Merck & Co., Inc. — Director's Dealing 2020

May 5, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Merck & Co., Inc. (MRK)
CIK: 0000310158
Period of Report: 2020-05-01

Reporting Person: Chattopadhyay Sanat (Exe V-P & Pres. MMD)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-01	Stock Option (Right to Buy)	$77.67	A	84576	Acquired	2030-04-30	Common Stock (84576)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	77753.357	Direct

Footnotes

F1: Holdings include shares acquired in dividend reinvestment transactions.

F2: The option vests and becomes exercisable in three equal installments on 5/1/2021, 5/1/2022 and 5/1/2023.