UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2022 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission file number 1-8002 THERMO FISHER SCIENTIFIC INC. (Exact name of Registrant as specified in its charter) Delaware 04-2209186 (State of incorporation) (I.R.S. Employer Identification No.) 168 Thir ...