On 19 March 2026, exempt principal trader UBS AG disclosed to the Hong Kong Takeovers and Mergers Executive a series of hedging transactions in the A-shares of ENN Natural Gas Co. Ltd., the offeree in the ongoing privatisation scheme. All trades were executed in renminbi for UBS AG’s own account and arose from wholly unsolicited, client-driven Delta 1 and other equity-related products.

Transaction summary • Purchases: 790,300 shares for a total consideration of RMB 18.05 million, with prices ranging from RMB 22.43 to RMB 23.26 per share. • Sales: 881,600 shares for a total consideration of RMB 20.11 million, at prices between RMB 22.33 and RMB 23.24 per share. • Net position: Disposal of 81,300 shares, generating net sale proceeds of approximately RMB 2.06 million.

Price dispersion • Highest trade price: RMB 23.26 per share (purchase). • Lowest trade price: RMB 22.33 per share (sale).

Regulatory context The transactions were reported under Rule 22 of the Hong Kong Code on Takeovers and Mergers in connection with the proposed privatisation by scheme of arrangement. UBS AG, ultimately owned by UBS Group AG, is classified as an exempt principal trader connected with the offeree company.

Ticker reference ENN ENERGY (02688.HK) is the Hong Kong-listed entity within the ENN group; the disclosed dealings relate specifically to the A-shares of ENN Natural Gas Co. Ltd.