Item 6. Exhibits

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Item 6. Exhibits


Exhibit Number						Description of Exhibit








31.1						Certification of Chief Executive Officer required by Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2						Certification of Chief Financial Officer required by Exchange Act Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1						Certification of Chief Executive Officer required by Exchange Act Rules 13a-14(b) and 15d-14(b), as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**
32.2						Certification of Chief Financial Officer required by Exchange Act Rules 13a-14(b) and 15d-14(b), as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.**
101.INS						XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH						XBRL Taxonomy Extension Schema Document.
101.CAL						XBRL Taxonomy Calculation Linkbase Document.
101.DEF						XBRL Taxonomy Definition Linkbase Document.
101.LAB						XBRL Taxonomy Label Linkbase Document.
101.PRE						XBRL Taxonomy Presentation Linkbase Document.
104						Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
						The Registrant agrees, pursuant to Item 601(b)(4)(iii)(A) of Regulation S-K, to furnish to the Commission, upon request, a copy of each instrument with respect to long-term debt of the Registrant or its consolidated subsidiaries.

** Certification is not deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liability of that section. Such certification is not deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act except to the extent that the registrant specifically incorporates it by reference.

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, thereunto duly authorized.




Date:	October 31, 2025	THERMO FISHER SCIENTIFIC INC.



		/s/ Stephen Williamson
		Stephen Williamson
		Senior Vice President and Chief Financial Officer



		/s/ Joseph R. Holmes
		Joseph R. Holmes
		Vice President and Chief Accounting Officer

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