| Date Filed | Type | Description |
| 11/20/2012 |
EFFECT
| Form EFFECT - Notice of Effectiveness |
| 11/20/2012 |
EFFECT
| Form EFFECT - Notice of Effectiveness |
| 11/15/2012 |
15-12G
| Form 15-12G - Securities registration termination [Section 12(g)] |
| 11/13/2012 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 11/13/2012 |
POS AM
| Form POS AM - Post-Effective amendments for registration statement |
| 11/13/2012 |
POS AM
| Form POS AM - Post-Effective amendments for registration statement |
| 11/06/2012 |
8-K
| Quarterly results |
| 11/05/2012 |
25-NSE
| Form 25-NSE - Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities |
| 11/05/2012 |
SC TO-T/A
| Form SC TO-T/A - Tender offer statement by Third Party: [Amend] |
| 11/05/2012 |
SC 14D9/A
| Form SC 14D9/A - Solicitation, recommendation statements: [Amend] |
| 11/02/2012 |
10-Q
| Quarterly Report for the period ended September 30, 2012 |
| 10/19/2012 |
SC TO-T/A
| Form SC TO-T - Tender offer statement by Third Party [amend] |
| 10/17/2012 |
SC TO-T/A
| Form SC TO-T - Tender offer statement by Third Party [amend] |
| 10/17/2012 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 10/16/2012 |
SC TO-T/A
| Form SC TO-T - Tender offer statement by Third Party [amend] |
| 10/09/2012 |
PREM14A
| Form PREM14A - Preliminary proxy statements relating to merger or acquisition |
| 10/05/2012 |
SC 14D9
| Form SC 14D9 - Solicitation, recommendation statements |
| 10/05/2012 |
SC TO-T
| Form SC TO-T - Tender offer statement by Third Party |
| 10/04/2012 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 09/28/2012 |
8-K
| Entry into a Material Definitive Agreement, Financial Statements and Exhibits |
| 09/28/2012 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 09/25/2012 |
SC TO-C
| Form SC TO-C - Written communication relating to an issuer or third party |
| 09/25/2012 |
SC14D9C
| Form SC14D9C - Written communication relating to third party tender offer |
| 09/25/2012 |
8-K
| Form 8-K - Current report |
| 09/25/2012 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 09/12/2012 |
8-K
| Regulation FD Disclosure, Financial Statements and Exhibits |
| 08/02/2012 |
10-Q
| Quarterly Report for the period ended June 30, 2012 |
| 08/01/2012 |
8-K
| Quarterly results |
| 06/07/2012 |
8-K
| Form 8-K - Current report |
| 05/03/2012 |
10-Q
| Quarterly Report for the period ended March 31, 2012 |
| 05/02/2012 |
8-K
| Quarterly results |
| 04/25/2012 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements |
| 04/23/2012 |
PRN
| Union Drilling Appoints Alan Roachell Vice President of HSE and Training |
| 03/08/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
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