Transphorm (TGAN) 10-Q 2024 Q3 Quarterly report

Exhibit 32.1

Certifications 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 accordance with 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, Primit Parikh, President and Chief Executive Officer of Transphorm, Inc. (the “registrant”), and Cameron McAulay, Chief Financial Officer of the registrant, each hereby certifies that, to the best of their knowledge:

1.The registrant’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2023 to which this Certification is attached as Exhibit 32.1 (the “Report”), fully complies with the requirements of Section 13(a) or Section 15(d) 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 registrant.

Date:	February 20, 2024	By:	/s/ Primit Parikh
			Primit Parikh
			President and Chief Executive Officer
			(Principal Executive Officer)
			/s/ Cameron McAulay
			Cameron McAulay
			Chief Financial Officer
			(Principal Financial and Accounting Officer)