SAO PAULO, Feb 26 (Reuters) - Shares in state-controlled Banco do Brasil SA were down more than 5% in late afternoon trading on Friday in Sao Paulo, as Brazilian media reported that Chief Executive André Brandao may leave the bank. Brazilian newspapers O Estado de S. Paulo, O Globo and Valor Economico reported that Brandao, a former HSBC executive who has been at the helm of the bank for five months, would resign after coming under pressure from right-wing President Jair Bolsonaro. Banco do Brasil and the presidential palace did not immediately respond to requests for comment. (Reporting by Tatiana Bautzer; additional reporting by Anthony Boadle in Brasilia; editing by Jonathan Oatis)