Hong Kong, 9 June 2026—The Executive received a Rule 22 disclosure indicating that UBS AG, an exempt principal trader connected with ENN Natural Gas Co. Ltd., carried out multiple hedging transactions in the company’s A shares on 8 June 2026. The dealings were undertaken for UBS AG’s own account to hedge Delta 1 and other equity-related products generated by wholly unsolicited client-driven orders amid ENN Natural Gas’s proposed privatisation by scheme of arrangement.

Transaction summary • Total turnover: RMB 16.89 million. • Purchases: 182,500 shares for RMB 3.46 million. • Sales: 706,800 shares for RMB 13.43 million. • Net result: a disposal of 524,300 shares, generating net proceeds of approximately RMB 9.97 million.

Price metrics • Highest traded price: RMB 19.29 per share. • Lowest traded price: RMB 18.91 per share.

UBS AG is ultimately owned by UBS Group AG and qualifies as an exempt principal trader under the Hong Kong Code on Takeovers and Mergers. All transactions were executed in renminbi and relate to A shares of ENN Natural Gas. The disclosure forms part of ongoing reporting requirements during the company’s privatisation process.