Announcement on Abnormal Fluctuations in Stock Trading

Earlier from Inner Mongolia MengDian HuaNeng Thermal Power

• Announcement on Attending Online Collective Reception Day for Investors of Listed Companies in Inner Mongolia Jurisdiction in 2026May 23
• Notice on Convening the 2025 Annual General MeetingMay 12
• Announcement on Convening Performance Briefing for 2025 and Q1 2026May 7
• Announcement on Purchasing Liability Insurance for Directors, Supervisors and Senior Management MembersApr 23
• Announcement on Implementation of Change of Securities AbbreviationMar 4

Later from Inner Mongolia MengDian HuaNeng Thermal Power

• Announcement on Repurchase and Cancellation of Compensation Shares for Performance Commitments to Reduce Registered Capital and Notice to CreditorsJun 3
• Notice on Convening the 1st Extraordinary General Meeting in 2026Jun 13
• Announcement on Resolutions of the 1st Meeting of the 12th Board of DirectorsJul 1
• Announcement on Implementation of Dividend Distribution for 2025Jul 21
• Announcement on the Listing and Trading of Certain Restricted Shares in Connection with the Asset Acquisition via Share Issuance and Cash Payment, Raising of Supporting Funds and Related Party TransactionAug 8