Document:

EX-10.3

 Exhibit 10.3 
 EXECUTION VERSION 
 REGISTRATION RIGHTS AGREEMENT 

This REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made and entered into as of May 1, 2013, by and among
CenterPoint Energy Field Services LP, a Delaware limited partnership (the “Partnership”), CenterPoint Energy Resources Corp., a Delaware corporation (“CERC”), OGE Enogex Holdings LLC, a Delaware limited liability
company (“OGEH”), and Enogex Holdings LLC, a Delaware limited liability company (“Bronco”). CERC, OGEH and Bronco are referred to collectively herein as the “Initial Holders.” The Partnership and
the Initial Holders are referred to collectively herein as the “Parties.” 
 WHEREAS, the Initial Holders have
acquired, and may (together with their respective Affiliates) acquire in the future, certain Registrable Securities; and 

WHEREAS, as an inducement to the willingness of the Initial Holders to hold certain Registrable Securities, the Parties desire to provide
certain registration rights to the Initial Holders with respect to any Registrable Securities held by them or their Affiliates upon the terms and subject to the conditions set forth herein. 

NOW, THEREFORE, IN CONSIDERATION of the mutual covenants and agreements contained in this Agreement, and for other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the Parties hereby agree as follows: 
 1.
Definitions. 
 (a) As used in this Agreement, the following terms shall have the respective meanings set forth in
this Section 1: 
 “Adverse Disclosure” means public disclosure of material non-public information relating
to a significant transaction, which disclosure (i) would be required to be made in any Registration Statement filed with the Commission by the Partnership so that such Registration Statement would not contain any untrue statement of a material
fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading; (ii) would not be required to be made at such time but for the filing of such Registration Statement; and
(iii) would, in the good faith judgment of the Partnership’s Board of Directors, have a material adverse effect upon the Partnership’s ability to complete such significant transaction or upon the terms on which such significant
transaction could be completed. 
 “Affiliate” has the meaning set forth in the Partnership Agreement.

 “Agreement” has the meaning set forth in the preamble. 

“Automatic Shelf Registration Statement” means an “automatic shelf registration statement” as defined under
Rule 405. 
 “Board of Directors” has the meaning set forth in the Partnership Agreement. 

“Bronco” has the meaning set forth in the preamble. 

 “Business Day” has the meaning set forth in the Partnership Agreement.

 “CERC” has the meaning set forth in the preamble. 

“CERC Contribution Agreement” has the meaning set forth in the Master Formation Agreement. 

“CNP” means CenterPoint Energy, Inc., a Texas corporation. 

“CNP Services Agreement” has the meaning set forth in the Master Formation Agreement. 

“CNP Transitional Seconding Agreement” has the meaning set forth in the Master Formation Agreement. 

“Commission” means the Securities and Exchange Commission. 

“Common Units” has the meaning set forth in the Partnership Agreement. 

“Conflicts Committee” has the meaning set forth in the Partnership Agreement. 

“Delaying Event” means a significant negative development in the capital markets conditions that causes the Board of
Directors, in good faith, to conclude that the consummation of an Initial Public Offering would have a material adverse effect on the Partnership. 
 “Demand Notice” has the meaning set forth in Section 2(b)(ii). 
 “Demand Registration” has the meaning set forth in Section 2(b)(ii). 
 “Effective Date” means the time and date that a Registration Statement is first declared effective by the Commission or otherwise becomes effective. 

“Effectiveness Period” has the meaning set forth in Section 2(b)(iii). 

“EH II LLC Agreement” has the meaning set forth in the Master Formation Agreement. 

“EH Contribution Agreement” has the meaning set forth in the Master Formation Agreement. 

“Employee Transition Agreement” has the meaning set forth in the Master Formation Agreement. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 

“Filing Date” means the date that an IPO Registration Statement is filed with the Commission (or, if applicable,
submitted to the Commission confidentially). 
 “General Partner” has the meaning set forth in the Partnership
Agreement. 

  
 2 

 “General Partner Interest” has the meaning set forth in the Partnership
Agreement. 
 “GP LLC Agreement” has the meaning set forth in the Master Formation Agreement. 

“Group Member” has the meaning set forth in the Partnership Agreement. 

“Holder” means (i) any Initial Holder who holds Registrable Securities; or (ii) any holder of Registrable
Securities to whom the registration rights conferred by this Agreement have been transferred in compliance with Section 9(g) hereof. 
 “Incentive Distribution Right” has the meaning set forth in the Partnership Agreement. 
 “Indemnified Persons” has the meaning set forth in Section 6(a). 
 “Initial Bronco Amount” has the meaning set forth in the Partnership Agreement. 
 “Initial Holders” has the meaning set forth in the preamble. 

“Initial Public Offering” means the registration by the Partnership of any Partnership Interests, including Common
Units, pursuant to a Registration Statement that is filed and declared effective under the Securities Act. 

“Initiating Holder” has the meaning set forth in Section 2(b)(ii). 

“IPO Date” means the pricing of the first sale of Common Units in the Initial Public Offering. 

“IPO Filing Deadline” means the first anniversary of the date of this Agreement. 

“IPO Registration” has the meaning set forth in Section 2(a)(i). 

“IPO Registration Statement” has the meaning set forth in Section 2(a)(i). 

“Lock-Up Period” has the meaning set forth in Section 3(o). 

“Losses” has the meaning set forth in Section 6(a). 

“Master Formation Agreement” means that certain Master Formation Agreement dated as of March 14, 2013 among CNP,
OGE, Bronco Midstream Holdings, LLC, a Delaware limited liability company, and Bronco Midstream Holdings II, LLC, a Delaware limited liability company, and to which the General Partner, the Partnership and Bronco are bound, as it may be further
amended, supplemented or restated from time to time. 
 “OGE” means OGE Energy Corp., an Oklahoma corporation.

 “OGE Services Agreement” has the meaning set forth in the Master Formation Agreement. 

  
 3 

 “OGE Transitional Seconding Agreement” has the meaning set forth in the
Master Formation Agreement. 
 “OGEH” has the meaning set forth in the preamble. 

“Omnibus Agreement” has the meaning set forth in the Master Formation Agreement. 

“Parties” has the meaning set forth in the preamble. 

“Partnership” has the meaning set forth in the preamble. 

“Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership of the Partnership, dated
as of the date hereof, as it may be further amended, supplemented or restated from time to time. 
 “Partnership
Group” has the meaning set forth in the Partnership Agreement. 
 “Partnership Interest” has the
meaning set forth in the Partnership Agreement. 
 “Person” has the meaning set forth in the Partnership
Agreement. 
 “Piggyback Notice” has the meaning set forth in Section 2(c)(i). 

“Piggyback Registration” has the meaning set forth in Section 2(c)(i). 

“Piggyback Request” has the meaning set forth in Section 2(c)(i). 

“Proceeding” means any action, claim, suit, proceeding or investigation (including a preliminary investigation or
partial proceeding, such as a deposition) pending or known to the Partnership to be threatened. 
 “Prospectus”
means the prospectus included in a Registration Statement (including a prospectus that includes any information previously omitted from a prospectus filed as part of an effective Registration Statement in reliance upon Rule 430A, Rule 430B
or Rule 430C promulgated under the Securities Act), as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities covered by a Registration Statement, and all
other amendments and supplements to the Prospectus, including post-effective amendments, and all information incorporated by reference or deemed to be incorporated by reference in such Prospectus. 

