EX-32.1 4 ex321q3202510-q.htm EX-32.1
Exhibit 32.1
CERTIFICATIONS OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002
I, Matthew Prince, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of Cloudflare, Inc. for the fiscal quarter ended September 30, 2025 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Cloudflare, Inc.

Date: October 30, 2025 |  |  | /s/ Matthew Prince
|  |  | Matthew Prince
|  |  | Chief Executive Officer
|  |  | (Principal Executive Officer)

I, Thomas Seifert, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of Cloudflare, Inc. for the fiscal quarter ended September 30, 2025 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Cloudflare, Inc.

Date: October 30, 2025 |  |  | /s/ Thomas Seifert
|  |  | Thomas Seifert
|  |  | Chief Financial Officer
|  |  | (Principal Financial Officer)