Form 4 for KRRO Korro Bio, Inc.
Accepted 2026-05-28 17:07:15 ET · period of report 2026-05-26 · accession 0001193125-26-245491 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-28 17:07 | 2026-05-26 | KRRO | Aiyar Ram | Pres, CEO, Dir | A - Grant | $12.33 | +50.0K | 90.0K | +125% | +$616.5K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-26 | A | A | 50,000 | $12.33 | 90,000 | D | — | — | (F1) Represents shares of common stock issued upon settlement and vesting of a performance stock unit (PSU) granted under the Issuer's 2023 Stock Option and Incentive Plan (the 2023 Plan) that vested and settled upon achievement of the performance condition on May 26, 2026. (F1) Represents shares of common stock issued upon settlement and vesting of a performance stock unit (PSU) granted under the Issuer's 2023 Stock Option and Incentive Plan (the 2023 Plan) that vested and settled upon achievement of the performance condition on May 26, 2026. (F2) Includes 40,000 shares of common stock issuable upon settlement of a restricted stock unit granted under the 2023 Plan as reported on Form 4 dated February 3, 2026. |