“Registrable Securities” means any Partnership Interest other than the General Partner Interest and the Incentive
Distribution Rights; provided, however, that “Registrable Securities” shall not include any such securities (i) that have been sold or disposed of in accordance with an effective Registration Statement covering such
Registrable Securities; (ii) are held by any Group Member; (iii) that have been sold or disposed of in accordance with Rule 144; or (iv) that have been sold or disposed of in a private transaction in which the registration rights
conferred by this Agreement have not been transferred in compliance with Section 9(g) hereof. 

  
 4 

 “Registration Expenses” has the meaning set forth in Section 5.

 “Registration Statement” means a registration statement in the form required to register the sale or resale
of the Registrable Securities under the Securities Act, and including any Prospectus, amendments and supplements to each such registration statement or Prospectus, including pre- and post-effective amendments, all exhibits thereto, and all
information incorporated by reference or deemed to be incorporated by reference in such registration statement (other than a registration statement relating solely to an employee benefit plan, an offering relating to a transaction on Form S-4 or an
offering on any registration statement form that does not permit secondary sales). 
 “Rule 144”, “Rule
158”, “Rule 405”, “Rule 415”, “Rule 424”, “Rule 430A”, “Rule 430B” and “Rule 430C” mean, in each case, such rule promulgated by the
Commission pursuant to the Securities Act, as such rule may be amended from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same effect as such rule. 

“Securities Act” means the Securities Act of 1933, as amended. 

“Selling Expenses” means all underwriting discounts, selling commissions and stock transfer taxes applicable to the sale
of Registrable Securities and, except as provided herein, fees and disbursements of counsel or any other advisor for any Holder. 
 “Selling Holder” means a Holder who is selling Registrable Securities pursuant to the procedures set forth herein. 

“Shelf Registration Statement” means a “shelf” Registration Statement providing for the registration of, and
the sale on a continuous or delayed basis by the Holders, of the Registrable Securities pursuant to Rule 415. 

“Sponsor Party” has the meaning set forth in the Partnership Agreement. 

“Sponsor Party Demand Notice” has the meaning set forth in Section 2(b)(i). 

“Sponsor Party Demand Registration” has the meaning set forth in Section 2(b)(i). 

“Sponsor Party Holder” means each of CERC and OGEH and any holder of Registrable Securities to whom the
registration rights conferred by this Agreement have been transferred by CERC or OGEH in compliance with Section 9(g) hereof. 
 “Sponsor Party Initiating Holder” has the meaning set forth in Section 2(b)(i). 
 “Suspension” has the meaning set forth in Section 2(d)(iv). 

“Trading Market” means the principal national securities exchange on which the Common Units are or will be listed or
admitted to trading, as determined by the Board of Directors. 

  
 5 

 “Transaction Documents” means, collectively, the Master Formation
Agreement, the CERC Contribution Agreement, the CNP Services Agreement, the CNP Transitional Seconding Agreement, the Employee Transition Agreement, the EH II LLC Agreement, the GP LLC Agreement, the OGE Services Agreement, the OGE Transitional
Seconding Agreement, the Omnibus Agreement, the Partnership Agreement, the Letter Agreement re: Initial Budget and the EH Contribution Agreement. 
 “WKSI” means a “well known seasoned issuer” as defined under Rule 405. 
 (b) The following rules of construction will govern the interpretation of this Agreement: (i) “days,” “months,” and “years” will mean calendar days, months and years
unless otherwise indicated; (ii) “include,” “includes” and “including” shall be deemed to be followed by the words “without limitation”; (iii) article and section titles do not affect interpretation;
(iv) “hereof,” “herein,” and “hereunder” and words of similar meaning refer to this Agreement as a whole and not to any particular provision of this Agreement; (v) “$” means United States dollars;
and (vi) the schedules and annexes attached to this Agreement are hereby incorporated by reference into this Agreement and form part hereof. 
 (c) The Parties have participated jointly in the negotiation and drafting of this Agreement. No provision of this Agreement will be interpreted in favor of, or against, any of the Parties by reason of the
extent to which any such Party or its counsel participated in the drafting thereof or by reason of the extent to which any such provision is inconsistent with any prior draft of this Agreement, and no rule of strict construction will be applied
against any Party. This Agreement will not be interpreted or construed to require any Person to take any action, or fail to take any action, if to do so would violate any applicable law. 

2. Registration. 
 (a) Registration. 
 (i) As soon as practicable following the date of this
Agreement, but in any event prior to the IPO Filing Deadline, the Partnership shall prepare and file with the Commission a Registration Statement (an “IPO Registration Statement”) on Form S-1 (or any appropriate registration form
under the Securities Act selected by the Partnership) for an Initial Public Offering (“IPO Registration”). 

(ii) Subject to Section 2(c)(ii), (A) the Holders shall be permitted to include for registration in the IPO Registration
Statement, on the same terms and conditions as the primary Common Units proposed to be offered and sold for the account of the Partnership, the number of Registrable Securities as they may request and (B) if the Initial Public Offering
contemplates an “over-allotment option,” Bronco shall be permitted to include in such over-allotment option a number of Registrable Securities held by Bronco up to 100% of the securities subject to such over-allotment option. Bronco’s
rights for inclusions of its Registrable Securities in the Initial Public Offering shall have priority over the inclusion of securities of any Sponsor Party. 

  
 6 

 (iii) The Partnership shall use reasonable best efforts to cause the IPO Registration
Statement to become effective under the Securities Act and to consummate the Initial Public Offering (including registering the Common Units under the Exchange Act and causing the Common Units to be listed on the Trading Market) as promptly as
reasonably practicable, but (except in the case of a Delaying Event as set forth in Section 2(a)(iv)) not later than 180 days following the Filing Date. 
 (iv) Notwithstanding any other provision of this Section 2(a), the Partnership shall not be required to consummate an Initial Public Offering pursuant to this Section 2(a) for so long as a
Delaying Event has occurred and is determined to be continuing, provided that the Delaying Event shall not delay the consummation of the Initial Public Offering for more than 90 days past the IPO Filing Deadline, without the prior written consent of
Bronco (which shall not be unreasonably withheld). To exercise an extension due to a Delaying Event, the General Partner shall provide to Bronco a certificate executed by a senior executive officer of the General Partner stating that the Board of
Directors has determined in good faith that a Delaying Event has occurred. Once the Delaying Event no longer exists, the Partnership shall use reasonable best efforts to promptly cause the IPO Registration Statement to become effective. During the
extended period caused by the Delaying Event, the Partnership shall use reasonable best efforts to continue to update the IPO Registration Statement and work with the Commission so that the IPO Registration Statement can be declared effective
promptly upon the expiration of the extended period. 
 (b) Demand Registration Rights. 

(i) Demand Registrations of Sponsor Party Holders. At any time following the date that is 180 days after the IPO Date, any Sponsor
Party Holder that holds Registrable Securities (the “Sponsor Party Initiating Holder”) shall have the option and right, exercisable by delivering a written notice to the Partnership (a “Sponsor Party Demand
Notice”), to require the Partnership to, pursuant to the terms of and subject to the limitations contained in this Agreement, prepare and file with the Commission a Registration Statement registering the offering and sale of all or any
portion of such Sponsor Party Holder’s Registrable Securities, which may, at the option of the Initiating Holder, be a Shelf Registration Statement (the “Sponsor Party Demand Registration”). 

