Transaction in Own Shares

BP p.l.c.

Transaction in own shares

BP p.l.c. announces that on 9 January 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: 9 January 2012

Number of ordinary shares transferred: 1,287

Highest transfer price per share: £5.00

Lowest transfer price per share: £4.55

Following the above transfer, BP p.l.c. holds 1,837,505,058 ordinary shares in treasury, and has 18,975,934,039 ordinary shares in issue (excluding treasury shares).

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