Press Release

THE WOODLANDS, Texas, Feb. 28, 2019 /PRNewswire/ -- Summit Midstream Partners, LP (NYSE: SMLP) announced today that it has filed its 2018 Annual Report on Form 10-K with the Securities and Exchange Commission. This report contains SMLP's audited financial statements for the fiscal year ended December 31, 2018.  A copy of the report is available for viewing and downloading from the Investors section on SMLP's website at www.summitmidstream.com. 

SMLP unitholders may request a hard copy of the report, free of charge, by submitting a written request to:

Summit Midstream Partners, LP
Attn: Investor Relations
1790 Hughes Landing Blvd, Suite 500
The Woodlands, TX 77380

SMLP also announced today that its 2018 tax packages, including the Schedule K-1, are now available online and may be accessed at https://partnerdatalink.com/Summit.  SMLP will begin mailing the 2018 tax packages to unitholders on March 1, 2019.

For additional information or assistance, unitholders may also contact Partner DataLink via email at SummitK1Help@deloitte.com or via phone at (855) 375-4158 Monday through Friday from 8:00 a.m. – 5:00 p.m. CST or visit SMLP's website at www.summitmidstream.com under "Investors >> K-1 Tax Information."

About Summit Midstream Partners, LP
SMLP is a growth-oriented 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 services pursuant to primarily long-term and fee-based gathering and processing agreements with customers and counterparties in six 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 Permian Basin, which includes the Bone Spring and Wolfcamp formations in New Mexico; (v) the Fort Worth Basin, which includes the Barnett Shale formation in Texas; and (vi) the Piceance Basin, which includes the Mesaverde formation as well as the Mancos and Niobrara shale formations in Colorado and Utah.  SMLP also owns a 40% ownership interest in Ohio Gathering, which is developing natural gas gathering and condensate stabilization infrastructure in the Utica Shale in Ohio. SMLP is headquartered in The Woodlands, Texas, with regional corporate offices in Denver, Colorado; Atlanta, Georgia; Pittsburgh, Pennsylvania; and Dallas, Texas.

Forward-Looking Statements
This press release includes certain statements concerning expectations for the future that are forward-looking within the meaning of the federal securities laws. Forward-looking statements contain known and unknown risks and uncertainties (many of which are difficult to predict and beyond management's control) that may cause SMLP's actual results in future periods to differ materially from anticipated or projected results. An extensive list of specific material risks and uncertainties affecting SMLP is contained in its 2018 Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 26, 2019, and as amended and updated from time to time. Any forward-looking statements in this press release are made as of the date of this press release and SMLP undertakes no obligation to update or revise any forward-looking statements to reflect new information or events.

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SOURCE Summit Midstream Partners, LP

Blake Motley, Vice President of Strategy and Head of Investor Relations, 832-930-7539, ir@summitmidstream.com