Hong Kong, 26 May 2026—ENN Natural Gas Co. Ltd. released a Rule 22 disclosure detailing hedging-related trades executed by UBS AG on 22 May 2026 during the company’s proposed privatisation by way of scheme of arrangement.

UBS AG, acting as an exempt principal trader connected with the offeree, executed five client-driven Delta 1 and equity-related hedging transactions in ENN Natural Gas A shares:

• Purchases: 290,300 shares for a total consideration of RMB 5.81 million. • Sales: 480,600 shares for a total consideration of RMB 9.59 million.

The activity resulted in a net sale of 190,300 shares, producing net proceeds of RMB 3.78 million.

Price range details: • Highest price paid on purchases: RMB 20.3114 per share; lowest price paid: RMB 19.8140. • Highest price received on sales: RMB 20.3650 per share; lowest price received: RMB 19.7800.

UBS AG carried out the transactions for its own account and is ultimately owned by UBS Group AG.