MRK

SEC source: 0001127602-22-021362 · form4.xml · derivative · entry 3

FRAZIER KENNETH C · CIK 0001181175 · Director · Executive Chair

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,532

Underlying: Common Stock · 28,532 shares

Expires 2023-08-03

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F4 · derivative.exercise_date: These restricted stock units vest in full and are distributed as shares of Merck & Co., Inc. common stock on 8/3/2023.

SEC source: 0001127602-22-018669 · form4.xml · derivative · entry 2

WENDELL PETER C · CIK 0001032635 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,036.4341

Underlying: Common Stock · 329.0556 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-018671 · form4.xml · derivative · entry 2

Seidman Christine E · CIK 0001805745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,871.9087

Underlying: Common Stock · 89.1192 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-018673 · form4.xml · derivative · entry 2

GLOCER THOMAS H · CIK 0001140799 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,209.3897

Underlying: Common Stock · 493.5834 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-018676 · form4.xml · derivative · entry 2

Coe Mary Ellen · CIK 0001691304 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,167.7572

Underlying: Common Stock · 356.477 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016138 · form4.xml · derivative · entry 2

BAKER DOUGLAS M JR · CIK 0001198753 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,363.5582

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

SEC source: 0001127602-22-016144 · form4.xml · derivative · entry 2

Coe Mary Ellen · CIK 0001691304 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,811.2802

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016149 · form4.xml · derivative · entry 2

Craig Pamela J. · CIK 0001232910 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,152.0045

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016153 · form4.xml · derivative · entry 2

GLOCER THOMAS H · CIK 0001140799 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,715.8063

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016158 · form4.xml · derivative · entry 2

LAVIZZO-MOUREY RISA J · CIK 0001034465 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,892.9615

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016164 · form4.xml · derivative · entry 2

Mayo Stephen · CIK 0001849061 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,297.517

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016169 · form4.xml · derivative · entry 2

Rothman Paul · CIK 0001601332 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,152.0155

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016173 · form4.xml · derivative · entry 2

RUSSO PATRICIA F · CIK 0001023219 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,506.9295

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016178 · form4.xml · derivative · entry 2

Seidman Christine E · CIK 0001805745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,782.7895

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016182 · form4.xml · derivative · entry 2

Thulin Inge G · CIK 0001263739 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,518.6335

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016184 · form4.xml · derivative · entry 2

Warden Kathy J · CIK 0001559112 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,018.0305

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-016186 · form4.xml · derivative · entry 2

WENDELL PETER C · CIK 0001032635 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,707.3785

Underlying: Common Stock · 2,363.5582 shares

Expires not disclosed

F1 · derivative.exercise_price: 1-for-1

F2 · derivative.exercise_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F2 · derivative.expiration_date: Phantom stock units are to be settled 100% in cash upon reporting person's termination of service in accordance with a distribution schedule elected pursuant to the terms of the Plan for Deferred Payment of Directors' Compensation.

F3 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013519 · form4.xml · derivative · entry 5

LeCointe-Cephas Lisa · CIK 0001854644 · SVP Chief Ethics & Com Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,629

Underlying: Common Stock · 813 shares

Expires 2024-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F5 · shares: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F6 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.

F5 · balance_after: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

SEC source: 0001127602-22-013519 · form4.xml · nonDerivative · entry 2

LeCointe-Cephas Lisa · CIK 0001854644 · SVP Chief Ethics & Com Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,663.781

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013519 · form4.xml · nonDerivative · entry 1

LeCointe-Cephas Lisa · CIK 0001854644 · SVP Chief Ethics & Com Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,942.781

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013522 · form4.xml · derivative · entry 7

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,772

Underlying: Common Stock · 885 shares

Expires 2024-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F4 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.

SEC source: 0001127602-22-013522 · form4.xml · nonDerivative · entry 2

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,338.93

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013522 · form4.xml · nonDerivative · entry 1

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,774.93

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013535 · form4.xml · derivative · entry 5

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,900

Underlying: Common Stock · 949 shares

Expires 2024-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F5 · shares: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F6 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.

