BLZE · Quarterly Report (Form 10-Q) · Filed August 7, 2025

Backblaze Inc — 10-Q exhibit

ex321blze10-q20250630.htm

Document

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002.

In connection with the Quarterly Report on Form 10-Q of Backblaze, Inc. (the “Company”) for the quarter ending June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gleb Budman, the Chief Executive Officer and Chairperson of the Company, hereby certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge that:

(1)the Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended, and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: August 7, 2025			/s/ Gleb Budman
			Gleb Budman
			Chief Executive Officer and Chairperson
			(Principal Executive Officer)

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