BP p.l.c.

Transaction in own shares

BP p.l.c. announces that on 14 June 2012 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 June 2012

Number of ordinary shares transferred:             706,161

Transfer price per share:                                  £4.0905

Following the above transfer, BP p.l.c. holds 1,832,609,913 ordinary shares in treasury, and has 19,022,381,942 ordinary shares in issue (excluding treasury shares).

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