
(Mark One)☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2025OR☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THETRANSITION PERIOD FROMTOCommission File Number 001-39204AEVA TECHNOLOGIES, INC.(Exact name of Registrant as specified in its Charter)Delaware84-3080757(State or other jurisdiction ofincorporation or organization)(I.R.S. EmployerIdentification No.)555 Ellis StreetMountain View, CA94043(Address of principal executive offices)(Zip Code)Registrant’s telephone number, including area code: (650) 481-7070 Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES☐NO☒ Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during thepreceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past90 days. YES☒NO☐ Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of RegulationS-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). YES☒NO☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2of the Exchange Act. Large accelerated filer☐Accelerated filer☐Non-accelerated filer☒Smaller reporting company☒Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control overfinancial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its auditreport.☐If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐ Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES☐NO☒ The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, as of June 30, 2025, based on the closing price pershare of its common stock on The Nasdaq Stock Market on such date was $1,197 million. The number of shares of Registrant’s common stock outstanding as of March 10, 2026, was 62,947,689. Table of Contents PART I Item 1.BusinessItem 1A.Risk FactorsItem 1B.Unresolved Staff CommentsItem 1C.CybersecurityItem 2.PropertiesItem 3.Legal ProceedingsItem 4.Mine Safety Disclosures PART IIItem 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of EquitySecurities50Item 6.[Reserved]50Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations51Item 7A.Quantitative and Qualitative Disclosures About Market Risk59Item 8.Financial Statements and Supplementary Data60Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure93Item 9A.Controls and Procedures93Item 9B.Other Information94Item 9C.Disclosure Regarding Foreign Jurisdictions that Prevent Inspections94 PART III Item 10.Directors, Executive Officers and Corporate Governance95Item 11.Executive Compensation95Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters95Item 13.Certain Relationships and Related Transactions, and Director Independence95Item 14.Principal Accounting Fees and Services95 PART IV Item 15.Exhibits, Financial Statement Schedules96Item 16.Form 10-K Summary96 PART I SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, asamended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)regarding future events and our future results that are subject to the safe harbors created under the Securities Act and the ExchangeAct. All statements contained in this report other than statements of historical fact, including stat