Amendment to Securities Purchase Agreement and Note

Origin Materials, Inc. (the "Company") entered into an Amendment to Securities Purchase Agreement and Note on December 22, 2025. This amendment modifies a previous agreement dated November 13, 2025, with an institutional purchaser regarding the issuance of senior secured convertible notes. Key changes include provisions for additional closings of Notes, up to an aggregate principal amount of $25.0 million per tranche, at the Company's request, subject to certain conditions. The amendment also allows the Company to guarantee obligations of its subsidiaries related to permitted indebtedness and sale leaseback transactions. The definition of "Permitted Indebtedness" was also amended to include additional types of debt and guarantees, with specific aggregate limits.