| | | | | | | | |
| Name | | Jurisdiction |
| Delaware Water Management Company, LLC | | Texas |
| | |
| Greyhound Midstream, LLC | | Texas |
| | |
| Greyhound Resources, LLC | | Texas |
| | |
| Longwood Gathering and Disposal Systems GP, Inc. | | Texas |
| | |
| Longwood Gathering and Disposal Systems, LP | | Texas |
| | |
| Longwood Midstream Delaware, LLC | | Texas |
| | |
| Longwood Midstream Holdings, LLC | | Texas |
| | |
| Longwood Midstream South Texas, LLC | | Texas |
| | |
| Longwood Midstream Southeast, LLC | | Texas |
| | |
| Matador Production Company | | Texas |
| | |
| MRC Delaware Resources, LLC | | Texas |
| | |
| MRC Energy Company | | Texas |
| | |
| MRC Energy South Texas Company, LLC | | Texas |
| | |
| MRC Energy Southeast Company, LLC | | Texas |
| | |
| MRC Hat Mesa, LLC | | Delaware |
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| MRC Permian Company | | Texas |
| | |
| MRC Permian LKE Company, LLC | | Texas |
| | |
| MRC Rockies Company | | Texas |
| | |
| Pronto Midstream, LLC | | Texas |
| | |
| Pronto Midstream Finance, LLC | | Texas |
| | |
| San Mateo Black River Oil Pipeline, LLC | | Texas |
| | |
| San Mateo Black River Oil Pipeline II, LLC | | Texas |
| | |
| San Mateo Black River Water Management Company, LLC | | Texas |
| | |
| San Mateo DLK Black River Midstream, LLC | | Texas |
| | |
| San Mateo Midstream, LLC | | Texas |
| | |
| San Mateo RB Pipeline, LLC | | Texas |
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| San Mateo Stateline Water Management Company, LLC | | Texas |
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| San Mateo Stebbins Water Management, LLC | | Texas |
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| San Mateo Wolf Pipeline, LLC | | Texas |
| | |
| San Mateo Wolf Water Resources, LLC | | Texas |
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| Southeast Water Management Company, LLC | | Texas |
| | |
| SR Permian, LLC | | Delaware |
| | |
| WR Permian, LLC | | Delaware |