Williams Partners Announces Filing of Its Annual Report on Form 10-K

Williams Partners L.P. (NYSE: WPZ) has filed its Annual Report on Form 10-K for the year ended Dec. 31, 2016, with the Securities and Exchange Commission.

A copy of the Annual Report on Form 10-K is available to be viewed or downloaded at www.williams.com within the Williams Partners Investor Center. Upon request to its Investor Relations department, Williams Partners will send a hard copy of its complete audited financial statements to investors, free of charge.

About Williams Partners

Williams Partners is an industry-leading, large-cap natural gas infrastructure master limited partnership with a strong growth outlook and major positions in key U.S. supply basins. Williams Partners has operations across the natural gas value chain from gathering, processing and interstate transportation of natural gas and natural gas liquids to petchem production of ethylene, propylene and other olefins. Williams Partners owns and operates more than 33,000 miles of pipelines system wide – including the nation’s largest volume and fastest growing pipeline – providing natural gas for clean-power generation, heating and industrial use. Williams Partners’ operations touch approximately 30 percent of U.S. natural gas. Tulsa, Okla.-based Williams (NYSE: WMB), a premier provider of large-scale U.S. natural gas infrastructure, owns approximately 74 percent of Williams Partners.

Portions of this document may constitute “forward-looking statements” as defined by federal law. Although the partnership believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Additional information about issues that could lead to material changes in performance is contained in the partnership’s annual and quarterly reports filed with the Securities and Exchange Commission.

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Williams Partners L.P.Media Contact:Keith Isbell, 918-573-7308orInvestor Contacts:John Porter, 918-573-0797orBrett Krieg, 918-573-4614