Exhibit 22.1
SUMMIT MIDSTREAM PARTNERS, LP
SUBSIDIARY ISSUERS AND GUARANTORS OF
REGISTERED SECURITIES
The below chart lists the subsidiary co-issuers and guarantors of the 5.75% senior notes due 2025 (the “Senior Notes”).
| Subsidiary | Registered Security | Guarantor Status | ||
| Summit Midstream Holdings, LLC | Senior Notes | Co-Issuer, Not a guarantor | ||
| Summit Midstream Finance Corp. | Senior Notes | Co-Issuer, Not a guarantor | ||
| Summit Midstream Partners, LP | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Grand River Gathering, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Red Rock Gathering Company, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit Midstream Niobrara, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| DFW Midstream Services LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Polar Midstream, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Epping Transmission Company, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit Midstream Marketing, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit Midstream Permian II, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit Midstream OpCo, LP | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Meadowlark Midstream Company, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit DJ-O, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit DJ-S, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Summit DJ-O Operating, LLC | Senior Notes | Joint and Several, Fully and Unconditionally | ||
| Grasslands Energy Marketing LLC | Senior Notes | Joint and Several, Fully and Unconditionally |