Johannes Oosthuizen - Oct 30, 2023 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role: President, U.S. Market
Signature: /s/ Kelly E. W. Grez, as attorney-in-fact for Johannes Oosthuizen
Stock symbol: MRK
Transactions as of: Oct 30, 2023
Transactions value $: $47,708
Form type: 4
Date filed: 10/31/2023, 11:08 AM
Previous filing: May 5, 2023
Next filing: Nov 13, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRK	Common Stock	Options Exercise	$94.1K	+915	+4.62%	$102.82	20.7K	Oct 30, 2023	Direct
transaction	MRK	Common Stock	Tax liability	-$46.4K	-451	-2.18%	$102.82	20.3K	Oct 30, 2023	Direct	F1

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	-915	-100%	$0.00^*	0	Oct 30, 2023	Common Stock	915		Direct	F2, 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	Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.
F3	These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 10/30/2021, 10/30/2022 and 10/30/2023.