Transaction in Own Shares

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

BP p.l.c. - 10 September 2010

BP p.l.c. announces that it transferred 10,173 ordinary shares on 9th September 2010 to participants in its employee share schemes at prices between 441.0 pence per share and 455.0 pence per share. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,856,221,255 ordinary shares in Treasury, and has 18,790,895,011 ordinary shares in issue (excluding Treasury shares).

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