Transaction in Own Shares

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

BP p.l.c. - 26 May 2010

BP p.l.c. announces that on 24 May 2010 it transferred to participants in its employee share schemes 11,736 ordinary shares at prices between 420.00 pence and 500.00 pence per share. These shares were previously held as treasury shares.

Following the above transaction, BP p.l.c. holds 1,858,393,115 ordinary shares in Treasury, and has 18,788,700,351 ordinary shares in issue (excluding Treasury shares).

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