MRK: Financial results

Item 2.02. Results of Operations and Financial Condition . The following information, including the exhibits hereto, is being furnished pursuant to this Item 2.02. Incorporated by reference is a press release issued by Merck & Co., Inc. on October 29, 2026, regarding earnings for the third quarter of 2026, attached as Exhibit 99.1. Also incorporated by reference is certain supplemental information not included in the press release, attached as Exhibit 99.2. This information shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and is not incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. Item 9.01. Financial Statements and Exhibits. (d) Exhibits Exhibit 99.1 Press release issued October 29, 2026, regarding earnings for the third quarter of 2026 Exhibit 99.2 Certain supplemental information not included in the press release Exhibit 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Merck & Co., Inc. Date: October 29, 2026 By: /s/ Kelly E. W. Grez Kelly E. W. Grez Corporate Secretary