Chirfi Guindo - May 2, 2023 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role: Chief Marketing Officer
Signature: /s/ Kelly E. W. Grez, as attorney-in-fact for Chirfi Guindo
Stock symbol: MRK
Transactions as of: May 2, 2023
Transactions value $: $0
Form type: 4
Date filed: 5/4/2023, 05:43 PM
Previous filing: Aug 4, 2022
Next filing: Aug 4, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	MRK	Common Stock						1.43K	May 2, 2023	Direct	F1
holding	MRK	Common Stock-401(k) Plan						52.1	May 2, 2023	By 401(k)	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MRK	Stock Option (Right to Buy)	Award	$0	+34.6K		$0.00	34.6K	May 2, 2023	Common Stock	34.6K	$117.89	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Holdings include shares acquired in dividend reinvestment transactions.
F2	Includes shares acquired and dividends earned through April 10, 2023 in the Merck U.S. Savings Plan, a 401(k) plan.
F3	The option vests and becomes exercisable in equal installments on 5/2/2024, 5/2/2025 and 5/2/2026.