Dean Y. Li - May 1, 2023 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role: Executive VP & President, MRL
Signature: /s/ Kelly E. W. Grez as Attorney-in-Fact for Dean Y. Li
Stock symbol: MRK
Transactions as of: May 1, 2023
Transactions value $: $62,123
Form type: 4
Date filed: 5/3/2023, 04:10 PM
Previous filing: Oct 4, 2023
Next filing: May 4, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRK	Common Stock	Options Exercise	$123K	+1.06K	+5.33%	$115.47	21K	May 1, 2023	Direct
transaction	MRK	Common Stock	Tax liability	-$60.5K	-524	-2.5%	$115.47	20.5K	May 1, 2023	Direct

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	-1.06K	-100%	$0.00^*	0	May 1, 2023	Common Stock	1.06K		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.
F2	These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/1/2021, 5/1/2022 and 5/1/2023.