BigCommerce (BIGC) 10-Q 2022 Q3 Quarterly report

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL 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 of BigCommerce Holdings, Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 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.

Date: November 4, 2022	By:	/s/ Brent Bellm
		Brent Bellm
		Chief Executive Officer (Principal Executive Officer)
Date: November 4, 2022	By:	/s/ Robert Alvarez
		Robert Alvarez
		Chief Financial Officer (Principal Financial Officer)