| |
|
|
Document Title |
Approved |
| |
|
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 1177-2012) |
February 8, 2012 |
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 1162-2012) |
February 8, 2012 |
| _Report on Number of Shareholders as of January 31, 2012 |
February 6, 2012 |
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 0787-2012) |
January 30, 2012 |
| _Compliance Report on Corporate Governance for year 2011 |
January 25, 2012 |
| _Annual summary proceeds from stock rights offering 01-25-2012 |
January 25, 2012 |
| _Certification on Petroleum Service Contracts with Department of Energy |
January 25, 2012 |
| _Certification on attendance of members of Board of Directors for year 2011 |
January 12, 2012 |
| _Certification on compliance with Manual on Corporate Governance |
January 11, 2012 |
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 0215-2012) |
January 10, 2012 |
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 0223-2012) |
January 10, 2012 |
| _Top 100 Stockholders as of December 31, 2011 |
January 10, 2012 |
| _Quarterly Progress Report SRO December 31, 2011 |
January 5, 2012 |
| _Computation of Public Ownership as of December 31, 2011 |
January 5, 2012 |
| _Report on Number of Shareholders as of December 31, 2011 |
January 5, 2012 |
| _Statement of Changes in Beneficial Ownership of Securities (Circular No. 0044-2012) |
January 3, 2012 |
|
