Merck & Co., Inc. — Director's Dealing 2018

May 2, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co., Inc. (MRK)
CIK: 0000310158
Period of Report: 2018-05-01

Reporting Person: Karachun Rita A (Sr. VP Fince-Global Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-01	Common Stock	M	3007.0000	$0.0000	Acquired	22204.9720	Direct
2018-05-01	Common Stock	F	1030.0000	$58.8700	Disposed	21174.9720	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-01	Restricted Stock Unit	$	M	3007.0000	Disposed	2018-05-01	Common Stock (3007.0000)	Direct

Footnotes

F1: Holdings include shares acquired in dividend reinvestment transactions.

F2: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.