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Exhibit 13.1

CERTIFICATION

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of GLOBALFOUNDRIES Inc. (the “Company”), does hereby certify, to such officer’s knowledge, that:

1.The Annual Report on Form 20-F for the year ended December 31, 2025 (the “Form 20--F”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Form 20-F fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: February 27, 2026

By:			/s/ Tim Breen
Name:			Tim Breen
Title:			Chief Executive Officer

Date: February 27, 2026

 

By:			/s/ Sam Franklin
Name:			Sam Franklin
Title:			Chief Financial Officer