| 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 | 04 Nov 2025 | 0001820958 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MRK | Common Stock | Sale | $720,040 | -8,614 | -26% | $83.59 | 24,578 | 03 Nov 2025 | Direct | F1, F2 |
| 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 $83.5400 to $83.6200, 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 | Holdings include shares acquired in dividend reinvestment transactions. |