(ii) Demand Registrations of Bronco. At any time following the date that the Partnership is first eligible to file a registration
statement under Form S-3 (or any equivalent or successor form under the Securities Act), Bronco, for as long as it holds Registrable Securities (together with any Sponsor Party Initiating Holder, an “Initiating Holder”), shall have
the option and right, exercisable by delivering a written notice to the Partnership (together with a Sponsor Party Demand Notice, a “Demand Notice”), to require the Partnership to, pursuant to the terms of and subject to the
limitations contained in this Agreement, prepare and file with the Commission a Registration Statement registering the offering and sale of all or any portion of Bronco’s Registrable Securities, which may, at the option of Bronco, be a Shelf
Registration Statement (an “Bronco Demand Registration” and, together with a Sponsor Party Demand Registration, a “Demand Registration”). 
 (iii) Within ten Business Days of the receipt of the Demand Notice, the Partnership shall give written notice of such Demand Notice to all other Holders that hold the same class of securities as the
Registrable Securities and shall, subject to the limitations of this 

  
 7 

 
Section 2(b), use reasonable best efforts to file a Registration Statement covering all of the Registrable Securities that such Holders shall in writing request (such request to be given to
the Partnership within ten Business Days of written receipt of such notice of the Demand Notice given by the Partnership pursuant to this Section 2(b)(iii)) to be included in such Demand Registration as promptly as reasonably practicable as
directed by the Initiating Holder in accordance with the terms and conditions of the Demand Notice and use reasonable best efforts to cause such Registration Statement to become effective under the Securities Act and remain effective under the
Securities Act for not less than six months following the Effective Date or such longer period ending when all Registrable Securities covered by such Registration Statement have been sold (the “Effectiveness Period”). 

(iv) Subject to the other limitations contained in this Agreement, the Partnership shall not be obligated hereunder to effect more than
(A) one Demand Registration pursuant to Section 2(b)(ii) in any 12-month period, (B) three Demand Registrations on Form S-3 (or any equivalent or successor form under the Securities Act) pursuant to Section 2(b)(i) or
(C) two Demand Registrations on Form S-3 (or any equivalent or successor form under the Securities Act) pursuant to Section 2(b)(ii). 
 (v) Notwithstanding any other provision of this Section 2(b), the Partnership shall not be required to effect a registration or file a Registration Statement pursuant to this Section 2(b):
(A) during the period starting with notice to the Holder of the intent to file a Registration Statement under Sections 2(b)(iii) or 2(c)(i) (which shall occur no earlier than 60 days prior to a good faith estimate, with the approval of the
Board of Directors, of the date of filing of such Registration Statement) and ending on a date 90 days after the effective date of, a Partnership-initiated registration; provided that the Partnership uses reasonable best efforts to cause such
registration statement to become effective; (B) for a period of up to 90 days after the date of a Demand Notice for registration pursuant to this Section 2(b) if at the time of such request the Partnership is currently engaged in a
self-tender or exchange offer and the filing of a Registration Statement would cause a violation of the Exchange Act; or (C) for a period of up to 90 days, if the Conflicts Committee, proceeding in good faith, determines that the filing of a
Registration Statement would require an Adverse Disclosure; provided, that, in such event, the Holders requesting such Demand Registration may withdraw such request and, if withdrawn, such request will not count as one of the permitted Demand
Registrations hereunder and the Partnership will pay all expenses (including reasonable attorneys fees) in connection with such registrations; provided, further, that the Partnership may delay a Demand Registration hereunder only once in any 12
month period. 
 (vi) Notwithstanding any other provision of this Section 2(b), if (A) the Holders intend to distribute
the Registrable Securities covered by a Demand Registration by means of an underwritten public offering and (B) the managing underwriter or managing underwriters of such offering advise the Partnership in writing that, in their opinion, the
inclusion of all of such Holders’ Registrable Securities in the subject Registration Statement would have a material adverse effect on the marketability of the offering, then the Partnership shall so advise all Holders of such Registrable
Securities that would otherwise be underwritten pursuant hereto, and the number of Registrable Securities that may be included in the underwriting shall be reduced to equal the number of Registrable Securities that such managing underwriter or
managing underwriters advise the Partnership can be sold without having such material adverse 

  
 8 

 
effect. The aggregate number of Registrable Securities to be included in such Demand Registration as a result of the reduction described in the immediately preceding sentence shall be (A) in
the case of a Sponsor Party Demand Registration, reduced pro rata among the Holders seeking to include their Registrable Securities in the underwriting, based, for each such Holder, on the percentage derived by dividing (x) the number of
Registrable Securities owned by such Holder by (y) the total number of Registrable Securities owned by all the Holders seeking to include their Registrable Securities in the underwriting, or (B) in the case of a Bronco Demand Registration,
allocated first to Bronco based on the number of Registrable Securities proposed to be sold by Bronco. If there remains availability for additional Registrable Securities to be included in such Bronco Demand Registration, the aggregate number of
Registrable Securities to be included in such Bronco Demand Registration shall be allocated among the Holders other than Bronco seeking to include their Registrable Securities in the underwriting on a pro rata basis based on the percentage derived
by dividing (x) the number of Registrable Securities owned by such Holder by (y) the total number of Registrable Securities owned by such other Holders (excluding Bronco) seeking to include their Registrable Securities in the underwriting.
Any Registrable Securities excluded or withdrawn from such underwriting shall be withdrawn from the registration. 
 (vii) The
Partnership may include in any such Demand Registration other Partnership securities for sale for its own account or for other Holders as provided herein; provided that if the managing underwriter for the offering determines that the number
of securities proposed to be offered in such offering would have a material adverse effect on the marketability of such offering, then the Registrable Securities to be sold by the Holders shall be included in such registration before any Partnership
securities proposed to be sold for the account of the Partnership or any other Person. 
 (viii) Subject to the limitations
contained in this Agreement, the Partnership shall effect any Demand Registration on Form S-3 (except if the Partnership is not then eligible to register for resale the Registrable Securities on Form S-3, in which case such Demand Registration shall
be effected on another appropriate form for such purpose pursuant to the Securities Act) and if the Partnership becomes, and is at the time of its receipt of a Demand Notice, a WKSI, the Demand Registration for any offering and selling of
Registrable Securities through a firm commitment underwriting shall be effected pursuant to an Automatic Shelf Registration Statement, which shall be on Form S-3 or any equivalent or successor form under the Securities Act (if available to the
Partnership). 
 (ix) Without limiting Section 3, in connection with any Demand Registration pursuant to and in accordance
with this Section 2(b), the Partnership shall (A) promptly prepare and file or cause to be prepared and filed: (1) such additional forms, amendments, supplements, prospectuses, certificates, letters, opinions and other documents, as
may be necessary or advisable to register or qualify the securities subject to such Demand Registration, including under the securities laws of such states as the Holders shall reasonably request; provided, however, that no such
qualification shall be required in any jurisdiction where, as a result thereof, the Partnership would become subject to general service of process or to taxation or qualification to do business in such jurisdiction solely as a result of registration
and (2) such forms, amendments, supplements, prospectuses, certificates, letters, opinions and other documents as may be necessary to apply for listing or to list the Registrable Securities subject to such Demand

  
 9 

 
Registration on the Trading Market and (B) do any and all other acts and things that may be necessary or appropriate or reasonably requested by the Holders to enable the Holders to
consummate a public sale of such Registrable Securities in accordance with the intended timing and method or methods of distribution thereof. 
 (x) In the event a Holder transfers Registrable Securities included on a Registration Statement and such Registrable Securities remain Registrable Securities following such transfer, at the request of
such Holder, the Partnership shall amend or supplement such Registration Statement or related Prospectus as may be necessary in order to enable such transferee to offer and sell such Registrable Securities pursuant to such Registration Statement.

