Origin Materials, Inc. (“Origin,” “Origin Materials,” or “the Company”) (Nasdaq: ORGN, ORGNW), today announced that it will release its third quarter 2025 results after market close on Thursday, November 13, 2025, to be followed by a conference call at 5:00 p.m. Eastern Time on the same day.

Interested investors and other parties can listen to a webcast of the live conference call by logging onto the Investor Relations section of the Company's website at https://investors.originmaterials.com.

The conference call can be accessed live over the phone by dialing +1-844-676-8020 (domestic) or +1-412-634-6957 (international). A telephonic replay will be available approximately three hours after the call by dialing 1-844-512-2921, or for international callers, +1-412-317-6671. The conference ID for the live call and pin number for the replay is 10202782. The replay will be available until 11:59 p.m. Eastern Time on November 27, 2025.

Origin management will incorporate responses to a selection of shareholders’ frequently asked questions during the webcast. Shareholders are invited to submit questions via the investor relations email address: ir@originmaterials.com. Please include the hashtag #askorigin in the subject line.

About Origin Materials

Origin is a technology company with a mission to enable the world’s transition to sustainable materials. Our innovations include PET caps and closures that bring recycling circularity and enhanced performance to a ~$65 billion market, specialty materials, and our patented biomass conversion platform that transforms carbon into sustainable materials for a wide range of end products. For more information, visit www.originmaterials.com.

Cautionary Note on Forward-Looking Statements

This press release contains certain forward-looking statements within the meaning of the federal securities laws. These forward-looking statements include, but are not limited to, statements regarding Origin Materials’ business strategy and estimated total addressable market, and anticipated performance characteristics of Origin’s PET caps. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements, except as required by law.

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