Hong Kong, 28 May 2026 – In connection with the proposed privatisation of ENN Natural Gas Co. Ltd. via a scheme of arrangement, UBS AG, an exempt principal trader connected with the offeree company, reported multiple on-exchange hedging transactions in the issuer’s A shares on 27 May 2026 under Rule 22 of the Hong Kong Code on Takeovers and Mergers.

Transaction overview • Purchases: UBS AG bought a total of 298,100 A shares for RMB-denominated consideration equivalent to USD 5.77 million, at prices ranging between USD 19.2665 and USD 19.4100 per share. • Sales: The firm sold 175,000 A shares, realising proceeds of approximately USD 3.38 million, with prices spanning USD 19.2100 to USD 19.5362 per share.

Purpose of trades All dealings were undertaken as hedging transactions for Delta 1 and other equity-related products arising from wholly unsolicited client-driven orders executed on UBS AG’s own account.

Corporate context The disclosure forms part of the ongoing privatisation exercise of ENN Natural Gas, parent to Hong Kong-listed ENN Energy (stock code 02688). UBS AG, ultimately owned by UBS Group AG, is classified as an exempt principal trader and therefore must publicly report dealings in the offeree’s securities during the offer period.

The reported activities do not alter UBS AG’s status as it continues to act independently for hedging purposes rather than proprietary investment in ENN Natural Gas. All figures are sourced directly from the company’s public disclosure dated 28 May 2026.