| Date | Time | Source | Headline | Symbol | Company |
| 06/07/2011 | 6:00AM | Marketwired | American Petro-Hunter (OTCBB: AAPH) Drilling in North Oklahoma Hot-Spot | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 06/06/2011 | 1:22PM | Edgar (US Regulatory) | Post-Effective Amendment to an S-8 filing (S-8 POS) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 06/06/2011 | 1:19PM | Edgar (US Regulatory) | Post-Effective Amendment to an S-8 filing (S-8 POS) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 06/06/2011 | 6:55AM | Edgar (US Regulatory) | Amended tender offer statement by Third Party (SC TO-T/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 06/06/2011 | 6:01AM | Business Wire | Chesapeake Energy Corporation Completes Tender Offer for Bronco Drilling Company, Inc. | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 06/02/2011 | 4:21PM | Edgar (US Regulatory) | Amended Statement of Beneficial Ownership (SC 13D/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/31/2011 | 3:11PM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (SC 14D9/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/31/2011 | 3:07PM | Edgar (US Regulatory) | Amended tender offer statement by Third Party (SC TO-T/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/31/2011 | 3:01PM | Business Wire | Chesapeake Energy Corp. & Bronco Drilling Company, Inc. Announce Entry into an Agreement in Principle in Shareholder Lawsuit | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/23/2011 | 3:04PM | Edgar (US Regulatory) | Current report filing (8-K) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/20/2011 | 10:18AM | Edgar (US Regulatory) | Amended tender offer statement by Third Party (SC TO-T/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/18/2011 | 12:44PM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (SC 14D9/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/18/2011 | 12:39PM | Edgar (US Regulatory) | Amended tender offer statement by Third Party (SC TO-T/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/18/2011 | 9:42AM | Dow Jones News | Chesapeake Extends Bronco Tender Offer Amid Shareholder Suit Pact | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/18/2011 | 8:38AM | Business Wire | Chesapeake Energy Corp. & Bronco Drilling Company, Inc. Announce Entry into a Memorandum of Understanding in Shareholder Lawsuit | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/12/2011 | 3:17PM | Edgar (US Regulatory) | Statement of Beneficial Ownership (SC 13D) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/10/2011 | 3:36PM | Edgar (US Regulatory) | Current report filing (8-K) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/10/2011 | 3:30PM | Business Wire | Bronco Drilling Company, Inc. Announces Monthly Operating Results | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/09/2011 | 11:07AM | Edgar (US Regulatory) | Quarterly Report (10-Q) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/06/2011 | 6:31AM | Edgar (US Regulatory) | Current report filing (8-K) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/06/2011 | 6:30AM | Business Wire | Bronco Drilling Company, Inc. Announces First Quarter 2011 Results | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/03/2011 | 3:14PM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (SC 14D9/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 05/02/2011 | 3:49PM | Dow Jones News | Chesapeake Energy Swings To 1Q Loss On Derivatives, Lower Revenue | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/29/2011 | 4:14PM | Edgar (US Regulatory) | Amended Annual Report (10-K/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/29/2011 | 4:13PM | Edgar (US Regulatory) | Amended Annual Report (10-K/A) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/25/2011 | 4:04PM | Edgar (US Regulatory) | Statement of Beneficial Ownership (SC 13D) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/22/2011 | 3:14PM | Edgar (US Regulatory) | Written communication by the subject company relating to a third party tender offer (SC14D9C) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/22/2011 | 3:13PM | Edgar (US Regulatory) | Current report filing (8-K) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/22/2011 | 12:09PM | Dow Jones News | Facing Backlog, US Oil And Gas Producers Building Service Sides | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |
| 04/21/2011 | 10:12AM | Edgar (US Regulatory) | Statement of Beneficial Ownership (SC 13D) | NASDAQ:BRNC | Bronco Drilling Company, Inc. (MM) |