-06-16$10.83/sh−6,609$71,575→ 35,293 total
Footnotes (3)
- [F1]Represents the mandatory sale of shares of common stock solely to satisfy tax withholding obligations incurred upon vesting and settlement of a restricted stock unit (RSU) granted under the Issuer's 2023 Stock Option and Incentive Plan (the 2023 Plan).
- [F2]The price reported in Column 4 is a weighted-average price. The shares were sold in multiple transactions at prices ranging from $10.58 to $11.35, inclusive. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission upon request.
- [F3]Includes 20,951 shares of common stock issuable upon settlement of a RSU granted under the 2023 Plan that will vest on December 15, 2026 subject to the reporting person maintaining a continuous Service Relationship (as defined in the 2023 Plan) through such date.
Signature
/s/ Jeffrey Cerio|2026-06-17