F5 · balance_after: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

SEC source: 0001127602-22-013535 · form4.xml · nonDerivative · entry 2

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,102.972

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013535 · form4.xml · nonDerivative · entry 1

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,428.972

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013544 · form4.xml · derivative · entry 3

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,819

Underlying: Common Stock · 907 shares

Expires 2024-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.

SEC source: 0001127602-22-013544 · form4.xml · nonDerivative · entry 2

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,109

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013544 · form4.xml · nonDerivative · entry 1

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,368

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013549 · form4.xml · derivative · entry 3

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,819

Underlying: Common Stock · 907 shares

Expires 2024-05-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · derivative.exercise_date: These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.

SEC source: 0001127602-22-013549 · form4.xml · nonDerivative · entry 2

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,513.881

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013549 · form4.xml · nonDerivative · entry 1

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,960.881

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013210 · form4.xml · derivative · entry 3

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 773 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · derivative.exercise_date: The restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installment on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013210 · form4.xml · nonDerivative · entry 2

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,461

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013210 · form4.xml · nonDerivative · entry 1

Garay Arpa · CIK 0001916360 · SVP Human Health Global Mktg.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,682

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013216 · form4.xml · derivative · entry 7

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 773 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F4 · derivative.exercise_date: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013216 · form4.xml · nonDerivative · entry 2

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,889.93

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013216 · form4.xml · nonDerivative · entry 1

Klobuchar Michael A · CIK 0001871957 · EVP - Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,270.93

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013244 · form4.xml · derivative · entry 3

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 773 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · derivative.exercise_date: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013244 · form4.xml · nonDerivative · entry 2

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,053.881

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013244 · form4.xml · nonDerivative · entry 1

Oosthuizen Johannes Jacobus · CIK 0001916310 · SVP, U.S. Market

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,434.881

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013254 · form4.xml · derivative · entry 3

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 902 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · shares: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F4 · derivative.exercise_date: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013254 · form4.xml · nonDerivative · entry 2

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,479.972

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013254 · form4.xml · nonDerivative · entry 1

Karachun Rita A · CIK 0001601572 · Sr. VP Fince-Global Controller

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,788.972

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013267 · form4.xml · derivative · entry 3

Williams David Michael · CIK 0001820958 · EVP,Chief Info&Digital Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 427 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · shares: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F4 · derivative.exercise_date: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013267 · form4.xml · nonDerivative · entry 2

Williams David Michael · CIK 0001820958 · EVP,Chief Info&Digital Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,262.757

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013267 · form4.xml · nonDerivative · entry 1

Williams David Michael · CIK 0001820958 · EVP,Chief Info&Digital Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,409.757

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-22-013279 · form4.xml · derivative · entry 3

Li Dean Y · CIK 0001837016 · Executive VP & President, MRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 773 shares

Expires 2022-05-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.

F3 · shares: Holdings reflect the adjustments that occurred as of June 2, 2021 in connection with the Organon & Co. ("Organon") spin-off as described in the registration statement on Form 10 filed with the SEC by Organon (the "Form 10"). As reported in the Form 10, all Merck restricted stock unit awards outstanding as of immediately prior to the distribution date were converted on the distribution date into adjusted Merck awards for Merck employees to preserve the same intrinsic value and general terms and conditions (including vesting) as were in place immediately prior to the adjustments.

F4 · derivative.exercise_date: These restricted stock units vested and were distributed as shares of Merck & Co., Inc. common stock in three equal installments on 5/3/2020, 5/3/2021 and 5/3/2022.

SEC source: 0001127602-22-013279 · form4.xml · nonDerivative · entry 2

Li Dean Y · CIK 0001837016 · Executive VP & President, MRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,457.945

F1 · balance_after: Holdings include shares acquired in dividend reinvestment transactions.

SEC source: 0001127602-22-013279 · form4.xml · nonDerivative · entry 1

Li Dean Y · CIK 0001837016 · Executive VP & President, MRL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,838.945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.