Organon & Co. — Director's Dealing 2026

Mar 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Organon & Co. (OGN)
CIK: 0001821825
Period of Report: 2026-02-27

Reporting Person: WALSH MATTHEW M (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-27	Common Stock	A	42599	—	Acquired	187083	Direct
2026-02-27	Common Stock	F	14887	$7.17	Disposed	172196	Direct
2026-02-27	Common Stock	A	12020	—	Acquired	184216	Direct
2026-02-27	Common Stock	F	4117	$7.23	Disposed	180751	Direct

Footnotes

F1: Represents shares of Organon & Co. common stock ("Common Stock") for performance share units ("PSUs") granted to the reporting person on August 11, 2023 under the Organon & Co. 2021
Incentive Stock Plan. The performance-vesting restrictions with respect to these shares were released upon certification of performance goal attainment by the Talent Committee of Organon's Board of
Directors.

F2: Represents the shares of Common Stock released to cover the dividend equivalents earned on the PSUs released above.

F3: Includes the addition of 652 shares of Common Stock acquired from dividend equivalents net of withholding tax not previously required to be reported.