| SC 13G/A | 2015-01-22 | BlackRock Inc. | PDC ENERGY, INC. | 3,146,081 | 8.8% | EDGAR |
| SC 13G | 2015-01-14 | INTEGRATED CORE STRATEGIES (US) LLC | PDC ENERGY, INC. | 892,645 | 2.5% | EDGAR |
| SC 13G | 2014-12-17 | INTEGRATED CORE STRATEGIES (US) LLC | PDC ENERGY, INC. | 769,304 | 2.1% | EDGAR |
| SC 13D/A | 2014-04-09 | PDC ENERGY, INC. | PDC 2002 B LTD PARTNERSHIP | 4,844 | 8.7% | EDGAR |
| SC 13D | 2014-04-09 | PDC ENERGY, INC. | PDC 2002 C LTD PARTNERSHIP | 3,912 | 8.3% | EDGAR |
| SC 13G/A | 2014-04-08 | BlackRock Inc. | PDC ENERGY, INC. | 3,708,215 | 10.4% | EDGAR |
| SC 13G/A | 2014-04-02 | SAC Capital Advisors LP | PDC ENERGY, INC. | 15,965 | 0.0% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | PDC ENERGY, INC. | 3,580,249 | 10.0% | EDGAR |
| SC 13G/A | 2014-02-14 | PointState Capital LP | PDC ENERGY, INC. | 411,834 | 1.2% | EDGAR |
| SC 13G/A | 2014-02-14 | CITADEL ADVISORS LLC | PDC ENERGY, INC. | - | 6.4% | EDGAR |
| SC 13G/A | 2014-02-12 | VANGUARD GROUP INC | PDC ENERGY, INC. | 2,325,385 | 6.5% | EDGAR |
| SC 13G/A | 2014-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | PDC ENERGY, INC. | 1,984,103 | 5.5% | EDGAR |
| SC 13G/A | 2014-02-10 | DIMENSIONAL FUND ADVISORS LP | PDC ENERGY, INC. | 2,089,260 | 5.9% | EDGAR |
| SC 13G/A | 2014-01-31 | BlackRock Inc. | PDC ENERGY, INC. | 3,488,504 | 9.8% | EDGAR |
| SC 13G | 2014-01-13 | SAC Capital Advisors LP | PDC ENERGY, INC. | 1,381,776 | 3.9% | EDGAR |
| SC 13G | 2013-12-10 | FMR LLC | PDC ENERGY, INC. | 3,817,427 | 10.7% | EDGAR |
| SC 13G/A | 2013-08-09 | BlackRock Inc. | PDC ENERGY, INC. | 3,083,969 | 10.2% | EDGAR |
| SC 13G | 2013-05-06 | PointState Capital LP | PDC ENERGY, INC. | 1,571,500 | 5.2% | EDGAR |
| SC 13G | 2013-04-08 | CITADEL ADVISORS LLC | PDC ENERGY, INC. | - | 5.8% | EDGAR |
| SC 13G | 2013-04-03 | CITADEL ADVISORS LLC | PDC ENERGY, INC. | - | 4.8% | EDGAR |