 (c) Piggyback Registration. 
 (i) If the Partnership shall at any time propose to file a Registration Statement, other than pursuant to a Demand Registration, for an offering of Common Units for cash (whether in connection with a
public offering of Common Units by the Partnership, a public offering of Common Units by unitholders, or both, but excluding an offering relating solely to an employee benefit plan, an offering relating to a transaction on Form S-4 or an offering on
any registration statement form that does not permit secondary sales), the Partnership shall promptly notify all Holders of such proposal reasonably in advance of (and in any event at least ten Business Days before) the anticipated initial filing
date of such Registration Statement (the “Piggyback Notice”). The Piggyback Notice shall offer the Holders the opportunity to include for registration in such Registration Statement the number of Common Units constituting
Registrable Securities as they may request (a “Piggyback Registration”). The Partnership shall use reasonable best efforts to include in each such Piggyback Registration such Registrable Securities for which the Partnership has
received written requests within five Business Days after mailing of the Piggyback Notice (“Piggyback Request”) for inclusion therein. If a Holder decides not to include all of its Common Units constituting Registrable Securities in
any Registration Statement thereafter filed by the Partnership, such Holder shall nevertheless continue to have the right to include any Registrable Securities in any subsequent registration statement or registration statements as may be filed by
the Partnership with respect to offerings of Common Units, all upon the terms and conditions set forth herein. 
 (ii) If the
Registration Statement under which the Partnership gives notice under this Section 2(c) is for an underwritten offering, the Partnership shall so advise the Holders of Registrable Securities. In such event, the right of any Holder to be
included in a registration pursuant to this Section 2(c) shall be conditioned upon such Holder’s participation in such underwriting and the inclusion of such Holder’s Registrable Securities in the underwriting to the extent provided
herein. If the managing underwriter or managing underwriters of such offering advise the Partnership that, in their opinion, the inclusion of all of such Holders’ Registrable Securities in the subject Registration Statement would have a
material adverse effect on the marketability of the offering, then the Partnership shall so advise all Holders of Registrable Securities that would otherwise be underwritten pursuant hereto, and the number of Registrable Securities that may be
included in the underwriting shall be reduced to equal the number of Registrable Securities that such managing underwriter or managing underwriters advise the Partnership can be sold without having such material adverse effect. The aggregate number
of Registrable Securities to be included in such underwriting as a result of the reduction described 

  
 10 

 
in the immediately preceding sentence shall be allocated (i) first to Bronco based on the number of Registrable Securities proposed to be sold by Bronco, and, subject to the
Partnership’s need for capital and without reducing the number of Common Units to be issued by the Partnership in such underwritten offering, Bronco shall have the right to include a number of Registrable Securities equal to 25% of the total
number of Common Units proposed to be sold, and (ii) second, among the other Holders seeking to include their Registrable Securities in the underwriting on a pro rata basis based on the percentage derived by dividing (x) the number of
Registrable Securities owned by such Holder by (y) the total number of Registrable Securities owned by such other Holders (excluding Bronco) seeking to include their Registrable Securities in the underwriting. If any Holder disapproves of the
terms of any such underwriting, such Holder may elect to withdraw therefrom by written notice to the Partnership and the managing underwriter(s) delivered on or prior to the time of pricing of such offering. For the avoidance of doubt, the
securities to be sold for the account of the Partnership pursuant to this section 2(c) shall be included in such underwriting before any Registrable Securities to be sold by any Holders or any other Person. Any Registrable Securities excluded or
withdrawn from such underwriting shall be withdrawn from the registration. 
 (iii) The Partnership shall have the right to
terminate or withdraw any registration initiated by it under this Section 2(c) prior to the Effective Date of such Registration Statement whether or not any Holder has elected to include Registrable Securities in such Registration Statement.
The registration expenses of such withdrawn registration (including reasonable attorneys fees of the Holders that elected to include Registrable Securities in such Registration Statement) shall be borne by the Partnership in accordance with
Section 5 hereof. 
 (d) General Provisions. 
 (i) All registration rights granted under this Section 2 shall continue to be applicable with respect to any Holder for so long as may be required for each such Holder to sell all of the Registrable
Securities held by such Holder as provided in this Agreement. 
 (ii) Any Demand Notice or Piggyback Request shall
(i) specify the Registrable Securities intended to be offered and sold by the Holder making the request, (ii) express such Holder’s present intent to offer such Registrable Securities for distribution, (iii) describe the nature
or method of the proposed offer and sale of Registrable Securities, and (iv) contain the undertaking of such Holder to provide all such information and materials and take all action as may reasonably be required in order to permit the
Partnership to comply with all applicable requirements in connection with the registration of such Registrable Securities. 

(iii) The Partnership has not entered into any agreement which (a) conflicts with the provisions hereof in any material respect or
(b) would allow any Holder to include Registrable Securities in any Registration Statement filed by the Partnership on a basis that is superior or more favorable in any material respect to the rights granted to the Holders hereunder.

 (iv) Notwithstanding any provision of this Agreement to the contrary, the Partnership may voluntarily suspend the
effectiveness of any Shelf Registration Statement or may otherwise require the discontinuance of offers under the Shelf Registration Statement for a period of up to 90 days if the Conflicts Committee, proceeding in good faith, determines the

  
 11 

 
offering of any Registrable Securities pursuant to such Shelf Registration Statement would require an Adverse Disclosure (a “Suspension”); provided, however, that in no
event shall the Partnership effect Suspensions under this Section 2(d)(iv) for more than an aggregate of 180 days in any 12-month period. The Partnership shall notify each Holder eligible to sell Registrable Securities under such Shelf
Registration Statement promptly of any Suspensions and, upon receipt of such notice, each such Holder shall forthwith discontinue disposition of such Registrable Securities under such Shelf Registration Statement until such Holder’s receipt of
the copies of the supplemental Prospectus or amended Shelf Registration Statement or until it is advised in writing by the Partnership that the use of the applicable Prospectus may be resumed, and, in either case, has received copies of any
additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such Shelf Registration Statement. In addition, the Partnership shall promptly notify each Holder of the termination or lifting of any such
Suspension. 
 3. Registration Procedures. The procedures to be followed by the Partnership and each Holder
electing to sell Registrable Securities included in a Registration Statement pursuant to this Agreement, and the respective rights and obligations of the Partnership and such Holders, with respect to the preparation, filing and effectiveness of such
Registration Statement, are as follows: 
 (a) The Partnership will, at least five Business Days prior to the anticipated filing
of a Registration Statement or any related Prospectus or any amendment or supplement thereto (other than amendments and supplements filed principally for the purpose of naming Holders and providing information with respect thereto), (i) furnish
to such Holders copies of all such documents proposed to be filed and (ii) give good faith consideration to such comments as any Holder reasonably shall propose. 
 (b) The Partnership will use reasonable best efforts to (i) prepare and file with the Commission such amendments, including post-effective amendments, and supplements to each Registration Statement
and the Prospectus used in connection therewith as may be necessary under applicable law to keep such Registration Statement continuously effective with respect to the disposition of all Registrable Securities covered thereby for its Effectiveness
Period and, subject to the limitations contained in this Agreement, prepare and file with the Commission such additional Registration Statements in order to register for resale under the Securities Act all of the Registrable Securities held by the
applicable Holders; (ii) cause the related Prospectus to be amended or supplemented by any required prospectus supplement, and as so supplemented or amended to be filed pursuant to Rule 424; and (iii) respond to any comments received
from the Commission with respect to each Registration Statement or any amendment thereto and provide such Holders true and complete copies of all correspondence from and to the Commission relating to such Registration Statement that pertains to such
Holders as Selling Holders. 
 (c) The Partnership will comply in all material respects with the provisions of the Securities Act
and the Exchange Act with respect to the Registration Statements and the disposition of all Registrable Securities covered by each Registration Statement. 

