UNISOUND AI Technology Co., Ltd. (Stock Code: 09678) has issued a notice to convene its 2026 first extraordinary general meeting (EGM) at 10:00 a.m. on Wednesday, 8 April 2026. The on-site meeting will be held in the company’s conference room at Building N6, BBMG Intelligent Manufacturing Workshop, No. 27 Jiancaicheng Middle Road, Haidian District, Beijing.

Key agenda • Special Resolution: Shareholders will consider and, if deemed appropriate, approve amendments to the Articles of Association and authorize subsequent registration of changes with the relevant industry and commerce authority.

Shareholder logistics • Record date: Only H-shareholders whose names appear on the register at the close of business on Wednesday, 8 April 2026 are entitled to attend and vote. • Book-closure period: The H-share register will be closed from Tuesday, 31 March 2026 to Wednesday, 8 April 2026 (both days inclusive). No share transfers will be processed during this window. • Cut-off for share transfers: Completed transfer documents must reach Tricor Investor Services Limited (17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong) by 4:30 p.m. on Monday, 30 March 2026.

Proxy and voting arrangements • Shareholders may appoint one or more proxies; forms and supporting documents must be lodged at the designated addresses no later than 10:00 a.m. on Tuesday, 7 April 2026. • All resolutions will be decided by poll in accordance with Hong Kong Listing Rules, and results will be published on the company website (www.unisound.com) and the HKExnews portal (www.hkexnews.hk).

Administrative notes • Attendees should present valid identification and bear their own travel and accommodation expenses. • The EGM is expected to last half a day.

Board composition (as at notice date) • Executive Directors: Dr. Liang Jia’en, Dr. Huang Wei, Dr. Kang Heng, Dr. Li Xiaohan, Dr. Liu Shengping • Non-Executive Director: Mr. Li Zhichao • Independent Non-Executive Directors: Mr. Hu Jianjun, Dr. Fan Jian, Dr. Jin Huihua, Dr. Zhang Kun