| SC 13D/A | 2009-05-20 | CENTENNIAL ENERGY PARTNERS LLC | TESCO CORP | 2,390,476 | 6.4% | EDGAR |
| SC 13G/A | 2009-05-20 | CENTENNIAL ENERGY PARTNERS LLC | TESCO CORP | 2,390,476 | 6.4% | EDGAR |
| SC 13G/A | 2009-02-13 | KEELEY ASSET MANAGEMENT CORP | TESCO CORP | 2,714,616 | 7.2% | EDGAR |
| SC 13G/A | 2009-02-09 | COLUMBIA WANGER ASSET MANAGEMENT LP | TESCO CORP | 2,547,300 | 6.8% | EDGAR |
| SC 13G | 2009-02-09 | SELZ CAPITAL LLC | TESCO CORP | 1,747,000 | 4.7% | EDGAR |
| SC 13G/A | 2009-01-30 | ROYCE & ASSOCIATES LLC | TESCO CORP | 5,400,905 | 14.4% | EDGAR |
| SC 13D | 2008-08-28 | CENTENNIAL ENERGY PARTNERS LLC | TESCO CORP | 2,390,476 | 6.4% | EDGAR |
| SC 13G/A | 2008-02-14 | HOPLITE CAPITAL MANAGEMENT LLC | TESCO CORP | 1,143,300 | 3.1% | EDGAR |
| SC 13G | 2008-02-14 | KEELEY ASSET MANAGEMENT CORP | TESCO CORP | 2,439,161 | 6.6% | EDGAR |
| SC 13G/A | 2008-02-06 | ROYCE & ASSOCIATES LLC | TESCO CORP | 4,101,205 | 11.1% | EDGAR |
| SC 13G | 2008-01-31 | SELZ CAPITAL LLC | TESCO CORP | 2,122,000 | 5.8% | EDGAR |
| SC 13G | 2008-01-23 | COLUMBIA WANGER ASSET MANAGEMENT LP | TESCO CORP | 2,783,500 | 7.6% | EDGAR |
| SC 13G/A | 2007-12-05 | ROYCE & ASSOCIATES LLC | TESCO CORP | 4,101,205 | 11.1% | EDGAR |
| SC 13G/A | 2007-01-25 | ROYCE & ASSOCIATES LLC | TESCO CORP | 4,493,800 | 12.5% | EDGAR |
| SC 13G | 2006-11-08 | HOPLITE CAPITAL MANAGEMENT LLC | TESCO CORP | 1,975,800 | 5.5% | EDGAR |
| SC 13D | 2006-05-02 | CENTENNIAL ENERGY PARTNERS L P | TESCO CORP | 2,164,702 | 6.0% | EDGAR |
| SC 13G/A | 2006-02-14 | OSS CAPITAL MANAGEMENT | TESCO CORP | 4,050,000 | 11.4% | EDGAR |
| SC 13G/A | 2006-02-06 | ROYCE & ASSOCIATES LLC | TESCO CORP | 3,608,800 | 10.2% | EDGAR |
| SC 13G/A | 2005-11-17 | OSS CAPITAL MANAGEMENT | TESCO CORP | 3,602,000 | 10.2% | EDGAR |
| SC 13G/A | 2005-02-11 | OSS CAPITAL MANAGEMENT | TESCO CORP | 2,174,200 | 6.3% | EDGAR |