X0306 4 2017-08-30 0 0001591763 Enable Midstream Partners, LP ENBL 0001130310 CENTERPOINT ENERGY INC 1111 LOUISIANA HOUSTON TX 77002 0 0 1 0 0001042773 CENTERPOINT ENERGY RESOURCES CORP 1111 LOUISIANA HOUSTON TX 77002 0 0 1 0 Common Units Representing Limited Partner Interests 2017-08-30 4 C 0 139704916 A 233856623 I See Footnote Subordinated Units Representing Limited Partner Interests 0.00 2017-08-30 4 C 0 139704916 D Common Units 139704916 0 I See Footnote This Form 4 is being filed jointly by CenterPoint Energy, Inc. ("CenterPoint Energy") and CenterPoint Energy Resources Corp. ("CERC"). CenterPoint Energy indirectly owns all of the outstanding equity interests in CERC, which is the record holder of the common units and subordinated units of Enable Midstream Partners, LP (the "Issuer"). CenterPoint Energy may be deemed the beneficial owner of all common and subordinated units held by CERC. Represents the conversion of 139,704,916 subordinated units representing limited partner interests in the Issuer, which were converted into common units representing limited partner interests on a one-to-one basis upon expiration of the subordination period as set forth in the Issuer's Fourth Amended and Restated Agreement of Limited Partnership. CenterPoint Energy, Inc., /s/ Vincent A. Mercaldi, Assistant Corporate Secretary 2017-08-31 CenterPoint Energy Resources Corp., /s/ Vincent A. Mercaldi, Assistant Corporate Secretary 2017-08-31