Summit Midstream Partners, LP Schedules First Quarter 2023 Earnings Call

HOUSTON, April 24, 2023

SMLP will host a conference call at 10:00 a.m. Eastern on May 5, 2023, to discuss its quarterly operating and financial results. The call can be accessed via teleconference at: Q1 2023 Summit Midstream Partners LP Earnings Conference Call (https://register.vevent.com/register/BI4b4d0f59743e432e92e0fc8b65387af6). Once registration is completed, participants will receive a dial-in number along with a personalized PIN to access the call. While not required, it is recommended that participants join 10 minutes prior to the event start. The conference call, live webcast and archive of the call can be accessed through the Investors section of SMLP's website at www.summitmidstream.com.

Upcoming Investor Conferences

Members of SMLP's senior management team will attend the 2023 Energy Infrastructure CEO & Investor Conference which will take place on May 22–24, 2023, the 2023 RBC Capital Markets Global Energy, Power & Infrastructure Conference taking place on June 6–7, 2023, and the BofA Securities 2023 Energy Credit Conference on June 7–8, 2023. The presentation materials associated with this event will be accessible through the Investors section of SMLP's website at www.summitmidstream.com prior to the beginning of the conference.

About Summit Midstream Partners, LP

SMLP is a value-driven limited partnership focused on developing, owning and operating midstream energy infrastructure assets that are strategically located in the core producing areas of unconventional resource basins, primarily shale formations, in the continental United States. SMLP provides natural gas, crude oil and produced water gathering, processing and transportation services pursuant to primarily long-term, fee-based agreements with customers and counterparties in five unconventional resource basins: (i) the Appalachian Basin, which includes the Utica and Marcellus shale formations in Ohio and West Virginia; (ii) the Williston Basin, which includes the Bakken and Three Forks shale formations in North Dakota; (iii) the Denver-Julesburg Basin, which includes the Niobrara and Codell shale formations in Colorado and Wyoming; (iv) the Fort Worth Basin, which includes the Barnett Shale formation in Texas; and (v) the Piceance Basin, which includes the Mesaverde formation as well as the Mancos and Niobrara shale formations in Colorado. SMLP has an equity method investment in Double E Pipeline, LLC, which provides interstate natural gas transportation service from multiple receipt points in the Delaware Basin to various delivery points in and around the Waha Hub in Texas. SMLP also has an equity method investment in Ohio Gathering, which operates extensive natural gas gathering and condensate stabilization infrastructure in the Utica Shale in Ohio. SMLP is headquartered in Houston, Texas.