Signing of the Deed of Merger

Banco Comercial Portugues S.A. 26 June 2000 BANCO COMERCIAL PORTUGUES, S.A. Sociedade aberta Sede: Rua Julio Dinis, 705/719 - 4050 PORTO Capital Social: 1.808.038.871 Euro Matriculada na Conservatoria do Registo Comercial do Porto sob o no. 40 043 Pessoa Colectiva no. 501 525 882 Banco Comercial Portugues, S.A. (BCP, NYSE: BPC, BCPPRA), has announced that signing of the deed of the merger of Banco Mello, S.A. and Banco Portugues do Atlantico, S.A. by incorporation into BCP has occurred as at 23 June, 2000. Under the terms and conditions of the merger, BCP has issued 234,933,119 ordinary shares, pertaining to the following breakdown - 227,822,849 new shares with nominal value of 1 euro each, as consideration for 284,778,562 shares of Banco Portugues do Atlantico, S.A.; - 7,110,270 new shares with nominal value of 1 euro each, as consideration for 3,338,155 shares of Banco Mello, S.A. Following this issuance, BCP share capital totals 2,042,971,990 euro. The shares of the incorporated companies will cease trading at Bolsa de Valores de Lisboa e Porto as at 27 June, 2000 (last day). BCP shares are expected to be delivered to shareholders through 7 June, 2000, their listing date. For further information: Rui Lopes Banco Comercial Portugues Tel: +35 121 321 1081 Kevin Soady/Toby Moore Citigate Dewe Rogerson Tel: +44 20 7638 9571