Merck & Co., Inc. — Director's Dealing 2023

May 5, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co., Inc. (MRK)
CIK: 0000310158
Period of Report: 2023-05-04

Reporting Person: Klobuchar Michael A (EVP - Chief Strategy Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-05-04	Common Stock	M	885	$118.22	Acquired	19475.999	Direct
2023-05-04	Common Stock	F	436	$118.22	Disposed	19039.999	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-05-04	Restricted Stock Unit	$	M	885	Disposed	2024-05-04	Common Stock (885)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6.292	Indirect
Common Stock	6.292	Indirect
Common Stock - 401(k) Plan	844.8555	Indirect
Common Stock - 401(k) Plan	680.0415	Indirect

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F2: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.