$MRK · Merck & Co., Inc.

Merck & Co., Inc. filed a current report on Form 8-K dated October 29, 2026, to announce its financial results for the third quarter of 2026. The filing states that the company issued a press release on the same date regarding earnings for the quarter, and that the press release is incorporated by reference as Exhibit 99.1. In addition, certain supplemental information not included in the press release is incorporated by reference as Exhibit 99.2.

The filing was made under Item 2.02, “Results of Operations and Financial Condition,” which is used to furnish earnings information. Merck notes that the information in the report, including the exhibits, is being furnished rather than filed, and therefore is not subject to the liabilities of Section 18 of the Securities Exchange Act of 1934. The information is also not automatically incorporated by reference into any other filing under the Securities Act of 1933 or the Exchange Act unless expressly set forth by specific reference.

The report was signed by Kelly E. W. Grez, Corporate Secretary, on behalf of Merck & Co., Inc. The filing does not include any additional commentary or forward-looking statements beyond the furnished earnings materials and the related administrative disclosures.