| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2016-01-08 | BlackRock Inc. | GULFPORT ENERGY CORP | 13,247,554 | 12.2% | EDGAR |
| SC 13G/A | 2015-02-17 | FIR TREE INC. | GULFPORT ENERGY CORP | 2,888,080 | 3.4% | EDGAR |
| SC 13G/A | 2015-02-17 | CITADEL ADVISORS LLC | GULFPORT ENERGY CORP | - | 8.8% | EDGAR |
| SC 13G | 2015-02-17 | PUTNAM INVESTMENTS LLC | GULFPORT ENERGY CORP | 5,535,071 | 6.5% | EDGAR |
| SC 13G/A | 2015-02-13 | GULFPORT ENERGY CORP | Diamondback Energy, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2015-02-11 | VANGUARD GROUP INC | GULFPORT ENERGY CORP | 5,297,939 | 6.2% | EDGAR |
| SC 13G | 2015-02-04 | CREDIT SUISSE AG/ | GULFPORT ENERGY CORP | 4,292,589 | 5.0% | EDGAR |
| SC 13G | 2015-01-13 | INTEGRATED CORE STRATEGIES (US) LLC | GULFPORT ENERGY CORP | 1,474,312 | 1.7% | EDGAR |
| SC 13G/A | 2015-01-09 | BlackRock Inc. | GULFPORT ENERGY CORP | 10,833,268 | 12.7% | EDGAR |
| SC 13G/A | 2014-11-07 | BlackRock Inc. | GULFPORT ENERGY CORP | 13,509,299 | 15.8% | EDGAR |
| SC 13G/A | 2014-06-09 | BlackRock Inc. | GULFPORT ENERGY CORP | 8,876,748 | 10.4% | EDGAR |
| SC 13G/A | 2014-02-14 | CITADEL ADVISORS LLC | GULFPORT ENERGY CORP | - | 5.0% | EDGAR |
| SC 13G/A | 2014-02-14 | GULFPORT ENERGY CORP | Diamondback Energy, Inc. | 3,379,500 | 7.2% | EDGAR |
| SC 13G | 2014-02-13 | FIR TREE INC. | GULFPORT ENERGY CORP | 4,384,425 | 5.2% | EDGAR |
| SC 13G/A | 2014-02-11 | VANGUARD GROUP INC | GULFPORT ENERGY CORP | 4,983,855 | 5.9% | EDGAR |
| SC 13G/A | 2014-01-29 | BlackRock Inc. | GULFPORT ENERGY CORP | 7,466,978 | 8.9% | EDGAR |
| SC 13G | 2013-02-19 | CITADEL ADVISORS LLC | GULFPORT ENERGY CORP | - | 5.5% | EDGAR |
| SC 13G/A | 2013-02-14 | Neuberger Berman Group LLC | GULFPORT ENERGY CORP | 3,214,271 | 4.8% | EDGAR |
| SC 13G | 2013-02-13 | VANGUARD GROUP INC | GULFPORT ENERGY CORP | 3,645,432 | 5.4% | EDGAR |
| SC 13G | 2013-02-12 | GULFPORT ENERGY CORP | Diamondback Energy, Inc. | 7,914,036 | 21.4% | EDGAR |