| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2011-01-24 | SPROTT ASSET MANAGEMENT LP | US ENERGY CORP | 1,514,098 | 5.6% | EDGAR |
| SC 13G/A | 2010-02-16 | Corriente Advisors, LLC | US ENERGY CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2010-01-26 | SPROTT ASSET MANAGEMENT LP | US ENERGY CORP | 1,757,600 | 6.5% | EDGAR |
| SC 13G/A | 2009-02-13 | SPROTT ASSET MANAGEMENT INC | US ENERGY CORP | 1,778,500 | 7.9% | EDGAR |
| SC 13G/A | 2008-11-21 | Corriente Advisors, LLC | US ENERGY CORP | 2,258,294 | 10.1% | EDGAR |
| SC 13G/A | 2008-02-14 | GALLEON MANAGEMENT L P | US ENERGY CORP | 706,625 | 3.4% | EDGAR |
| SC 13G/A | 2008-02-13 | Corriente Advisors, LLC | US ENERGY CORP | 2,105,339 | 10.0% | EDGAR |
| SC 13G | 2007-07-13 | Corriente Advisors, LLC | US ENERGY CORP | 1,207,018 | 5.9% | EDGAR |
| SC 13G | 2007-04-26 | SPROTT ASSET MANAGEMENT INC | US ENERGY CORP | - | - | EDGAR |
| SC 13G/A | 2007-02-13 | GALLEON MANAGEMENT L P | US ENERGY CORP | 997,437 | 5.1% | EDGAR |
| SC 13G | 2007-01-09 | GALLEON MANAGEMENT L P | US ENERGY CORP | 997,437 | 5.1% | EDGAR |
| SC 13G | 2006-12-08 | SPROTT ASSET MANAGEMENT INC | US ENERGY CORP | - | - | EDGAR |
| SC 13G/A | 2006-02-13 | K2 ARBITRAGE FUND LP | US ENERGY CORP | 148,903 | 0.8% | EDGAR |
| SC 13G | 2005-03-10 | K2 ARBITRAGE FUND LP | US ENERGY CORP | 836,703 | 5.4% | EDGAR |