Hesai Group 2026 Interim Report

This report details the unaudited interim financial information for Hesai Group for the first six months of the fiscal year ending December 31, 2026. As a company listed on The Stock Exchange of Hong Kong Limited, Hesai Group is required to publish such a report. The interim report, prepared in accordance with Rule 13.48(1) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited, is being furnished as Exhibit 99.1 to this Form 6-K filing. The filing indicates that the registrant files annual reports under Form 20-F. The report is signed by Yifan Li, Chief Executive Officer, on September 17, 2026.