On 11 June 2026 ENN Natural Gas Co. Ltd. (the offeree in an ongoing privatisation by way of scheme of arrangement) received a Rule 22 disclosure from UBS AG, an exempt principal trader connected with the company under the Hong Kong Code on Takeovers and Mergers.

On 10 June 2026 UBS AG executed a series of hedging transactions in ENN Natural Gas A shares, all generated by wholly unsolicited client-driven orders:

• Purchases: 405.50 thousand shares for a total consideration of RMB7.31 million, implying an average purchase price of approximately RMB18.04 per share. • Sales: 562.20 thousand shares for RMB10.17 million, implying an average sale price of roughly RMB18.09 per share.

These trades resulted in a net disposal of 156.70 thousand shares and net proceeds of about RMB2.86 million.

Across the day’s activity, the highest price paid by UBS AG was RMB18.29 per share, while the lowest price received was RMB17.94 per share.

All dealings were conducted on UBS AG’s own account as part of hedging for Delta 1 and other equity-related products. UBS AG is ultimately owned by UBS Group AG.