19 March 2026—In connection with the proposed privatisation of ENN Natural Gas Co., Ltd. by way of a scheme of arrangement, the Executive under the Hong Kong Code on Takeovers and Mergers received a Rule 22 disclosure detailing Morgan Stanley Capital Services LLC’s recent dealings in the target’s A shares.

Morgan Stanley Capital Services LLC, classified as a Class (5) associate of the offeror and ultimately owned by Morgan Stanley, executed two unsolicited client-facilitation derivative transactions on 18 March 2026:

• Purchase of 100 A shares via an “other” derivative product maturing on 31 August 2027 at a reference price of RMB22.07 per share, for total consideration of RMB2,207.00. • Sale of 100 A shares in an identical derivative product with the same maturity date and reference price, also for RMB2,207.00.

The opposing trades left Morgan Stanley Capital Services with a resultant balance of zero reference securities. All dealings were conducted for the firm’s own account and settled in renminbi.

The disclosure forms part of the ongoing regulatory reporting requirements during the privatisation process of ENN Natural Gas Co., Ltd., whose Hong Kong-listed affiliate is ENN ENERGY (02688).