Merck & Co., Inc. — Director's Dealing 2022

May 4, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co., Inc. (MRK)
CIK: 0000310158
Period of Report: 2022-05-03

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-05-03	Common Stock	M	773	$87.65	Acquired	15270.93	Direct
2022-05-03	Common Stock	F	381	$87.65	Disposed	14889.93	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-05-03	Restricted Stock Unit	$	M	773	Disposed	2022-05-03	Common Stock (773)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6.19	Indirect
Common Stock	6.19	Indirect
Common Stock - 401(k) Plan	823.2578	Indirect
Common Stock - 401(k) Plan	662.6574	Indirect

Footnotes

F1: Holdings include shares acquired in dividend reinvestment transactions.

F2: Includes shares acquired and dividends earned through April 7, 2022 in the Merck U.S. Savings Plan, a 401(k) plan.

F3: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F4: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.