EX-21.1 4 smc-20251231xexx211listofs.htm EX-21.1

|  | EXHIBIT 21.1
SUMMIT MIDSTREAM CORPORATION
LIST OF SUBSIDIARIES
As of December 31, 2025
Name |  | State or other jurisdiction of incorporation or organization
BCZ Land Holdings, LLC |  | Delaware
Centennial Water Pipelines, LLC |  | Delaware
DFW Midstream Services, LLC |  | Delaware
Double E Pipelines, LLC |  | Delaware
Epping Transmission Company, LLC |  | Delaware
Grand River Gathering, LLC |  | Delaware
Grasslands Energy Marketing, LLC |  | Delaware
Meadowlark Midstream Company, LLC |  | Delaware
Moonrise Midstream, LLC |  | Delaware
Mountaineer Midstream Company, LLC |  | Delaware
Polar Midstream, LLC |  | Delaware
Red Rock Gathering Company, LLC |  | Delaware
SMC Bakken, LLC |  | Delaware
SMC Clariter, LLC |  | Delaware
Summit Bakken Holdings, LLC |  | Delaware
Summit Bakken Member, LLC |  | Delaware
Summit Bakken OpCo, LLC |  | Delaware
Summit Climate Solutions, LLC |  | Delaware
Summit Climate Holdings, LLC |  | Delaware
Summit Climate Member, LLC |  | Delaware
Summit Climate OpCo, LLC |  | Delaware
Summit Contribution Holdings, LLC |  | Delaware
Summit DJ-O, LLC |  | Delaware
Summit DJ-O Operating, LLC |  | Delaware
Summit DJ-S, LLC |  | Delaware
Summit Management Holdings, LLC |  | Delaware
Summit Midstream Finance Corp. |  | Delaware
Summit Midstream GP, LLC |  | Delaware
Summit Midstream Holdings, LLC |  | Delaware
Summit Midstream Marketing, LLC |  | Delaware
Summit Midstream Niobrara, LLC |  | Delaware
Summit Midstream OpCo, LP |  | Delaware
Summit Midstream Partners Holdings, LLC |  | Delaware
Summit Midstream Partners, LP |  | Delaware
Summit Midstream Partners, LLC |  | Delaware
Summit Midstream Permian II, LLC |  | Delaware
Summit Operating Services Company, LLC |  | Delaware
Summit Permian Transmission Holdco, LLC |  | Delaware
Summit Permian Transmission, LLC |  | Delaware
Tall Oak Midstream Operating, LLC |  | Delaware
Tall Oak Woodford, LLC |  | Delaware
VM Arkoma Stack, LLC |  | Delaware

1