Amendment to Statement of Changes in Beneficial Ownership (Form 4/A)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Plavan Matthew T 2. Issuer Name and Ticker or Trading Symbol Origin Materials, Inc. [ORGN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CFO and COO (Last) (First) (Middle) C/O ORIGIN MATERIALS, INC., 930 RIVERSIDE PARKWAY, SUITE 10 3. Date of Earliest Transaction (Month/Day/Year) 03/04/2026 (Street) WEST SACRAMENTO, CA 95605 4. If Amendment, Date Original Filed (Month/Day/Year) 03/05/2026 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/04/2026 A 32,000(1) A $ 0 1,340,231 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Plavan Matthew T C/O ORIGIN MATERIALS, INC. 930 RIVERSIDE PARKWAY, SUITE 10 WEST SACRAMENTO, CA 95605			CFO and COO

Signatures

Matthew T. Plavan, by /s/ Joshua C. Lee, Attorney-in-Fact		04/13/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Reporting Person earned 32,000 shares upon the satisfaction of the performance condition of certain performance stock units granted to the Reporting Person on February 26, 2025. The performance conditions were deemed to have been 40% achieved on March 4, 2026. One-third of these stock units vested as of March 4, 2026, one-third will vest on January 1, 2027 and one-third will vest on January 1, 2028, subject to the Reporting Person's continued service.
Remarks: This Form 4A is being filed to report a transaction that was erroneously omitted from the original filing. The numbers reported on this form do not reflect a reverse split effective on 3/19/2026.

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