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

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