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

Role: Director, 10%+ Owner
Signature: /s/ Zachary Bambach, attorney-in-fact
Stock symbol: KRRO
Transactions as of: Jun 11, 2025
Transactions value $: $0
Form type: 4
Date filed: 6/12/2025, 04:40 PM
Previous filing: Jun 6, 2025
Next filing: Jun 12, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Behbahani Ali	Director, 10%+ Owner	2855 SAND HILL ROAD, MENLO PARK	/s/ Zachary Bambach, attorney-in-fact	2025-06-12	0001613867

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.