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Summit Midstream Partners, LP Announces First Quarter 2015 Distribution

Summit Midstream Partners, LP (SMLP) announced today that the board of directors of its general partner, Summit Midstream GP, LLC, has declared a quarterly cash distribution of $0.565 per unit on all of its outstanding common and subordinated units, or $2.26 per unit on an annualized basis, for the quarter ended March 31, 2015. The distribution will be paid on May 15, 2015 to unitholders of record as of the close of business on May 8, 2015.

This quarterly distribution represents an increase of $0.065 per unit, or 13.0%, over the $0.50 per unit distribution paid for the quarter ended March 31, 2014 and an increase of $0.005 per unit, or 0.9%, over the $0.56 per unit distribution paid for the quarter ended December 31, 2014.

This release is intended to be a qualified notice under Treasury Regulation Section 1.1446-4(b). Brokers and nominees should treat one hundred percent (100.0%) of SMLP’s distributions to foreign investors as being attributable to income that is effectively connected with a United States trade or business. Accordingly, SMLP’s distributions to foreign investors are subject to federal income tax withholding at the highest applicable effective tax rate.

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.

About Summit Midstream Partners, LLC
Summit Midstream Partners, LLC (“Summit Investments”) indirectly owns a 49.5% limited partner interest in SMLP and indirectly owns and controls the general partner of SMLP, Summit Midstream GP, LLC, which has sole responsibility for conducting the business and managing the operations of SMLP. Summit Investments owns, operates and is developing various crude oil, natural gas, and water-related midstream energy infrastructure assets in the Bakken Shale in North Dakota, the DJ Niobrara Shale in Colorado, and the Utica Shale in Ohio. Summit Investments also owns a 40% interest in a joint venture that is developing natural gas gathering and condensate stabilization infrastructure in the Utica Shale in southeastern Ohio. Summit Investments is a privately held company controlled by Energy Capital Partners II, LLC, and certain of its affiliates.

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.