Sanat Chattopadhyay - 26 Jan 2026 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role
Exe V-P & Pres. MMD
Signature
/s/ Kelly E. W. Grez as Attorney-in-Fact for Sanat Chattopadhyay
Issuer symbol
MRK
Transactions as of
26 Jan 2026
Net transactions value
+$1,490,712
Form type
4
Filing time
28 Jan 2026, 16:01:29 UTC
Previous filing
21 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chattopadhyay Sanat Exe V-P & Pres. MMD MERCK & CO., INC., 126 EAST LINCOLN AVENUE, RAHWAY /s/ Kelly E. W. Grez as Attorney-in-Fact for Sanat Chattopadhyay 28 Jan 2026 0001670690

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MRK Common Stock Award $1,490,712 +13,880 $107.40 13,880 26 Jan 2026 Direct F1
holding MRK Common Stock 74,289 26 Jan 2026 By GRAT April 2025 F2
holding MRK Common Stock 57,622 26 Jan 2026 By GRAT August 2025 F3
holding MRK Common Stock 53,417 26 Jan 2026 By GRAT February 2025 F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Distribution of net after tax shares of common stock on satisfaction of performance criteria for performance share units granted on 3/31/23. Performance shares were paid out at 94 percent of target awards. Includes dividends accrued over the three-year performance period ending December 31, 2025.
F2 The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay April 2025 Grantor Retained Annuity Trust.
F3 The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay August 2025 Grantor Retained Annuity Trust.
F4 The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay February 2025 Grantor Retained Annuity Trust.