Jennifer Zachary - 09 Feb 2026 Form 4 Insider Report for Merck & Co., Inc. (MRK)

Role
EVP, General Counsel
Signature
/s/ Kelly E. W. Grez as Attorney-in-Fact for Jennifer Zachary
Issuer symbol
MRK
Transactions as of
09 Feb 2026
Net transactions value
$0
Form type
4
Filing time
09 Feb 2026, 16:01:25 UTC
Previous filing
28 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Zachary Jennifer EVP, General Counsel MERCK & CO., INC., 126 EAST LINCOLN AVENUE, RAHWAY /s/ Kelly E. W. Grez as Attorney-in-Fact for Jennifer Zachary 09 Feb 2026 0001737231

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MRK Common Stock Options Exercise $3,091,523 +25,946 +38% $119.15 94,862 09 Feb 2026 Direct F1
transaction MRK Common Stock Sale $3,091,523 -25,946 -27% $119.15 68,916 09 Feb 2026 Direct F1
transaction MRK Common Stock Options Exercise $6,766,892 +56,792 +82% $119.15 125,708 09 Feb 2026 Direct F1
transaction MRK Common Stock Sale $6,766,892 -56,792 -45% $119.15 68,916 09 Feb 2026 Direct F1
transaction MRK Common Stock Options Exercise $4,627,276 +38,835 +56% $119.15 107,751 09 Feb 2026 Direct F1
transaction MRK Common Stock Sale $4,627,276 -38,835 -36% $119.15 68,916 09 Feb 2026 Direct F1

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 Stock Option (Right to Buy) Options Exercise $0 -25,946 -100% $0.000000 0 09 Feb 2026 Common Stock 25,946 $75.36 Direct F2
transaction MRK Stock Option (Right to Buy) Options Exercise $0 -56,792 -100% $0.000000 0 09 Feb 2026 Common Stock 56,792 $73.73 Direct F3
transaction MRK Stock Option (Right to Buy) Options Exercise $0 -38,835 -100% $0.000000 0 09 Feb 2026 Common Stock 38,835 $87.10 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.9600 to $119.5100, inclusive. The reporting person undertakes to provide to Merck & Co., Inc., any security holder of Merck & Co., Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above in this footnote.
F2 The option vested and became exercisable in three equal installments on 5/1/2021, 5/1/2022 and 5/1/2023.
F3 The option vests and becomes exercisable in three equal installments on 5/4/2022, 5/4/2023 and 5/4/2024.
F4 The option vests and becomes exercisable in equal installments on 5/3/2023, 5/3/2024 and 5/3/2025.