| SC 13G/A | 2019-02-13 | OZ MANAGEMENT LP | Ocean Rig UDW Inc. | 0 | 0.0% | EDGAR |
| SC 13D/A | 2018-12-07 | ELLIOTT ASSOCIATES, L.P. | Ocean Rig UDW Inc. | 0 | 0.0% | EDGAR |
| SC 13D/A | 2018-09-07 | Economou George | Ocean Rig UDW Inc. | 8,525,596 | 9.3% | EDGAR |
| SC 13D/A | 2018-09-05 | ELLIOTT ASSOCIATES, L.P. | Ocean Rig UDW Inc. | 5,918,258 | 6.5% | EDGAR |
| SC 13G | 2018-02-16 | OZ MANAGEMENT LP | Ocean Rig UDW Inc. | 4,708,910 | 5.2% | EDGAR |
| SC 13G | 2018-02-15 | PACIFIC INVESTMENT MANAGEMENT CO LLC | Ocean Rig UDW Inc. | 4,992,068 | 5.5% | EDGAR |
| SC 13G/A | 2018-02-14 | HIGHLAND CAPITAL MANAGEMENT FUND ADVISORS, L.P. | Ocean Rig UDW Inc. | 719 | 0.0% | EDGAR |
| SC 13G | 2018-02-14 | CANYON CAPITAL ADVISORS LLC | Ocean Rig UDW Inc. | 7,073,321 | 7.8% | EDGAR |
| SC 13D/A | 2017-10-17 | Avenue Capital Management II, L.P. | Ocean Rig UDW Inc. | 6,327,143 | 7.0% | EDGAR |
| SC 13D/A | 2017-10-16 | ELLIOTT ASSOCIATES, L.P. | Ocean Rig UDW Inc. | 5,918,258 | 6.5% | EDGAR |
| SC 13D/A | 2017-10-16 | BlueMountain Capital Management, LLC | Ocean Rig UDW Inc. | 9,846,060 | 10.9% | EDGAR |
| SC 13D | 2017-10-02 | ELLIOTT ASSOCIATES, L.P. | Ocean Rig UDW Inc. | 5,918,258 | 6.5% | EDGAR |
| SC 13D | 2017-10-02 | Avenue Capital Management II, L.P. | Ocean Rig UDW Inc. | 6,326,804 | 7.0% | EDGAR |
| SC 13D/A | 2017-09-29 | Economou George | Ocean Rig UDW Inc. | 8,525,596 | 9.4% | EDGAR |
| SC 13D | 2017-09-29 | BlueMountain Capital Management, LLC | Ocean Rig UDW Inc. | 9,846,060 | 10.9% | EDGAR |
| SC 13G/A | 2017-02-09 | ADAGE CAPITAL PARTNERS GP, L.L.C. | Ocean Rig UDW Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2016-05-04 | HIGHLAND CAPITAL MANAGEMENT FUND ADVISORS, L.P. | Ocean Rig UDW Inc. | 6,621,724 | 8.0% | EDGAR |
| SC 13D/A | 2016-04-14 | Economou George | Ocean Rig UDW Inc. | 7,421,860 | 9.0% | EDGAR |
| SC 13G/A | 2016-04-06 | DryShips Inc. | Ocean Rig UDW Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2016-02-11 | HIGHLAND CAPITAL MANAGEMENT FUND ADVISORS, L.P. | Ocean Rig UDW Inc. | 6,526,114 | 4.7% | EDGAR |