Rita A. Karachun - 01 May 2023 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role: Sr. VP Fince-Global Controller
Signature: /s/ Kelly E. W. Grez as Attorney-in-Fact for Rita Karachun
Issuer symbol: MRK
Transactions as of: 01 May 2023
Net transactions value: +$70,552
Form type: 4
Filing time: 03 May 2023, 16:24:55 UTC
Previous filing: 25 Jan 2023
Next filing: 04 May 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRK	Common Stock	Options Exercise	$107,387	+930	+2.1%	$115.47	44,879	01 May 2023	Direct
transaction	MRK	Common Stock	Tax liability	$36,835	-319	-0.71%	$115.47	44,560	01 May 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	-930	-100%	$0.000000^*	0	01 May 2023	Common Stock	930		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.