Hong Kong, 27 May 2026—A public disclosure submitted under Rule 22 of the Hong Kong Code on Takeovers and Mergers shows that Wellington Management Group LLP, a class (6) associate of ENN Energy Holdings Limited, marginally increased its shareholding in the offeree company through market transactions conducted on 27 May 2026.

• Transaction summary – Purchase: 165,700 shares at an average price of HK$55.7082 per share, amounting to approximately HK$9.23 million. – Sales: 916 shares (261 shares at HK$54.9341 and 655 shares at HK$55.1912) for total proceeds of about HK$0.05 million. – Net position: +164,784 shares, representing a net investment of roughly HK$9.18 million.

• Post-transaction holding – Shares held: 70.92 million. – Ownership: 6.26 % of ENN Energy’s issued share capital, up from about 6.24 % prior to the trades.

The dealings were executed on a US exchange for the accounts of Wellington Management Group LLP’s discretionary investment clients. The investment firm is ultimately owned by Wellington Management Company LLP.

These transactions form part of the ongoing disclosure requirements related to the proposed privatisation of ENN Energy by way of a scheme of arrangement.