| Date | Insider | Shares | Type | Transaction | Value* |
| 16-Oct-09 | QUINTERO ALAN Officer | 15,000 | Direct | Option Exercise at $12.31 per share. | $184,650 |
| 16-Oct-09 | QUINTERO ALAN Officer | 15,000 | Direct | Sale at $39.24 per share. | $588,600 |
| 8-Oct-09 | CAMPBELL MICHAEL ALAN Officer | 1,000 | Direct | Sale at $36.50 per share. | $36,500 |
| 8-Sep-09 | SMITH BARRY MICHAEL Officer | 1,058 | Direct | Disposition (Non Open Market) | N/A |
| 3-Sep-09 | GOLDEN JACK E Director | 2,156 | Direct | Statement of Ownership | N/A |
| 13-Aug-09 | QUINTERO ALAN Officer | 20,000 | Direct | Option Exercise at $9.44 - $29 per share. | N/A |
| 28-Mar-09 | MORRISSEY WILLIAM J Director | 3,000 | Direct | Option Exercise at $90.64 per share. | $271,920 |
| 10-Feb-09 | IRWIN JOHN R Officer | 10,000 | Direct | Acquisition (Non Open Market) | N/A |
| 1-Jan-09 | CAMPBELL MICHAEL ALAN Officer | 17,097 | Direct | Statement of Ownership | N/A |
| 26-Dec-08 | IRWIN JOHN R Officer | 1,250 | Direct | Acquisition (Non Open Market) | N/A |
| 12-Dec-08 | HOLLAND JAMES M Officer | 5,000 | Direct | Acquisition (Non Open Market) | N/A |
| 8-Dec-08 | BECK DEBORAH A Director | 2,000 | Direct | Acquisition (Non Open Market) at $15.18 per share. | $30,360 |
| 5-Dec-08 | DOTSON GEORGE S Director | 5,000 | Direct | Acquisition (Non Open Market) at $13.50 per share. | $67,500 |
| 4-Dec-08 | BURGESS ROBERT W Director | 2,000 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | BECK DEBORAH A Director | 2,000 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | DOTSON GEORGE S Director | 2,000 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | HELMERICH HANS Director | 2,000 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | MONTAGUE JAMES R Director | 2,000 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | SMITH BARRY MICHAEL Officer | 3,300 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | PRESLEY RANDAL FLOYD Officer | 3,200 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | HALL RONALD LEE Officer | 4,200 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | QUINTERO ALAN Officer | 7,300 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | IRWIN JOHN R Officer | 20,500 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | KELLEY GLEN P Officer | 6,700 | Direct | Acquisition (Non Open Market) | N/A |
| 4-Dec-08 | HOLLAND JAMES M Officer | 10,000 | Direct | Acquisition (Non Open Market) | N/A |
| 3-Dec-08 | DOTSON GEORGE S Director | 5,000 | Direct | Acquisition (Non Open Market) | N/A |
| 10-Oct-08 | BURGESS ROBERT W Director | 10,000 | Direct | Acquisition (Non Open Market) | N/A |
| 10-Oct-08 | DOTSON GEORGE S Director | 5,000 | Direct | Acquisition (Non Open Market) | N/A |
| 29-Sep-08 | DOTSON GEORGE S Director | 11,200 | Indirect | Acquisition (Non Open Market) | N/A |
| 5-Jun-08 | SMITH BARRY MICHAEL Officer | 8,348 | Direct | Statement of Ownership | N/A |
| 5-Jun-08 | PRESLEY RANDAL FLOYD Officer | 5,296 | Direct | Statement of Ownership | N/A |
| 22-Apr-08 | IRWIN JOHN R Officer | 40,000 | Direct | Option Exercise at $13.50 - $112.23 per share. | N/A |
| 18-Apr-08 | HALL RONALD LEE Officer | 8,000 | Direct | Option Exercise at $24.62 - $109.5 per share. | N/A |
| 17-Apr-08 | KELLEY GLEN P Officer | 550 | Indirect | Option Exercise at $107.77 per share. | $59,273 |
| 16-Apr-08 | KELLEY GLEN P Officer | 60,000 | Direct | Option Exercise at $15.38 - $106.19 per share. | N/A |
| 16-Apr-08 | HOLLAND JAMES M Officer | 30,000 | Direct | Option Exercise at $24.62 - $107.87 per share. | N/A |
| 15-Apr-08 | HALL RONALD LEE Officer | 5,000 | Direct | Option Exercise at $13.50 - $105.35 per share. | N/A |
| 14-Apr-08 | SMITH DARRYL ROBERT Officer | 2,500 | Direct | Option Exercise at $37.15 - $103.44 per share. | N/A |
| 1-Apr-08 | HALL RONALD LEE Officer | 9,136 | Direct | Statement of Ownership | N/A |
| 28-Mar-08 | MORRISSEY WILLIAM J Director | 3,000 | Direct | Option Exercise at $19.35 - $33.76 per share. | N/A |
| 29-Feb-08 | KELLEY GLEN P Officer | 33,200 | Direct | Option Exercise at $13.50 - $99 per share. | N/A |
| 27-Feb-08 | KELLEY GLEN P Officer | 46,800 | Direct | Option Exercise at $13.50 - $97.79 per share. | N/A |
| 21-Feb-08 | SMITH DARRYL ROBERT Officer | 6,500 | Direct | Option Exercise at $24.62 - $96.42 per share. | N/A |
| 20-Feb-08 | SMITH DARRYL ROBERT Officer | 10,000 | Direct | Option Exercise at $13.50 - $95 per share. | N/A |
| 13-Feb-08 | QUINTERO ALAN Officer | 53,500 | Direct | Option Exercise at $13.50 - $88 per share. | N/A |
| 13-Feb-08 | MORRISSEY WILLIAM J Director | 34,000 | Direct | Option Exercise at $13.66 - $87.68 per share. | N/A |
| 6-Dec-07 | BURGESS ROBERT W Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | BECK DEBORAH A Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | MORRISSEY WILLIAM J Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | DOTSON GEORGE S Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | HELMERICH HANS Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | MONTAGUE JAMES R Director | 670 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | SMITH DARRYL ROBERT Officer | 896 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | QUINTERO ALAN Officer | 7,108 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | IRWIN JOHN R Officer | 5,364 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | KELLEY GLEN P Officer | 2,236 | Direct | Acquisition (Non Open Market) | N/A |
| 6-Dec-07 | HOLLAND JAMES M Officer | 2,684 | Direct | Acquisition (Non Open Market) | N/A |