| Individual/Entity | Most Recent Trans. | Shares Owned as of Trans. Date | BERG MARK STEPHEN Officer | Sale 16-Jun-09 | 11,426 16-Jun-09 | CHEATWOOD CHRIS J Officer | Purchase 6-May-08 | 5,000 6-May-08 | DEALY RICHARD P Officer | Purchase 6-May-08 | 20,000 6-May-08 | DOVE TIMOTHY L Officer | Purchase 24-Nov-09 | 7,878 24-Nov-09 | GOBE PHILLIP A Director | Purchase 23-Nov-09 | 14,374 23-Nov-09 | GOSULE ALAN L Director | Acquisition (Non Open Market) 14-May-09 | 8,555 14-May-09 | HALL FRANK W. Officer | Ownership Statement 29-May-08 | 500 29-May-08 | HANNES WILLIAM F Officer | Purchase 6-May-08 | 7,500 6-May-08 | KELLUM DANNY L Officer | Ownership Statement 29-Apr-08 | 0 29-Apr-08 | MITCHELL ROYCE Director | Acquisition (Non Open Market) 14-May-09 | 7,055 14-May-09 | PIONEER NATURAL RESOURCES CO Beneficial Owner (10% or more) | Purchase 6-May-08 | 20,521,200 6-May-08 | PIONEER NATURAL RESOURCES GP LLC Other | Ownership Statement 29-Apr-08 | 0 29-Apr-08 | SHEFFIELD SCOTT D Officer | Purchase 6-May-08 | 12,000 6-May-08 | SMITH ARTHUR L Director | Acquisition (Non Open Market) 14-May-09 | 7,055 14-May-09 |
|