Anton Oilfield Services Group will convene its Annual General Meeting at 10:00 a.m. on 27 May 2026 at 2/F, Tower A, Ali Center, Beijing. Key items on the agenda are as follows:

1. Dividend Proposal The Board will seek shareholder approval to distribute a final dividend of HK$0.0373 per share for the financial year ended 31 December 2025. Shareholders recorded on 1 June 2026 will be entitled to the payout; the register of members will be closed from 2 June to 4 June 2026 (both days inclusive).

2. Financial Statements and Auditor Shareholders will vote on adopting the audited 2025 consolidated financial statements and on re-appointing Deloitte Touche Tohmatsu as external auditor. The Board will be authorised to determine the auditor’s remuneration.

3. Board Composition Independent non-executive directors Zhang Yongyi, Zhu Xiaoping and Wee Yiaw Hin will stand for re-election. The meeting will also authorise the Board to fix directors’ remuneration.

4. Share Issuance Mandate A general mandate will be sought to allot, issue or deal with additional shares or convertible securities up to 20% of the Company’s issued share capital (excluding treasury shares) as at the date of the AGM. The mandate will remain effective until the earlier of the next AGM, the statutory deadline for holding the next AGM, or its revocation by shareholders.

5. Share Buy-back Mandate The Board also proposes a mandate to repurchase shares on the Stock Exchange of Hong Kong or other recognised exchanges, limited to 10% of issued shares (excluding treasury shares) as at the AGM date. If both the issuance and buy-back mandates are approved, the issuance mandate will be extended by the number of shares repurchased, capped at an additional 10% of issued shares.

6. Key Timetable for Voting Rights • Share transfer books close: 21–27 May 2026 (both days inclusive) • Last day to lodge transfers for AGM voting: 20 May 2026, 4:30 p.m.

Anton Oilfield’s Board currently comprises executive directors Luo Lin (Chairman), Pi Zhifeng and Fan Yonghong; non-executive director Huang Song; and independent non-executive directors Zhang Yongyi, Zhu Xiaoping, Wee Yiaw Hin and Chen Xin.