Bank of China Limited filed its Monthly Return for the period ended 31 May 2026, confirming that no changes occurred in either authorised or issued share capital during the month.

Authorised / registered share capital • Total authorised capital remained at RMB 422.21 billion. – A-shares: 238.59 billion shares (RMB 1 par value). – H-shares: 83.62 billion shares (RMB 1 par value). – Domestic preference shares: 1.00 billion shares across the third (730 million) and fourth (270 million) tranches, each with RMB 100 par value.

Issued shares and public float • Issued H-shares stood unchanged at 83.62 billion, with zero treasury shares. • Issued A-shares remained at 238.59 billion; no treasury stock is held. • Preference shares in issue totalled 1.00 billion, also unchanged. • The bank confirmed compliance with the Hong Kong Exchange’s 5 percent minimum public-float requirement for its H-share class.

Convertible preference shares • Third-tranche domestic preference shares (RMB 73.00 billion) and fourth-tranche preference shares (RMB 27.00 billion) are convertible into ordinary A-shares upon trigger events at RMB 3.62 per share. – Potential dilution if fully converted: 20.17 billion and 7.46 billion A-shares, respectively. • No conversions occurred in May.

Other equity movements • No share options, warrants, share repurchases, treasury-share transfers, or Hong Kong Depositary Receipts were reported.

The absence of share capital movements indicates a stable equity base for Bank of China through May 2026, while the sizeable authorised preference-share convertibles continue to represent a latent source of additional A-share issuance should contractual trigger events arise.