Transaction in Own Shares

BP p.l.c. - Transaction in Own Shares

BP p.l.c. - 4 April 2011

BP p.l.c. announces that it transferred to participants in its employee share schemes 444,961 ordinary shares on 1 April 2011 at prices between 455.0 pence per share and 477.1 pence per share. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,847,425,798 ordinary shares in Treasury, and has 18,866,517,036 ordinary shares in issue (excluding Treasury shares).

Enquiries: Fergus MacLeod, BP p.l.c. Tel: 020 7496 4632