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10-K primary document
SMC · Annual Report (Form 10-K) · Filed March 16, 2026

Summit Midstream Corp10-K exhibit

smc-20251231xexx211listofs.htm
Document

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