  
 12 

 (d) The Partnership will use reasonable best efforts to notify such Holders promptly: (i)(A)
when the Commission notifies the Partnership whether there will be a “review” of such Registration Statement and whenever the Commission comments in writing on such Registration Statement (in which case the Partnership shall provide true
and complete copies thereof and all written responses thereto to each of such Holders and in good faith consider such Holder’s comments in the Registration Statement); and (B) with respect to each Registration Statement or any
post-effective amendment thereto, when the same has been declared effective; (ii) of any request by the Commission or any other federal or state governmental authority for amendments or supplements to a Registration Statement or Prospectus or
for additional information that pertains to such Holders as sellers of Registrable Securities; (iii) of the issuance by the Commission of any stop order suspending the effectiveness of a Registration Statement covering any or all of the
Registrable Securities or the initiation of any Proceedings for that purpose; (iv) of the receipt by the Partnership of any notification with respect to the suspension of the qualification or exemption from qualification of any of the
Registrable Securities for sale in any jurisdiction, or the initiation or threatening of any Proceeding for such purpose; and (v) of the occurrence of (but not the nature or details concerning) any event or passage of time that makes any
statement made in such Registration Statement or Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material respect or that requires any revisions to such Registration Statement, Prospectus or
other documents so that, in the case of such Registration Statement or the Prospectus, as the case may be, it will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to
make the statements therein, in the light of the circumstances under which they were made, not misleading (provided, however, that no notice by the Partnership shall be required pursuant to this clause (v) in the event that the
Partnership either promptly files a prospectus supplement to update the Prospectus or a Form 8-K or other appropriate Exchange Act report that is incorporated by reference into the Registration Statement, which in either case, contains the requisite
information that results in such Registration Statement no longer containing any untrue statement of material fact or omitting to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were
made, not misleading). 
 (e) The Partnership will use reasonable best efforts to avoid the issuance of, or, if issued, obtain
the withdrawal of (i) any order suspending the effectiveness of a Registration Statement, or (ii) any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities for sale in any jurisdiction, at
the earliest practicable time, or if any such order or suspension is made effective during any Suspension period, at the earliest practicable time after the Suspension period is over. 

(f) During the Effectiveness Period, the Partnership will furnish to each such Holder, without charge, at least one conformed copy of each
Registration Statement and each amendment thereto and all exhibits to the extent requested by such Holder (including those incorporated by reference) promptly after the filing of such documents with the Commission; provided, that the
Partnership will not have any obligation to provide any document pursuant to this clause that is available on the Commission’s EDGAR system. 

  
 13 

 (g) The Partnership will promptly deliver to each Holder, without charge, as many copies of
each Prospectus or Prospectuses (including each form of Prospectus) and each amendment or supplement thereto as such Holder may reasonably request during the Effectiveness Period. The Partnership consents to the use of such Prospectus and each
amendment or supplement thereto by each of the Selling Holders in connection with the offering and sale of the Registrable Securities covered by such Prospectus and any amendment or supplement thereto. 

(h) The Partnership will have caused or will cause, as the case may be, all Registrable Securities registered pursuant to this Agreement
to be listed on the Trading Market and will have provided or will provide, as the case may be, a transfer agent and registrar for Registrable Securities covered by a Registration Statement not later than the Effective Date of such Registration
Statement and for as long as Registrable Securities covered by a Registration Statement remain outstanding. 
 (i) The
Partnership will cooperate with such Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be delivered to a transferee pursuant to a Registration Statement, which certificates shall be free
of all restrictive legends indicating that the Registrable Securities are unregistered or unqualified for resale under the Securities Act, Exchange Act or other applicable securities laws, and to enable such Registrable Securities to be in such
denominations and registered in such names as any such Holder may request in writing. 
 (j) Upon the occurrence of any event
contemplated by Section 3(d)(v), as promptly as reasonably possible, the Partnership will prepare a supplement or amendment, including a post-effective amendment, if required by applicable law, to the affected Registration Statement or a
supplement to the related Prospectus or any document incorporated or deemed to be incorporated therein by reference, and file any other required document so that, as thereafter delivered, no Registration Statement nor any Prospectus will contain an
untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading. 

(k) Such Holders may distribute the Registrable Securities by means of an underwritten offering; provided that (i) such
Holders provide written notice to the Partnership of their intention to distribute Registrable Securities by means of an underwritten offering, (ii) the right of any Holder to include such Holder’s Registrable Securities in such
registration shall be conditioned upon such Holder’s participation in such underwriting and the inclusion of such Holder’s Registrable Securities in the underwriting to the extent provided herein, (iii) the managing underwriter or
managing underwriters thereof shall either be one of the lead underwriters of the Initial Public Offering or otherwise be subject to the approval of the Partnership (which shall not be unreasonably withheld), (iv) each Holder participating in
such underwritten offering agrees to enter into an underwriting agreement in customary form and sell such Holder’s Registrable Securities on the basis provided in any reasonable underwriting arrangements approved by the Partnership and
(v) each Holder participating in such underwritten offering completes and executes all questionnaires, powers of attorney, indemnities, underwriting agreements and other documents reasonably and customarily required under the terms of such
underwriting arrangements, provided, that, no Holder included in any underwritten registration shall be required to make any representations or warranties to the Partnership or the 

  
 14 

 
underwriters (other than representations and warranties regarding such Holder) or to undertake any indemnification obligations to the Partnership or the underwriters except as provided in
Section 6. The Partnership hereby agrees with each Holder that, in connection with any underwritten offering in accordance with the terms hereof, it will negotiate in good faith and execute all indemnities, underwriting agreements and other
documents reasonably required under the terms of such underwriting arrangements, including using reasonable best efforts to procure customary legal opinions and auditor “comfort” letters. 

(l) In the event such Holders seek to complete an underwritten offering, for a reasonable period prior to the filing of any Registration
Statement and throughout the Effectiveness Period, the Partnership will make available upon reasonable notice at the Partnership’s principal place of business or such other reasonable place for inspection by the Selling Holder and the managing
underwriter or managing underwriters selected in accordance with Section 3(k) such financial and other information and books and records of the Partnership, and cause the officers, employees, counsel and independent certified public accountants
of the Partnership to respond to such inquiries, as shall be reasonably necessary (and in the case of counsel, not violate an attorney-client privilege in such counsel’s reasonable belief) to conduct a reasonable investigation within the
meaning of Section 11 of the Securities Act. 
 (m) In connection with any registration of Registrable Securities pursuant
to this Agreement, the Partnership will take such reasonable best actions as are necessary or advisable in order to expedite or facilitate the disposition of Registrable Securities by such Holders, including using reasonable best efforts to cause
appropriate officers and employees to be available, on a customary basis and upon reasonable notice, to meet with prospective investors in presentations, meetings and road shows. 

