Robo.ai Inc-B美股招股说明书(2026-01-02版)

Prospectus Supplement No.7(To Prospectus DatedSeptember 25, 2025) Robo.ai Inc. Up to 295,145,910 Class B Ordinary Shares This prospectus supplement is being filed to update and supplement the information contained in the prospectus datedSeptember 25, 2025, which forms a part of our registration statement on FormF-1 (Registration No.333-289926),as amended andsupplemented, with the information contained in our current report on Form6-K furnished with the U.S. Securities and ExchangeCommission on January 2, 2026. The prospectus relates to the potential offer and sale from time to time by the selling securityholdersnamed therein or their pledgees, donees, transferees, assignees, or other successors in interest (that receive any of the securities as a This prospectus supplement updates and supplements the information in the prospectus and is not complete without, and maynot be delivered or utilized except in combination with, the prospectus, including any amendments or supplements thereto. Thisprospectus supplement should be read in conjunction with the prospectus and if there is any inconsistency between the information Our Class B ordinary shares are listed on the Nasdaq Stock Market LLC, or Nasdaq, under the ticker symbol “AIIO.” OnDecember 31, 2025, the closing price of our Class B ordinary shares on Nasdaq was US$0.3051. We may further amend or supplement the prospectus from time to time by filing amendments or supplements as required. Youshould read the entire prospectus, this prospectus supplement, and any amendments or supplements carefully before you make your Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page17 of the prospectusfor a discussion of information that should be considered in connection with an investment in our securities. Neither the U.S. Securities and Exchange Commission nor any other regulatory body has approved or disapproved ofthese securities or determined if thisprospectus supplementor the prospectus is truthful or complete. Any representation to The date of this prospectus supplement is January 2, 2026. For the month of December 2025 INFORMATION CONTAINED IN THIS FORM 6-K REPORT Director Resignations On December 22, 2025, Robo.ai Inc., a Cayman Islands exempted company (the “Company”), received the resignation ofAaron Huainan Liao from the Company’s Board of Directors and as the Company’s Executive Global President, effective December On December 23, 2025, the Company received the resignations of Michael Cashel and Alain Batty, effective December 31,2025, each from the Company’s Board of Directors, Nomination Committee and Strategy and Environmental Social and Governance Messrs. Liao, Cashel and Batty resigned for personal reasons and not as a result of any disagreement with the Company onany matter relating to the Company’s operations, policies or practices. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed onits behalf by the undersigned, thereunto duly authorized. Date: December 31, 2025