Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES‑OXLEY ACT OF 2002

REGARDING THE ANNUAL REPORT ON FORM 10‑K

FOR THE YEAR ENDED DECEMBER 31, 2016

In connection with the Annual Report of Heritage Commerce Corp (the “Company”) on Form 10‑K for the year ended December 31, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Walter T. Kaczmarek, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes‑Oxley Act of 2002, that to the best of my knowledge:

(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/ WALTER T. KACZMAREK
	Walter T. Kaczmarek
	President and Chief Executive Officer
March 3, 2017	Heritage Commerce Corp