(n) The Partnership will have no obligation to include in a Registration Statement or Piggyback Registration Registrable Securities of a
Holder who has failed to timely furnish such information requested in writing by the Partnership no less than 10 days prior to the effective date of the Registration Statement, which, in the opinion of counsel to the Partnership, is reasonably
required in order for the Registration Statement or related Prospectus to comply with the Securities Act, provided that if the Registration Statement is not yet effective, the Partnership agrees to amend the Registration Statement to include the
Registrable Securities of a Holder when such information is provided. 
 (o) In connection with any Initial Public Offering of
Common Units, each Holder hereby agrees that such Holder shall enter into a standard lock-up agreement covering such Registrable Securities and for a period specified by the managing underwriter or managing underwriters (the “Lock-Up
Period”); provided, however, that the Lock-Up Period with respect to Bronco shall not exceed 180 days following the closing date of the offering of Common Units. In addition, if (A) during the last 17 days of the Lock-Up Period,
the Partnership issues an earnings release or material news or a material event relating to the Partnership occurs or (B) prior to the expiration of the Lock-Up Period, the Partnership announces that it will release earnings results during the
16-day period beginning on the last day of the Lock-Up Period, then the restrictions imposed by this Section 3(o) shall continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release or the
announcement of the material news or the occurrence of the material event. Each Holder agrees to execute and deliver such 

  
 15 

 
other agreements as may be reasonably requested by the Partnership or the underwriter which are consistent with the foregoing or which are necessary to give further effect thereto. In addition,
if requested by the Partnership or the representative of the underwriters of Common Units, each Holder shall provide, within five Business Days of such request, such information as may be reasonably and customarily required by the Partnership or
such representative in connection with the completion of any public offering of the Common Units pursuant to a Registration Statement, unless such Holder reasonably believes that such information constitutes material and non-public information or
such Holder is otherwise subject to confidentiality obligations with respect to the requested information. The obligations described in this Section 3(o) shall not apply to a registration relating solely to employee benefit plans on Form S-1 or
Form S-8 or similar forms that may be promulgated in the future, or a registration relating solely to a transaction on Form S-4 or similar forms that may be promulgated in the future. The Partnership may impose stop-transfer instructions with
respect to the Common Units subject to the foregoing restriction until the end of the Lock-Up Period. 
 (p) The Partnership will
use its reasonable best efforts to comply with the securities laws of the United States and other applicable jurisdictions and all applicable rules and regulations of the Commission and comparable governmental agencies in other applicable
jurisdictions and make generally available to the Holders, in each case as soon as practicable after the Effective Date (it being understood that the Partnership shall have until at least 410 days or, if the fourth quarter following the fiscal
quarter that includes the Effective Date is the last fiscal quarter of the Partnership’s fiscal year, 455 days after the end of the Partnership’s then-current fiscal quarter), an earnings statement of the Partnership (which need not be
audited) complying with the provisions of Section 11(a) of the Securities Act (including, at the option of the Partnership, Rule 158). 
 4. Bronco IPO Consultation. The Board of Directors will determine all matters related to the Initial Public Offering and the related registration process. The Parties acknowledge and agree
that the Sponsor Parties and Bronco each desire for the Initial Public Offering to be implemented upon terms and conditions that are consistent with prevailing market terms for the public offering of equity securities of comparable master limited
partnerships at the time such Initial Public Offering is implemented. In furtherance of this desire, the Sponsor Parties, the General Partner and the Partnership agree that such IPO Registration shall be implemented in good faith at such prevailing
market terms, including with respect to the applicable distribution coverage ratio, as determined in consultation with the managing underwriter at the time of the Initial Public Offering. For so long as Bronco holds at least the Initial Bronco
Amount, Bronco shall be involved in planning and negotiating the terms of the Initial Public Offering or such other registration process, including, without limitation, in determining the percentage of the Partnership to be offered to the public and
the valuation metrics associated with the Initial Public Offering or such registration process. To that end, Bronco will be included in any applicable working group list with respect to an Initial Public Offering and will be given notice of, and an
opportunity to participate in, all discussions between the Partnership and/or any Sponsor Party or Affiliate of a Sponsor Party and any banker, underwriter or other third party regarding management preparation, pricing and other material matters
related to the Initial Public Offering and the related registration process. Notwithstanding anything in this Agreement to the contrary, the rights provided to Bronco in the two immediately preceding sentences shall not be transferable in connection
with any transfer of Registrable Securities by Bronco. 

  
 16 

 5. Registration Expenses. All Registration Expenses incident to the
Parties’ performance of or compliance with their respective obligations under this Agreement or otherwise in connection with any IPO Registration, Demand Registration or Piggyback Registration (excluding any Selling Expenses) shall be borne by
the Partnership, whether or not any Registrable Securities are sold pursuant to a Registration Statement. “Registration Expenses” shall include, without limitation, (i) all registration and filing fees (including fees and
expenses (A) with respect to filings required to be made with the Trading Market, (B) in connection with any filings required to be made with the Financial Industry Regulatory Authority, Inc. and (C) in compliance with applicable
state securities or “Blue Sky” laws), (ii) printing expenses (including expenses of printing certificates for Common Units and of printing prospectuses if the printing of prospectuses is reasonably requested by a Holder included in
the Registration Statement), (iii) messenger, telephone and delivery expenses, (iv) fees and expenses of counsel (including local and special), auditors and accountants (including the expenses of any “cold comfort” letters
required or incidental to the performance of such obligations) for the Partnership, (v) Securities Act liability insurance, if the Partnership so desires such insurance, (vi) fees and expenses of all other Persons retained by the
Partnership in connection with the consummation of the transactions contemplated by this Agreement, (vii) the costs and expenses related to investor presentations on any road show undertaken in connection with the marketing of the Common Units,
including, expenses associated with any electronic road show, travel and lodging expenses of the officers and employees of the General Partner or any Group Member, (viii) the costs and expenses of qualifying the Common Units for inclusion in
the book-entry settlement system of the DTC and (ix) the fees and expenses of the transfer agent and registrar. Except as provided herein, all Selling Expenses shall be borne by the Selling Holders pro rata in proportion to the number of
Registrable Securities sold by each Selling Holder or as they may otherwise agree; provided, however, that any and all reasonable fees and expenses of counsel incurred by Bronco in connection with the IPO Registration shall be borne by
the Partnership, provided that such reimbursed fees and expenses shall not, in the aggregate, exceed $250,000 if the IPO Date occurs on or before December 31, 2013, which amount shall increase by $25,000 per quarter (and partial quarter) after
December 31, 2013 until the IPO Date occurs. 
 6. Indemnification. 

