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 Annual Report of Apogee Enterprises, Inc. (the “Company”) on Form 10-K for the period ended February 25, 2023, as filed with the Securities and Exchange Commission (the “Report”), I, Ty R. Silberhorn, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant §906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report 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 Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Ty R. Silberhorn

Ty R. Silberhorn
Chief Executive Officer

Date: April 21, 2023