David Michael Williams - Aug 4, 2025 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role
EVP,Chief Info&Digital Officer
Signature
/s/ Kelly E. W. Grez as Attorney-in-Fact for David Michael Williams
Stock symbol
MRK
Transactions as of
Aug 4, 2025
Transactions value $
$688,792
Form type
4
Date filed
8/5/2025, 08:46 AM
Previous filing
May 1, 2025
Next filing
Nov 4, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Williams David Michael EVP,Chief Info&Digital Officer MERCK & CO., INC., 126 EAST LINCOLN AVENUE, RAHWAY /s/ Kelly E. W. Grez as Attorney-in-Fact for David Michael Williams 2025-08-05 0001820958

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MRK Common Stock Options Exercise $1.36M +17.1K +70.37% $79.29 41.4K Aug 4, 2025 Direct F1
transaction MRK Common Stock Tax liability -$669K -8.43K -20.34% $79.29 33K Aug 4, 2025 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 -17.1K -100% $0.00 0 Aug 4, 2025 Common Stock 17.1K 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 vested and were distributed as shares of Merck & Co., Inc. common stock in one installment on 8/4/2025, the business day immediately following 8/3/2025. The Reporting Person's Form 4 filed on 8/4/2022 incorrectly reported that these restricted stock units vested and were to be distributed in three equal installments on 8/3/2023, 8/3/2024, and 8/3/2025.