(a) By the Partnership. If underwriters are engaged in connection with any registration referred to in Section 2, the
Partnership shall provide indemnification, representations, covenants, opinions and other assurances to the underwriters in form and substance reasonably satisfactory to such underwriters and the Partnership. In the event of a registration of any
Registrable Securities under the Securities Act pursuant to this Agreement, in addition to and not in limitation of the Partnership’s obligations under Section 7.7 of the Partnership Agreement, to the fullest extent permitted by applicable
law, the Partnership shall indemnify and hold harmless each Selling Holder, its officers, directors and each Person who controls the Holder (within the meaning of the Securities Act), and any agent thereof (collectively, “Indemnified
Persons”) from and against any and all losses, claims, damages, liabilities, joint or several, expenses (including legal fees and expenses), judgments, fines, 

  
 17 

 
penalties, interest, settlements or other amounts arising from any and all claims, demands, actions, suits or proceedings, whether civil, criminal, administrative or investigative, in which any
Indemnified Person may be involved, or is threatened to be involved, as a party or otherwise, under the Securities Act or otherwise (collectively, “Losses”), based upon, arising out of or resulting from any untrue statement or
alleged untrue statement of any material fact contained in the Registration Statement, preliminary prospectus, final prospectus or issuer free writing prospectus under which any Registrable Securities were registered or sold by such Selling Holder
under the Securities Act, or arising out of, based upon or resulting from the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading; provided,
however, that the Partnership shall not be liable to any Indemnified Person to the extent that any such Loss arises out of, is based upon or results from an untrue statement or alleged untrue statement or omission or alleged omission so made in
such Registration Statement, preliminary prospectus, final prospectus or issuer free writing prospectus in reliance upon or in conformity with written information furnished to the Partnership by or on behalf of such Selling Holder specifically for
use in the preparation thereof. 
 (b) By Each Selling Holder. Each Selling Holder agrees, to the fullest extent permitted
by law, to severally and not jointly, indemnify and hold harmless the Partnership, the General Partner’s officers and its directors and each Person who controls the Partnership (within the meaning of the Securities Act) and any agent thereof to
the same extent as the foregoing indemnity from the Partnership to the Selling Holders, but only with respect to information regarding such Selling Holder furnished in writing by or on behalf of such Selling Holder expressly for inclusion in such
Registration Statement, preliminary prospectus, final prospectus or free writing prospectus and any indemnification hereunder will be limited to the amount of net proceeds received from the sale of Registrable Securities by such Holder under such
Registration Statement. 
 7. Facilitation of Sales Pursuant to Rule 144. 

(a) Upon effectiveness of a Registration Statement with the Commission, the Partnership shall use reasonable best efforts to timely file
the reports required to be filed by it under the Exchange Act or the Securities Act (including the reports under Sections 13 and 15(d) of the Exchange Act referred to in subparagraph (c)(1) of Rule 144), and take such further action as any Holder
may reasonably request, all to the extent required from time to time to enable the Holders to sell Registrable Securities without registration under the Securities Act within the limitations of the exemption provided by Rule 144. 

(b) The Parties agree that, as of the date of this Agreement, it is the intent of the Parties that the ownership, operation and management
of the Partnership will be structured so that Bronco will not be considered an “affiliate” (as such term is defined in Rule 144) of the Partnership. In connection therewith on or before the 91st day following the IPO Closing Date, subject
to compliance with applicable law and so long as Bronco together with its Affiliates (i) owns less than 15% of the Common Units, and (ii) has no right to designate any member of the Board of Directors, the Partnership will remove any
transfer restrictions with respect to Common Units owned by Bronco, including providing such authorizations, directions and legal opinions as may be reasonably requested by the transfer agent that authorize the removal of any restrictive legends on
such Common Units and/or directing the transfer agent to issue such Common Units without any such legend upon sale by Bronco of such Common Units. 

  
 18 

 8. Limitation on Subsequent Registration Rights. From and after the date
hereof, the Partnership shall not, without the prior written consent of Bronco (for so long as it is a Holder) and the Holders of a majority of the then outstanding Registrable Securities, enter into any agreement with any current or future holder
of any securities of the Partnership that would allow such current or future holder to require the Partnership to include securities in any registration statement filed by the Partnership on a basis that is senior in any way to the registration
rights granted to the Initial Holders hereunder. 
 9. Miscellaneous. 

(a) Discontinued Disposition. Each Holder agrees by its acquisition of such Registrable Securities that, upon receipt of a notice
from the Partnership of the occurrence of any event of the kind described in clauses (ii) through (v) of Section 3(d), such Holder shall forthwith discontinue disposition of such Registrable Securities under the Registration Statement
until such Holder’s receipt of the copies of the supplemental Prospectus or amended Registration Statement or until it is advised in writing by the Partnership that the use of the applicable Prospectus may be resumed, and, in either case, has
received copies of any additional or supplemental filings that are incorporated or deemed to be incorporated by reference in such Prospectus or Registration Statement. The Partnership may provide appropriate stop orders to enforce the provisions of
this Section 9(a). 
 (b) Recapitalization, Exchanges, etc. Affecting the Common Units. The provisions of this
Agreement shall apply to the full extent set forth herein with respect to any and all Partnership Interests or any successor or assign of the Partnership (whether by merger, consolidation, sale of assets or otherwise) which may be issued in respect
of, in exchange for or in substitution of, the Registrable Securities, including any equity securities that may be issued in exchange for Registrable Securities in connection with any merger, consolidation or other business combination involving the
Partnership and any of its subsidiaries, and shall be appropriately adjusted for combinations, recapitalizations and the like occurring after the date of this Agreement. The Partnership will not take any action, or permit any change to occur, with
respect to the terms of its securities that would materially and adversely affect the ability of the Holders to include Registrable Securities in a registration undertaken pursuant to this Agreement or that would adversely affect the marketability
of such Registrable Securities in any such registration. 
 (c) Change of Control. The Partnership shall not merge,
consolidate or combine with any other Person unless the agreement providing for such merger, consolidation or combination expressly provides for the continuation of the registration rights specified in this Agreement with respect to the Registrable
Securities or other equity securities issued pursuant to such merger, consolidation or combination. 
 (d) Specific
Performance. Damages in the event of breach of this Agreement by a Party may be difficult, if not impossible, to ascertain, and it is therefore agreed that each such Party, in addition to and without limiting any other remedy or right it may
have, will have 

  
 19 

 
the right to an injunction or other equitable relief in any court of competent jurisdiction, enjoining any such breach, and enforcing specifically the terms and provisions hereof, and each of the
Parties hereby waives any and all defenses it may have on the ground of lack of jurisdiction or competence of the court to grant such an injunction or other equitable relief (including the requirement to post bond). The existence of this right will
not preclude any such Party from pursuing any other rights and remedies at law or in equity which such Party may have. 
 (e)
Amendments. This Agreement may be amended only by means of a written amendment signed by (i) the Partnership, (ii) the Holders of 66 2/3% of the then-outstanding Registrable Securities and (iii) for so long as it is a Holder,
Bronco; provided, however, that no such amendment shall adversely affect the rights of any Holder hereunder without the consent of such Holder. 
 (f) Notices. All notices, demands, requests and other communications required or permitted to be given or made under this Agreement shall be in writing and shall be deemed given or made when
delivered in person or when sent by first class United States mail or by other means of written communication to the Person at the address described below: 
 (i) if to a Holder, at (A) the most current mailing or email address given by such Holder to the Partnership in accordance with the provisions of this Section 9(f), which addresses initially
are, with respect to the Holders, set forth opposite each Holder’s name on the signature page hereto; 
 (ii) if to a
transferee of a Holder, to such Holder at the mailing address or email address provided pursuant to this Section 9(f); and 

