Transaction #20444 · Form 4 · 0001193125-25-320864

Korro Bio, Inc. · Stock award · Common Stock

Korro Bio, Inc. · Transacted December 15, 2025 · Filed December 16, 2025

Original SEC filing ↗

What does this filing report?

An SEC Form 4 filing for Korro Bio, Inc. records a stock award involving Common Stock on December 15, 2025. The reported quantity was 20,132. The filing date is December 16, 2025. This is one transaction record; amounts are not allocated among any joint reporting owners.

The acquisition category describes how securities were received. It does not by itself establish a cash purchase of common stock. Read the transaction code definitionsand the original filing before interpreting the amounts.

Transaction details

Company CIK
0001703647
Security type
Non-derivative
Acquisition type
Stock award · Code A
Quantity acquired
20,132
Reported price
0
Reference value
0
Currency
Currency not specified
Ownership
Direct
Holdings after transaction
20,132
Ownership description
Not reported
SEC acceptance time
Dec 16, 2025, 4:11 PM EST
10b5-1 indication
Not indicated

Reference value is reported quantity × reported price. It is not a confirmed cash payment or an estimate of a derivative's economic value. A missing currency is not assumed to be USD.

Reporting owners

These are the reporting owners named in the filing. Quantities and amounts are not allocated among co-reporters. Roles reflect this filing, not a current profile.

Company listings

KRRO · Nasdaq · linked security

The linked listing is identified separately from other current company listings.

Filing footnotes & remarks

F1
Represents shares of common stock issuable upon settlement of a restricted stock unit (RSU) granted under the Issuer's 2023 Stock Option and Incentive Plan (the 2023 Plan) that will vest as follows: 50% on June 15, 2026 and 50% on December 15, 2026, in each case subject to the reporting person maintaining a continuous Service Relationship (as defined in the 2023 Plan) through each such date.

Footnotes are reproduced as plain text from the current source filing. For the full context, read the original SEC filing.

This record was updated Eastern Time. This is the stored record update time, not the transaction date. Report a correction.