Merck & Co., Inc. — Director's Dealing 2025

Jun 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co., Inc. (MRK)
CIK: 0000310158
Period of Report: 2025-05-30

Reporting Person: LAVIZZO-MOUREY RISA J (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-30	Phantom Stock	$	A	2863.0921	Acquired		Common Stock (2863.0921)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1000	Direct

Footnotes

F1: 1-for-1

F2: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3: Holdings include shares acquired in dividend reinvestment transactions.