| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2012-02-14 | Stephens Investment Management, LLC | US GEOTHERMAL INC | 3,463,424 | 4.1% | EDGAR |
| SC 13G/A | 2012-02-13 | GOLDMAN SACHS GROUP INC | US GEOTHERMAL INC | 5,036,378 | 5.9% | EDGAR |
| SC 13G/A | 2011-02-25 | RULE FAMILY TRUST UDT 12 17 98 | US GEOTHERMAL INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2011-02-14 | GOLDMAN SACHS GROUP INC | US GEOTHERMAL INC | 5,036,378 | 6.4% | EDGAR |
| SC 13G/A | 2011-02-14 | Stephens Investment Management, LLC | US GEOTHERMAL INC | 4,007,436 | 5.1% | EDGAR |
| SC 13G/A | 2011-02-11 | EXPLORATION CAPITAL PARTNERS 2005 L P | US GEOTHERMAL INC | 6,285,000 | 7.8% | EDGAR |
| SC 13G/A | 2011-01-11 | BROWN ADVISORY HOLDINGS INC | US GEOTHERMAL INC | 0 | 0.0% | EDGAR |
| SC 13G | 2010-08-17 | Stephens Investment Management, LLC | US GEOTHERMAL INC | 4,174,194 | 5.3% | EDGAR |
| SC 13G/A | 2010-03-31 | BROWN INVESTMENT ADVISORY & TRUST CO | US GEOTHERMAL INC | 0 | 0.0% | EDGAR |
| SC 13G | 2010-03-24 | EXPLORATION CAPITAL PARTNERS 2005 L P | US GEOTHERMAL INC | 5,285,000 | 6.6% | EDGAR |
| SC 13G/A | 2010-02-16 | GOLDMAN SACHS GROUP INC | US GEOTHERMAL INC | 4,702,738 | 7.6% | EDGAR |
| SC 13G/A | 2010-02-16 | Invesco Ltd. | US GEOTHERMAL INC | 2,493,722 | 4.0% | EDGAR |
| SC 13G/A | 2010-02-12 | GOLDMAN SACHS GROUP INC | US GEOTHERMAL INC | 4,702,738 | 7.6% | EDGAR |
| SC 13G/A | 2009-02-17 | Winslow Management Company, LLC | US GEOTHERMAL INC | 4,553,739 | 7.3% | EDGAR |
| SC 13G | 2009-02-17 | Invesco Ltd. | US GEOTHERMAL INC | 5,521,026 | 8.9% | EDGAR |
| SC 13G | 2009-02-05 | GOLDMAN SACHS GROUP INC | US GEOTHERMAL INC | 4,610,874 | 7.4% | EDGAR |
| SC 13G | 2008-02-19 | Winslow Management Company, LLC | US GEOTHERMAL INC | 5,229,680 | 9.8% | EDGAR |