Transaction in Own Shares

BP p.l.c.

Transaction in own shares

BP p.l.c. announces that on 14 March 2013 it transferred the following number of ordinary shares, which were previously held as treasury shares, to participants in its employee share schemes:

Date of transfer: 14 March 2013

Number of ordinary shares transferred: 683,275

Transfer price per share: £4.5070

Following the above transfer, BP p.l.c. holds 1,810,933,645 ordinary shares in treasury, and has 19,165,986,038 ordinary shares in issue (excluding treasury shares).

This announcement is made in accordance with the requirements of Listing Rule 12.6.4.