| 3 | Initial statement of beneficial ownershi... | Contrarian Capital Management, L.l.c. | Broadridge Financial Solutions, Inc. /fa | 01/22/2019 | |
| 3 | Initial statement of beneficial ownershi... | Chaparral Energy, Inc. | Broadridge Financial Solutions, Inc. /fa | 01/22/2019 | |
| 4 | Statement of changes in beneficial owner... | Contrarian Capital Management, L.l.c. | | 05/15/2018 | |
| 4 | Statement of changes in beneficial owner... | Grizzly Energy, Llc | Contrarian Capital Management, L.l.c. /fa | 05/15/2018 | |
| 4 | Statement of changes in beneficial owner... | Contrarian Capital Management, L.l.c. | | 03/05/2018 | |
| 4 | Statement of changes in beneficial owner... | Grizzly Energy, Llc | Contrarian Capital Management, L.l.c. /fa | 03/05/2018 | |
| 3 | Initial statement of beneficial ownershi... | Contrarian Capital Management, L.l.c. | Seward & Kissel Llp /fa | 08/21/2017 | |
| 3 | Initial statement of beneficial ownershi... | Grizzly Energy, Llc | Seward & Kissel Llp /fa | 08/21/2017 | |
| 3 | Initial statement of beneficial ownershi... | Key Energy Services Inc | Cleary Gottlieb Steen & Hamilton Llp /fa | 12/27/2016 | |
| 3 | Initial statement of beneficial ownershi... | Contrarian Capital Management, L.l.c. | Cleary Gottlieb Steen & Hamilton Llp /fa | 12/27/2016 | |
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