| SC 13G | 2012-02-09 | VANGUARD GROUP INC | TESORO CORP /NEW/ | 9,313,570 | 6.7% | EDGAR |
| SC 13G/A | 2011-05-10 | BlackRock Inc. | TESORO CORP /NEW/ | 14,340,839 | 10.0% | EDGAR |
| SC 13G/A | 2011-04-11 | Tradewinds Global Investors, LLC | TESORO CORP /NEW/ | 1,848,421 | 1.3% | EDGAR |
| SC 13G/A | 2011-03-09 | Tradewinds Global Investors, LLC | TESORO CORP /NEW/ | 10,765,464 | 7.5% | EDGAR |
| SC 13G/A | 2011-02-14 | JANUS CAPITAL MANAGEMENT LLC | TESORO CORP /NEW/ | 25,400 | 0.0% | EDGAR |
| SC 13G/A | 2011-02-14 | Tradewinds Global Investors, LLC | TESORO CORP /NEW/ | 19,846,652 | 13.9% | EDGAR |
| SC 13G | 2011-02-11 | STATE STREET Corp | TESORO CORP /NEW/ | - | 5.5% | EDGAR |
| SC 13G | 2011-02-11 | DONALD SMITH & CO., INC. | TESORO CORP /NEW/ | 7,818,350 | 5.5% | EDGAR |
| SC 13G/A | 2011-02-09 | VANGUARD GROUP INC | TESORO CORP /NEW/ | 7,119,807 | 5.0% | EDGAR |
| SC 13G | 2011-02-09 | BlackRock Inc. | TESORO CORP /NEW/ | 8,113,092 | 5.7% | EDGAR |
| SC 13G | 2011-01-10 | FMR LLC | TESORO CORP /NEW/ | 21,221,320 | 14.8% | EDGAR |
| SC 13G/A | 2010-06-10 | Tradewinds Global Investors, LLC | TESORO CORP /NEW/ | 24,999,799 | 17.7% | EDGAR |
| SC 13G/A | 2010-06-10 | BlackRock Inc. | TESORO CORP /NEW/ | 6,244,064 | 4.4% | EDGAR |
| SC 13G/A | 2010-03-09 | BlackRock Inc. | TESORO CORP /NEW/ | 12,874,826 | 9.2% | EDGAR |
| SC 13G | 2010-02-16 | JANUS CAPITAL MANAGEMENT LLC | TESORO CORP /NEW/ | 7,677,012 | 5.5% | EDGAR |
| SC 13G | 2010-02-12 | STATE STREET Corp | TESORO CORP /NEW/ | - | 5.1% | EDGAR |
| SC 13G | 2010-02-12 | Tradewinds Global Investors, LLC | TESORO CORP /NEW/ | 12,295,001 | 8.8% | EDGAR |
| SC 13G | 2010-02-08 | VANGUARD GROUP INC | TESORO CORP /NEW/ | 7,995,849 | 5.7% | EDGAR |
| SC 13G/A | 2010-01-11 | FMR LLC | TESORO CORP /NEW/ | 4,508,077 | 3.2% | EDGAR |
| SC 13G/A | 2010-01-08 | BlackRock Inc. | TESORO CORP /NEW/ | 20,693,096 | 14.8% | EDGAR |