SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Litchfield Caroline

(Last)

(First)

(Middle)

MERCK & CO., INC.

2000 GALLOPING HILL ROAD

(Street)

KENILWORTH

07033

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2021

3. Issuer Name and Ticker or Trading Symbol
Merck & Co., Inc. [ MRK ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP & CFO

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	18,242.1241⁽¹⁾	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Restricted Stock Unit	05/04/2019⁽²⁾	05/04/2021	Common Stock	1,039	⁽³⁾	D
Restricted Stock Unit	05/03/2020⁽⁴⁾	05/03/2022	Common Stock	1,500	⁽³⁾	D
Restricted Stock Unit	03/01/2021⁽⁵⁾	03/01/2023	Common Stock	2,520	⁽³⁾	D
Stock Option (Right to Buy)	05/02/2015⁽⁶⁾	05/01/2024	Common Stock	22,008	58.22	D
Stock Option (Right to Buy)	05/01/2016⁽⁷⁾	04/30/2025	Common Stock	37,152	59.86	D
Stock Option (Right to Buy)	05/10/2017⁽⁸⁾	05/09/2026	Common Stock	40,747	54.68	D
Stock Option (Right to Buy)	05/05/2018⁽⁹⁾	05/04/2027	Common Stock	25,678	63.97	D
Stock Option (Right to Buy)	05/04/2019⁽¹⁰⁾	05/03/2028	Common Stock	21,957	57.75	D
Stock Option (Right to Buy)	05/03/2020⁽¹¹⁾	05/02/2029	Common Stock	16,936	80	D
Stock Option (Right to Buy)	05/01/2021⁽¹²⁾	04/30/2030	Common Stock	19,709	77.67	D

Explanation of Responses:

1. Holdings include shares acquired in dividend reinvestment transactions.

2. These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2019, 5/4/2020 and 5/4/2021.

3. Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

4. These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

5. 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.

6. The option became exercisable in equal installments on 5/2/2015, 5/2/2016 and 5/2/2017.

7. The option became exercisable in equal installments on 5/1/2016, 5/1/2017 and 5/1/2018.

8. The option became exercisable in equal installments on 5/10/2017, 5/10/2018 and 5/10/2019.

9. The option vests and becomes exercisable in three equal installments on 5/5/2018, 5/5/2019 and 5/5/2020.

10. The option vests and becomes exercisable in three equal installments on 5/4/2019, 5/4/2020 and 5/4/2021.

11. The option vests and becomes exercisable in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

12. The option vests and becomes exercisable in three equal installments on 5/1/2021, 5/1/2022 and 5/1/2023.

Remarks:

See Exhibit 24 - Power of Attorney

	/s/ Kelly E. W. Grez as attorney-in-fact for Caroline Litchfield	04/07/2021
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.