X0306 4 2013-08-15 0 0001483096 ACCESS MIDSTREAM PARTNERS LP ACMP 0000107263 WILLIAMS COMPANIES INC ONE WILLIAMS CENTER TULSA OK 74172 1 0 1 0 Common units representing limited partner interests 2013-08-15 4 C 0 34538061 0.00 A 34538061 D Common units representing limited partner interests 2014-02-19 4 C 0 5599634 0.00 A 40137695 D Subordinated units representing limited partner interests 0.00 2013-08-15 4 C 0 34538061 D Common Units 34538061 0 D Subordinated C units representing limited partner interests 0.00 2014-02-19 4 C 0 5599634 D Common Units 5599634 0 D The 34,538,061 Subordinated Units converted into common units on a one-for-one basis for no additional consideration on August 15, 2013 upon the expiration of the Subordination Period, as defined in the First Amended and Restated Agreement of Limited Partnership of the Issuer, as amended (the "Partnership Agreement") and other circumstances noted in the Partnership Agreement. Following the conversion of the Subordinated Units, The Williams Companies, Inc. ("Williams") directly beneficially owned 34,538,061 common units. The 5,599,634 Subordinated C Units converted into common units on a one-for-one basis for no additional consideration on February 19, 2014, at Williams' option, on the terms set forth in the Partnership Agreement. Following the conversion of the Subordinated C Units, Williams directly owns 40,137,695 common units. /s/ Sarah C. Miller, Corporate Secretary 2014-02-21