China Unicom (Hong Kong) Limited has issued a circular outlining key matters to be voted on at the Annual General Meeting (AGM) scheduled for 10:00 a.m. on 26 May 2026. The meeting will be held concurrently at Level 5, Island Shangri-La Hotel, Hong Kong, and at China Unicom Building, Beijing, with electronic participation enabled.

AGM PROPOSALS 1. Share buy-back authority • The Board seeks renewal of a general mandate to repurchase up to 10% of issued shares, excluding any treasury shares. • Based on 30.60 billion shares outstanding as of 20 April 2026, the mandate would allow the company to repurchase up to 3.06 billion shares. • Repurchases may be financed from available cash or working-capital facilities and carried out on the Hong Kong Stock Exchange or other recognised venues.

2. General mandate to issue shares • Directors propose a mandate to issue new shares not exceeding 20% of current issued share capital. • The aggregate issuance limit can be increased by the number of shares actually bought back under the above mandate, capped at an additional 10%.

3. Director re-elections • Four directors are nominated for re-election: – Executive Directors: Dong Xin (Chairman & CEO) and Tang Yongbo. – Independent Non-Executive Directors: Cheung Wing Lam Linus and Fan Chun Wah Andrew. • Biographical details and independence confirmations have been provided; both independent directors meet Listing Rule 3.13 independence requirements.

4. Final dividend • A final dividend of RMB0.1329 per share for FY 2025 is proposed, subject to shareholder approval. • Expected payment date: on or about 24 June 2026 in Hong Kong dollars. • Dividend record date: 5 June 2026; share transfer registration closes the same day.

KEY DATES • Last day to lodge share transfers for AGM attendance: 15 May 2026 (4:30 p.m.). • Register closure for AGM: 18-26 May 2026. • Proxy form deadline: 24 May 2026 (48 hours before AGM). • Register closure for dividend entitlement: 5 June 2026.

OTHER INFORMATION • No shareholder is required to abstain from voting; all resolutions will be decided by poll. • The company held no treasury shares as of the latest practicable date and conducted no share repurchases in the six months preceding 20 April 2026. • Immediate controlling shareholders Unicom BVI and Unicom Group BVI together hold 79.93% of issued shares; a full 10% buy-back would raise their aggregate holding to 88.82%, staying above the 50% threshold that triggers a mandatory offer under the Takeovers Code.

Shareholders are advised to review the circular and return proxy forms in accordance with the stated deadlines if they cannot attend the AGM in person. No souvenirs, food or beverages will be provided at the meeting.