Transaction in Own Shares

BP p.l.c.

Transaction in own shares

BP p.l.c. announces that:

On 15 April 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: 15 April 2013

Number of ordinary shares transferred: 684,837

Transfer price per share: £4.5075

Following the above transfer, BP p.l.c. held 1,809,617,396 ordinary shares in treasury, and had 19,124,880,278 ordinary shares in issue (excluding treasury shares).

On 15 April 2013 BP p.l.c. also transferred the following number of ordinary shares, which were previously held as treasury shares, to participants in its employee share schemes:

Date of transfer: 15 April 2013

Number of ordinary shares transferred: 6,543

Highest transfer price per share: £3.94

Lowest transfer price per share: £3.16

Following the above transfers, BP p.l.c. holds 1,809,610,853 ordinary shares in treasury, and has 19,124,886,821 ordinary shares in issue (excluding treasury shares).

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