Hong Kong, 11 March 2026 — CITIC Securities Company Limited, a Class (5) associate of the offeror in the ongoing privatisation of ENN Natural Gas Co., Ltd., has filed dealings information under Rule 22 of the Hong Kong Code on Takeovers and Mergers.

Transaction overview • Date: 10 March 2026 • Securities: A-share ordinary shares of ENN Natural Gas Co., Ltd. • Nature: ETF-related portfolio adjustments carried out for CITIC Securities’ own account.

Deal specifics 1. Creation of new index-tracking ETFs – Action: Sale – Volume: 200 shares – Total proceeds: RMB 4,182 – Price: RMB 20.91 per share (single-price trade)

2. Dealing in pre-existing index-tracking ETFs – Action: Purchase – Volume: 100 shares – Total consideration: RMB 2,106 – Price: RMB 21.06 per share (single-price trade)

Strategic context The transactions represent less than 1% of ENN Natural Gas’s issued share capital and account for under 20% of the value of the relevant ETF baskets, indicating they are routine index-related adjustments rather than directional bets. The disclosure is required because CITIC Securities is an associate of the offeror in the privatisation by way of scheme of arrangement.

No additional details on the privatisation timetable or terms were provided in the filing.