Press Release

DALLAS, Sept. 3, 2014 /PRNewswire/ -- Summit Midstream Partners, LP (NYSE: SMLP) today announced the commencement of an underwritten public offering of 4,000,000 common units representing limited partner interests owned by Summit Midstream Partners Holdings, LLC ("SMP Holdings"), a wholly owned direct subsidiary of SMLP's sponsor, Summit Midstream Partners, LLC.  SMP Holdings has granted the underwriters a 30-day option to purchase up to 600,000 additional common units. 

SMLP will not receive any of the net proceeds from this offering and the number of SMLP's outstanding common units will remain unchanged.  The common units are being offered and will be sold pursuant to an effective shelf registration statement on Form S-3 previously filed with the Securities and Exchange Commission (the "SEC").

BofA Merrill Lynch, Barclays, Citigroup, Morgan Stanley, Baird, Credit Suisse, Deutsche Bank Securities, RBC Capital Markets, and Wells Fargo Securities are acting as joint book-running managers for the offering. 

When available, copies of the prospectus supplement and accompanying base prospectus relating to the offering may be obtained free of charge on the SEC's website at www.sec.gov or from the underwriters of the offering as follows:

This press release shall not constitute an offer to sell or a solicitation of an offer to buy the securities described above, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offering may be made only by means of a prospectus and related prospectus supplement.

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 North America.  SMLP currently provides natural gas gathering, treating and processing services pursuant to long-term, primarily fee-based natural gas gathering and processing agreements with our customers and counterparties in four unconventional resource basins: (i) the Appalachian Basin, which includes the Marcellus Shale formation in northern West Virginia; (ii) the Williston Basin, which includes the Bakken and Three Forks shale formations in northwestern North Dakota; (iii) the Fort Worth Basin, which includes the Barnett Shale formation in north-central Texas; and (iv) the Piceance Basin, which includes the Mesaverde formation as well as the Mancos and Niobrara shale formations in western Colorado and eastern Utah.  SMLP owns and operates more than 2,300 miles of pipeline and approximately 240,000 horsepower of compression.  SMLP is headquartered in Dallas, TX with regional corporate offices in Houston, TX, Denver, CO and Atlanta, GA.

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 2013 Annual Report on Form 10-K as updated and superseded by our Current Report on Form 8-K filed with the Securities and Exchange Commission on July 3, 2014 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

Marc Stratton, Vice President and Treasurer, 214-242-1966, ir@summitmidstream.com