Katharine Knobil - Jun 11, 2025 Form 4 Insider Report for Korro Bio, Inc. (KRRO)

Role
Director
Signature
/s/ Jeffrey Cerio, attorney-in-fact
Stock symbol
KRRO
Transactions as of
Jun 11, 2025
Transactions value $
$0
Form type
4
Date filed
6/12/2025, 04:26 PM
Previous filing
Jun 9, 2025
Next filing
Nov 19, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Knobil Katharine Director C/O KORRO BIO, INC., 60 FIRST STREET, 2ND FLOOR, SUITE 250, CAMBRIDGE /s/ Jeffrey Cerio, attorney-in-fact 2025-06-12 0001768011

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction KRRO Stock Option (Right to Buy) Award $0 +6.01K $0.00 6.01K Jun 11, 2025 Common Stock 6.01K $14.87 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The shares subject to the option vest in full on the earlier of (i) the one-year anniversary of the grant date or (ii) the date of the next annual meeting of stockholders, subject to continued service as a non-employee director through the applicable vesting date.

Remarks:

Exhibit 24.1 - Power of Attorney