Chirfi Guindo - Aug 3, 2023 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role: Chief Marketing Officer
Signature: /s/ Jon Filderman, as attorney-in-fact for Chirfi Guindo
Stock symbol: MRK
Transactions as of: Aug 3, 2023
Transactions value $: $1,998,998
Form type: 4
Date filed: 8/4/2023, 04:17 PM
Previous filing: May 4, 2023
Next filing: May 2, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRK	Common Stock	Options Exercise	$3.9M	+36.9K	+2561.36%	$105.70	38.3K	Aug 3, 2023	Direct	F1
transaction	MRK	Common Stock	Tax liability	-$1.9M	-18K	-46.92%	$105.70	20.4K	Aug 3, 2023	Direct
holding	MRK	Common Stock-401(k) Plan						52.5	Aug 3, 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	Restricted Stock Unit	Options Exercise	$0	-36.9K	-33.33%	$0.00	73.8K	Aug 3, 2023	Common Stock	36.9K		Direct	F3, F4

* 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 July 10, 2023 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 vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 8/3/2023, 8/3/2024 and 8/3/2025.