X0306 4 2015-01-30 0 0001483096 WILLIAMS PARTNERS L.P. WPZ 0000107263 WILLIAMS COMPANIES INC ONE WILLIAMS CENTER TULSA OK 74172 1 0 1 0 0001423889 WILLIAMS GAS PIPELINE CO LLC ONE WILLIAMS CENTER TULSA OK 74172 1 0 1 0 Convertible Class B Units 0.00 2015-01-30 4 A 0 795476 A Common Units 795476 13725843 D Convertible Class B Units ("Class B Units") representing limited partnership interests in Access Midstream Partners, L.P. (the "Partnership") are convertible on a one-for-one basis into Common Units representing limited partnership interests in the Partnership at the election of the holder or the Partnership, beginning on the business day after the record date for the distribution on Common Units for the fiscal quarter ending December 31, 2014, pursuant to the Partnership's First Amended and Restated Agreement of Limited Partnership, as amended. Reflects the number of Class B Units issued to Williams Gas Pipeline Company, LLC ("WGP") as a result of the Class B Unit Split (as defined below). Pursuant to an Agreement and Plan of Merger dated as of October 24, 2014 by and among the Partnership, Access Midstream Partners GP, L.L.C. (the "General Partner"), VHMS LLC, Williams Partners L.P. and Williams Partners GP LLC, the General Partner caused the Partnership to effect a subdivision of each Class B Unit of the Partnership into 1.06152 Class B Units (the "Class B Unit Split") and a subdivision of each common unit of the Partnership ("Common Unit") into 1.06152 Common Units (the "Common Unit Split"). The record date of the Class B Unit Split and the Common Unit Split was January 30, 2015. The distribution of Common Units and Class B Units pursuant to the Class B Split and Common Unit Split occurred prior to market open on February 2, 2015. Giving effect to the Class B Unit Split and Common Unit Split described above, The Williams Companies, Inc. ("Williams") indirectly beneficially owns (a) 94,411,648 Common Units held by WGP, a wholly owned subsidiary of Williams (b) the incentive distribution rights in the Partnership (c) the 2% general partner interest in the Partnership, and (d) 13,725,843 Class B Units held by WGP, which is all of the Class B Units outstanding. /s/ William H. Gault, Assistant Secretary 2015-02-03 William H. Gault, Assistant Secretary 2015-02-03