GenScript Biotech Corporation has dispatched its 2026 AGM circular outlining several key resolutions to be tabled on 5 June 2026 at the company’s Jiangning District headquarters.

General Mandates • Share issuance mandate: Directors will request authority to allot, issue or transfer out of treasury up to 20% of the company’s issued share capital (excluding treasury shares) as at the meeting date. Based on the 2,188,076,343 shares outstanding on 9 April 2026, this represents a ceiling of 437.62 million new or treasury shares. • Share buy-back mandate: The Board seeks power to repurchase up to 10% of issued shares, equal to 218.81 million shares, during the mandate period. • Extension mandate: Shares repurchased under the 10% authority may be added to the 20% issuance limit, potentially lifting aggregate headroom to 30%. Management states it has no current plans for sizeable equity issues beyond existing option and RSU schemes.

Directors up for Re-election Four directors will retire and offer themselves for re-election: 1) Chairman and Executive Director Robin Meng – responsible for strategy; holds 358,795 shares. 2) Co-founder & Executive Director Dr Frank Zhang – leads strategic development; deemed interested in 801.56 million shares (36.63% stake via GS Corp). 3) Executive Director Dr Li Zhu – oversees strategy; holds 1.06 million shares plus options/RSUs totalling 1.36 million underlying shares. 4) Independent Non-Executive Director Dr Victor Shi – chairs the Remuneration Committee.

Proposed Charter Amendments Shareholders will vote on replacing the current memorandum and articles with a fifth amended version to: • Align with HKEX Listing Rule updates on hybrid/electronic meetings, treasury shares and uncertificated securities. • Introduce provisions for electronic communications, voting and share registration via the UNSRT System. • Reflect Cayman Islands Companies Act changes and housekeeping updates.

Other AGM Business • Adoption of FY 2025 audited financial statements. • Re-appointment of Ernst & Young as external auditor. • Register of members closure: 2–5 June 2026 (both days inclusive); shareholders must lodge transfers by 4:30 p.m. on 1 June 2026. • All AGM resolutions will be decided by poll; treasury shares, if any, will abstain from voting.

Impact on Control and Public Float Full utilisation of the buy-back mandate would raise the combined deemed stake of major shareholder GS Corp (and parties acting in concert) from 36.63% to 40.70%, triggering a mandatory offer threshold under Hong Kong’s Takeovers Code; the Board indicates it will not execute repurchases to such an extent. The company also pledges to maintain at least 25% public float in compliance with Listing Rules.

Shareholders are urged to return proxy forms to Computershare Hong Kong Investor Services by 9:30 a.m. on 3 June 2026 if unable to attend the meeting in person.