TMO: Financial results

Item 2.02 Results of Operations and Financial Condition. On October 21, 2026, the Registrant announced its financial results for the fiscal quarter ended September 26, 2026. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Form 8-K and incorporated herein by reference. The information contained in this report and exhibits hereto shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits 99.1 Press Release dated October 21, 2026 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 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. THERMO FISHER SCIENTIFIC INC. Date: October 21, 2026 By: /s/ Joseph R. Holmes Joseph R. Holmes Vice President and Chief Accounting Officer 3