Cornerstone Technologies Holdings Limited (Cornerstone Tec; 08391) filed its Monthly Return for the period ended 30 June 2026 with Hong Kong Exchanges and Clearing on 6 July 2026. Key disclosures are as follows:

Authorised and Issued Capital • Authorised share capital remained unchanged at 100 billion ordinary shares with a par value of HKD 0.01, equivalent to HKD 1.00 billion. • Issued share capital stood at 1,049.62 million ordinary shares, with no movement in issued or treasury shares during the month. • The company confirmed compliance with the minimum 25 per cent public-float requirement.

Equity Incentives in Force • Share options outstanding totalled 80.65 million units: ‑ 20.85 million options (exercise price: HKD 0.54; granted 28 Jan 2021) ‑ 1.60 million options (HKD 0.85; granted 17 Jun 2022) ‑ 58.20 million options (HKD 0.79; granted 17 Nov 2022) • A further 1.16 million shares remain available for future grants under the 2018 Share Option Scheme. • No options were exercised in June; therefore, no funds were raised from option conversions during the month.

Outstanding Warrants • Two tranches of unlisted warrants are in place: ‑ 11.00 million shares at a HKD 0.50 subscription price, expiring 6 Nov 2027. ‑ 100.00 million shares at a HKD 0.80 subscription price, expiring 15 Oct 2028. • No warrant exercises or related share issues occurred in June.

Convertible Notes • Unlisted convertible notes with an aggregate principal of HKD 146.90 million remain outstanding, all convertible at HKD 0.50 per share: ‑ HKD 95.60 million (potentially 191.20 million shares) approved on 25 Oct 2024. ‑ HKD 51.30 million (potentially 102.60 million shares) approved on 25 Oct 2024. • No conversions were recorded during the month.

Aggregate Potential Dilution If all outstanding options, warrants and convertible notes were fully exercised or converted, up to 486.61 million new shares could be issued, representing approximately 46.4 per cent of the current issued share base.

No other share issues, repurchases, redemptions or treasury-share movements were reported for June 2026.