Press Release

THE WOODLANDS, Texas, May 7, 2015 /PRNewswire/ -- Summit Midstream Partners, LP (NYSE: SMLP) today announced the pricing of its underwritten public offering of 6,500,000 common units representing limited partner interests in SMLP at a public offering price of $30.75 per common unit.  The underwriters have been granted a 30-day option to purchase up to an additional 975,000 common units, less the underwriting discount.  The offering is scheduled to close on May 13, 2015, subject to customary closing conditions.

SMLP intends to use the net proceeds from this offering to fund a portion of the purchase price of its pending acquisition of all of the issued and outstanding membership interests in Polar Midstream, LLC and Epping Transmission Company, LLC (the "Acquisition"). If the Acquisition is not consummated for any reason, SMLP intends to use the net proceeds from the offering for general partnership purposes, including the repayment of borrowings under its revolving credit facility.  

Barclays, BofA Merrill Lynch, Goldman, Sachs & Co., Morgan Stanley, Wells Fargo Securities, Baird, Citigroup, Deutsche Bank Securities and RBC Capital Markets are acting as joint book-running managers for the offering.  BB&T Capital Markets and U.S. Capital Advisors are acting as co-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 Securities and Exchange Commission's website at www.sec.gov or from the underwriters of the offering as follows:

The common units are being offered and sold pursuant to an effective shelf registration statement that was previously filed with the Securities and Exchange Commission.  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 meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

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 primarily long-term and fee-based natural gas gathering and processing agreements with 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 over 250,000 horsepower of compression. SMLP is headquartered in The Woodlands, Texas with regional corporate offices in Denver, Colorado and Atlanta, Georgia.

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 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 2, 2015 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, Senior Vice President and Treasurer, 832-608-6166, ir@summitmidstream.com