Transaction in Own Shares

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

BP p.l.c. - 14 May 2010

BP p.l.c. announces that on 13 May 2010 it transferred to participants in its employee share schemes 461,828 ordinary shares at prices between 420.00 pence and 553.90 pence per share. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,858,409,010 ordinary shares in Treasury, and has 18,788,648,546 ordinary shares in issue (excluding Treasury shares).

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