X0306 4 2015-06-30 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 2015-06-30 4 J 0 25341 A 94151707 I See Footnotes Right to Acquire Common Units 2015-06-30 4 J 0 25341 D Common Units 25341 0 I See Footnotes 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. As of July 2, 2015, CenterPoint Energy, through CERC, holds 94,151,707 common units, representing a 22.3% limited partner interest in the Issuer and 139,704,916 subordinated units, representing a 33.1% interest in the Issuer, for a combined 55.4% limited partner interest in the Issuer. On June 12, 2015, pursuant to the master formation agreement under which the Issuer was formed, CenterPoint Energy exercised a put right with respect to a 0.1% interest in Southeast Supply Header, LLC ("SESH") in exchange for 25,341 common units. The transaction closed on June 30, 2015. Pursuant to the master formation agreement and subject to certain restrictions, if the fair market value of the contributed SESH interest was more or less than the value contemplated in the master formation agreement, a cash payment may have been required by either the Issuer or CenterPoint Energy in order to ensure that the value of the total consideration paid by the Issuer equaled the fair market value of the contributed SESH interest. No cash payment was required in connection with CenterPoint Energy's exercise of its put right with respect to the 0.1% interest in SESH. CenterPoint Energy, Inc., Vincent A. Mercaldi, Assistant Corporate Secretary 2015-07-02 CenterPoint Energy Resources Corp., Vincent A. Mercaldi, Assistant Corporate Secretary 2015-07-02