X0306 4 2018-08-10 1 0001483096 WILLIAMS PARTNERS L.P. WPZ 0001721668 Poarch John E ONE WILLIAMS CENTER TULSA OK 74172 0 1 0 0 SVP - Engineering Services Common Units 2018-08-10 4 D 0 11438 D 0 D On August 10, 2018, pursuant to an Agreement and Plan of Merger dated May 16, 2018 by and among The Williams Companies, Inc. ("Williams"), SCMS LLC, Williams Partners L.P. ("Williams Partners"), and WPZ GP LLC, each of the outstanding common units representing limited partner interests in Williams Partners (the "WPZ Common Units") held by the Reporting Person converted into 1.494 shares of Williams common stock (the "Merger Exchange"). As a result of the Merger Exchange, the Reporting Person disposed of the WPZ Common Units reported on Table I herein on August 10, 2108. Shortly following the Merger Exchange, Williams Partners merged into Williams, and the separate existence of Williams Partners ceased. Giving effect to the Merger Exchange, the Reporting Person no longer owns, directly or indirectly, any WPZ Common Units. Cher S. Lawrence, Attorney-in-Fact 2018-08-13