COMPLETION OF PLACING OF NEW CLASS B SHARESUNDER GENERAL MANDATE

Hong Kong Exchanges and Clearing Limited The Stock Exchange of Hong Kong Limited and Hong Kong Securities Clearing Company Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.This announcement is for information purposes only and does not constitute an invitation or offer to acquire purchase or subscribe for any securities of the Company.This announcement is not for distribution directly or indirectly in or into the United States.This announcement does not constitute or form a part of any offer or solicitation to purchase or subscribe for securities in the United States. The Company’s shares mentioned in this announcement have not been and will not be registered under the United States Securities Act of 1933 as amended (the “Securities Act”) and may not be offered or sold in the United States except pursuant to registration or an exemption from the registration requirements of the Securities Act. The Company’s shares mentioned herein are being offered and sold (i) solely to qualified institutional buyers pursuant to an exemption from registration under Rule 144A of the Securities Act and (ii) outside the United States in offshore transactions in accordance with Regulation S under the Securities Act. No public offering of the Company’s shares will be made in the United States.SenseTime Group Inc. (A company controlled through weighted voting rights and incorporated in the Cayman Islands with limited liability) (Stock Codes: 0020 (HKD Counter) and 80020 (RMB Counter)) COMPLETION OF PLACING OF NEW CLASS B SHARES UNDER GENERAL MANDATE Placing Agents (in no particular order) – 1 –Reference is made to the announcement of SenseTime Group Inc. (the “Company”) dated June 21 2024 in respect of the placing of new Class B Shares under general mandate (the “Placing Announcement”). Capitalised terms used herein shall have the same meanings as those defined in the Placing Announcement unless otherwise specified.COMPLETION OF PLACING OF NEW CLASS B SHARES UNDER GENERAL MANDATE The Board is pleased to announce that all the conditions set out in the Placing Agreement have been fulfilled and the Placing Completion took place on June 27 2024 in accordance with the terms of the Placing Agreement.A total of 1673446000 Placing Shares have been successfully placed by the Placing Agents to no fewer than six Placees at the Placing Price of HK$1.20 per Placing Share pursuant to the terms and conditions of the Placing Agreement representing (i) approximately 6.45% of the number of existing issued Class B Shares and approximately 5.00% of the number of issued Shares immediately before the Placing Completion; and (ii) approximately 6.06% of the number of issued Class B Shares and approximately 4.76% of the number of existing issued Shares as enlarged by the allotment and issue of the Placing Shares.To the best of the Directors’ and the Placing Agents’ knowledge information and belief having made all reasonable enquiries (i) each of the Placees and their respective ultimate beneficial owner(s) (where applicable) is an Independent Third Party; and (ii) none of the Placees has become a substantial shareholder (as defined in the Listing Rules) of the Company upon the Placing Completion.The net proceeds from the Placing after deducting the Placing commission and other relevant costs and expenses of the Placing amounted to approximately HK$1995 million.The Company intends to use such net proceeds mainly for further enhancing the scale of the Company’s industry leading AI infrastructure – SenseCore supporting the further development of generative AI including large model research and product development and for the purpose of general working capital of the Company.As disclosed in the Placing Announcement following the Placing Completion the Company will make filings with the regulatory authorities in the PRC in accordance with the relevant applicable laws and regulations including the CSRC Filings.EFFECTS OF THE PLACING ON SHAREHOLDING STRUCTURE OF THE COMPANY Following the Placing Completion and as at the date of this announcement the number of the total issued Shares of the Company is 35142371000 Shares comprising 7520115072 Class A Shares and 27622255928 Class B Shares.– 2 –The table below sets out a summary of the shareholding structure of the Company (i) immediately before the Placing Completion; and (ii) immediately upon the Placing Completion: Immediately before Immediately upon the Placing Completion the Placing Completion Approximate Approximate percentage of percentage of Number of total issued Number of total issued Shares Shares (%) Shares Shares (%) Class A Shares(1) 7520115072 22.47 7520115072 21.40 Class B Shares Placees – – 1673446000 4.76 Other Class B Shareholders 25948809928 77.53 25948809928 73.84 Sub-total of Class B Shares 2594880992 8 77.5 3 2762225592 8 78.6 0 Total 3346892500 0 100.0 0 3514237100 0 100.0 0 Notes: (1) Among the 7520115072 Class A Shares 6906080602 Class A Shares were held by Prof. Tang Xiao’ou through Amind Inc. prior to his passing on December 15 2023. Upon the passing of Prof. Tang Xiao’ou the weighted voting rights in the 6906080602 Class A Shares held by Amind Inc. ceased and such Class A Shares are expected to be converted into Class B Shares on one-to-one basis. (2) The percentage figures above have been rounded off to the nearest second decimal place. The Directors confirm that immediately after the Placing Completion the public float of the Company remains no less than 25% of the Company’s issued share capital as enlarged by the Placing.By order of the Board SenseTime Group Inc.商汤集团股份有限公司 Dr. Xu Li Executive Chairman Chief Executive Officer Hong Kong June 27 2024 As at the date of this announcement the Board comprises Dr. Xu Li Dr. Wang Xiaogang Mr. Xu Bing and Dr. Lin Dahua as executive Directors; Ms. Fan Yuanyuan as non-executive Director; Prof. Xue Lan Mr. Lyn Frank Yee Chon and Mr. Li Wei as independent non- executive Directors.–3–