Transaction in Own Shares

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

BP p.l.c. - 6 May 2011

BP p.l.c. announces that it transferred to participants in its employee share schemes 2,551 ordinary shares on 5 May 2011 at prices between 394.0 pence per share and 487.0 pence per share. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,846,841,888 ordinary shares in Treasury, and has 18,867,198,596 ordinary shares in issue (excluding Treasury shares).

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