UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2026 Commission File Number 001-41631 Xiao-I Corporation (Translation of registrant’s name into English) 5/F, Building 2, No. 2570 Hechuan Road, Minhang District Shanghai, China 201101 (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: Form 20-F ☒ Form 40-F ☐ INFORMATION CONTAINED IN THIS FORM 6-K REPORT Xiao-I Corporation (the “Company”) is furnishing this Report on Form 6-K to report the issuance of a press release providing an update on the final ruling by the Supreme People’s Court of the People’s Republic of China rejecting Apple’s appeal to invalidate certain patents of the Company’s variable interest entity involved in its patent infringement lawsuit against Apple. A copy of the press release is attached hereto as Exhibit 99.1. EXHIBIT INDEX | Exhibit No. | | Description | | 99.1 | | Press Release | SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. | Date: April 1, 2026 | Xiao-I Corporation | | | | | | By: | /s/ Hui Yuan | | | | Name: | Hui Yuan | | | | Title: | Chief Executive Officer | Exhibit 99.1 Xiao-I Corporation Provides Further Update on Shanghai Xiao-I’s Patent Infringement Lawsuit Against Apple Shanghai, China, March 31, 2026 Xiao-I Corporation (NASDAQ: AIXI), a leading developer of AI solutions, today provides an additional material update on its variable interest entity (VIE)’s ongoing patent infringement lawsuit against Apple