EX-32.1 4 orgn-20260331xexx321.htm EX-32.1

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

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. § 1350), Matthew Plavan, Interim Chief Executive Officer, Chief Financial Officer and Chief Operating Officer of Origin Materials, Inc (the “Company”), hereby certifies that, to the best of his knowledge:

1.The Company’s Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026, 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 Exchange Act; 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: May 14, 2026			By:			/s/ Matthew Plavan
						Matthew Plavan
						Interim Chief Executive Officer, Chief Financial Officer and Chief Operating Officer
						(Principal Executive Officer and Principal Financial and Accounting Officer)

This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Origin Materials, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.