17 March 2026—Pursuant to Rule 22 of the Hong Kong Code on Takeovers and Mergers, the Executive received a disclosure indicating that Morgan Stanley & Co. International plc, classified as a Class (5) associate connected with the offeror in the proposed privatisation of ENN Energy (02688), executed a series of unsolicited client-facilitation derivative transactions on 16 March 2026 involving the A shares of ENN Natural Gas Co., Ltd.

Key transaction details • Underlying volume: 5,000 A shares • Transaction types: 3 sales (4,800 shares) and 2 purchases (200 shares) • Notional consideration:  – Sales: RMB109.66 million at an average price of RMB22.85 per share  – Purchases: RMB4.59 million at an average price of RMB22.93 per share • Maturity/closing dates: 28 April 2026 for 200-share positions; 30 August 2027 for the 4,600-share position • Resultant derivative position: zero, indicating all positions were fully closed on trade date

Additional information Morgan Stanley & Co. International plc conducted the trades for its own account. The entity is ultimately owned by Morgan Stanley. All transactions were priced and settled in renminbi.

No further shareholdings or outstanding derivative positions remain in connection with the disclosed dealings.