Huaneng Power International, Inc. filed its Monthly Return for the period ended 31 May 2026, confirming that both its authorised and issued share capital remained unchanged during the month.

Authorised / Registered Capital • Total authorised share capital stood at 15.70 billion shares with a par value of RMB 1 each—unchanged from the prior month.  • H-share tranche: 4.70 billion shares.  • A-share tranche: 11.00 billion shares.

Issued Shares and Treasury Position • H-shares listed in Hong Kong: 4.70 billion shares in issue; no treasury shares were held or cancelled. • A-shares listed on the Shanghai Stock Exchange: 11.00 billion shares in issue; no treasury shares were held or cancelled. • No share options, warrants, convertibles, or other equity-linked instruments were issued, exercised, or outstanding during the month.

Public Float Compliance • The company confirmed compliance with the Hong Kong Stock Exchange’s minimum public-float requirement (5% of total issued H-shares).

No Other Movements • The filing reported no repurchases, cancellations, allotments, or other capital movements for May 2026.

The disclosure indicates a stable capital structure with full regulatory compliance and no dilution for existing shareholders during the reporting period.