(iii) if to the Partnership, to each of the following: (A) 1111 Louisiana Street, Houston, Texas 77002 or Email:
Gary.Whitlock@CenterPointEnergy.com, Attention: Chief Financial Officer and (B) 321 North Harvey, P.O. Box 321, Oklahoma City, Oklahoma 73101-0321 or Email: trauscrs@oge.com, Attention: Sean Trauschke, notice of which is given in accordance
with the provisions of this Section 9(f). 
 The terms “in writing,” “written communications,” “written
notice” and words of similar import shall be deemed satisfied under this Agreement by use of email and other forms of electronic communication. All such notices and communications shall be deemed to have been received (i) at the time
delivered by hand, if personally delivered; (ii) the date of transmission, if such notice or communication is delivered via facsimile or email prior to 5:00 p.m. Central Time on a Business Day; (iii) the first Business Day after the date
of transmission, if such notice or communication is delivered via facsimile or email (A) on a day other than a Business Day or (B) later than 5:00 p.m. Central Time on a Business Day and earlier than 11:59 p.m. Central Time on such date;
or (iv) when actually received, if sent by any other means. 
 (g) Successors and Assigns. This Agreement shall be
binding upon and inure to the benefit of the Parties hereto and their heirs, executors, administrators, successors, legal representatives and permitted assigns. Except as provided in this Section 9(g), this Agreement, and any rights or
obligations hereunder, may not be assigned without the prior written consent of 

  
 20 

 
the Partnership and the Holders. Notwithstanding anything in the foregoing to the contrary (but subject to the last sentence of Section 4), the registration rights of a Holder
pursuant to this Agreement with respect to all or any portion of its Registrable Securities may be assigned without such consent (but only with all related obligations) with respect to such Registrable Securities (and any Registrable Securities
issued as a dividend or other distribution with respect to, in exchange for or in replacement of such Registrable Securities) by such Holder to a transferee of such Registrable Securities; provided (i) the transfer of the underlying
Registrable Securities was made in accordance with the terms of the Partnership Agreement; (ii) the Partnership is, promptly after such transfer, furnished with written notice of the name, mailing address and email address of such transferee or
assignee and the Registrable Securities with respect to which such registration rights are being assigned; and (iii) such transferee or assignee agrees in writing to be bound by and subject to the terms set forth in this Agreement. The
Partnership may not assign its respective rights or obligations hereunder without the prior written consent of each of the Holders. 
 (h) Counterparts. This Agreement may be executed in counterparts, all of which together shall constitute an agreement binding on all the Parties, notwithstanding that all such Parties are not
signatories to the original or the same counterpart. Each Party shall become bound by this Agreement immediately upon affixing its signature hereto. 
 (i) Applicable Law; Forum, Venue and Jurisdiction. This Agreement shall be construed in accordance with and governed by the laws of the State of Delaware without regard to the principles of
conflicts of law that would request an application of another state’s laws. Each of the Parties: 
 (i)
irrevocably agrees that any claims, suits, actions or proceedings (A) arising out of or relating in any way to this Agreement (including any claims, suits or actions to interpret, apply or enforce the provisions of this Agreement or the duties,
obligations or liabilities among the Parties, or the rights or powers of, or restrictions on, the Parties) or (B) asserting a claim arising pursuant to any provision of the Delaware Act shall be exclusively brought in the Court of Chancery of
the State of Delaware (or, if such court does not have subject matter jurisdiction, any other court located in the State of Delaware with subject matter jurisdiction), in each case regardless of whether such claims, suits, actions or proceedings
sound in contract, tort, fraud or otherwise, are based on common law, statutory, equitable, legal or other grounds, or are derivative or direct claims; 
 (ii) irrevocably submits to the exclusive jurisdiction of such courts in connection with any such claim, suit, action or proceeding; 

(iii) agrees not to, and waives any right to, assert in any such claim, suit, action or proceeding that (A) it is not
personally subject to the jurisdiction of such courts or of any other court to which proceedings in such courts may be appealed, (B) such claim, suit, action or proceeding is brought in an inconvenient forum, or (C) the venue of such
claim, suit, action or proceeding is improper; 

  
 21 

 (iv) expressly waives any requirement for the posting of a bond by a party
bringing such claim, suit, action or proceeding; and 
 (v) consents to process being served in any such claim,
suit, action or proceeding by mailing, certified mail, return receipt requested, a copy thereof to such party at the address in effect for notices hereunder, and agrees that such services shall constitute good and sufficient service of process and
notice thereof; provided, nothing in clause (v) hereof shall affect or limit any right to serve process in any other manner permitted by law. 
 (j) Cumulative Remedies. The remedies provided herein are cumulative and not exclusive of any remedies provided by law. 
 (k) Invalidity of Provisions. If any provision or part of a provision of this Agreement is or becomes for any reason, invalid, illegal or unenforceable in any respect, the validity, legality and
enforceability of the remaining provisions and/or parts thereof contained herein shall not be affected thereby and this Agreement shall, to the fullest extent permitted by law, be reformed and construed as if such invalid, illegal or unenforceable
provision, or part of a provision, had never been contained herein, and such provisions and/or part shall be reformed so that it would be valid, legal and enforceable to the maximum extent possible. 

(l) Facsimile Signatures. The use of facsimile or electronic signatures affixed in the name and on behalf of the Party executing is
expressly permitted by this Agreement. 
 (m) Entire Agreement. This Agreement, together with the other Transaction
Documents, constitute the entire agreement among the Parties with respect to the subject matter hereof and supersede all prior contracts or agreements with respect to the subject matter hereof and the matters addressed or governed hereby or in the
other Transaction Documents, whether oral or written. Without limiting the foregoing, each of the Parties acknowledges and agrees that (i) this Agreement is being executed and delivered in connection with each of the other Transaction Documents
and the transactions contemplated hereby and thereby, (ii) the performance of this Agreement and the other Transaction Documents and expected benefits herefrom and therefrom are a material inducement to the willingness of the Parties to enter
into and perform this Agreement and the other Transaction Documents and the transactions described herein and therein, (iii) the Parties would not have been willing to enter into this Agreement in the absence of the entrance into, performance
of, and the economic interdependence of, the Transaction Documents, (iv) the execution and delivery of this Agreement and the other Transaction Documents and the rights and obligations of the parties hereto and thereto are interrelated and part
of an integrated transaction being effected pursuant to the terms of this Agreement and the other Transaction Documents, (v) irrespective of the form such documents have taken, or otherwise, the transactions contemplated by this Agreement and
the other Transaction Documents are necessary elements of one and the same overall and integrated transaction, (vi) the transactions contemplated by this Agreement and by the other Transaction Documents are economically interdependent and
(vii) such Party will cause any of its successors or permitted assigns to expressly acknowledge and agree to this Section 9(m) prior to any assignment or transfer of this Agreement, by operation of law or otherwise. 

  
 22 

 [Signature Pages Follow] 

  
 23 

 IN WITNESS WHEREOF, the Parties have executed this Agreement as of the date first written
above. 
  

					
		 	CENTERPOINT ENERGY FIELD SERVICES LP
			
		 	By:	 	CNP OGE GP LLC,
		 		 	its General Partner
			
		 	By:	 	 /s/ David M. McClanahan

		 		 	Name: David M. McClanahan
		 		 	Title: Interim Chairman
		
	 1111 Louisiana Street
	 	CENTERPOINT ENERGY RESOURCES CORP.
	 Houston, TX 77002
	 		 	
	 Attention: Chief Financial Officer
	 	By:	 	 /s/ Gary L. Whitlock

	 Fax: 713.207.9680
	 		 	Name: Gary L. Whitlock
	 Gary.Whitlock@CenterPointEnergy.com
	 		 	Title: Executive Vice President and Chief
		 		 	 Financial Officer

		
	 321 North Harvey
	 	OGE ENOGEX HOLDINGS LLC
	 P.O. Box 321
	 		 	
	 Oklahoma City, Oklahoma 73101-0321
	 	By:	 	OGE Energy Corp., its Sole Member
	 Attention: Sean Trauschke
	 		 	
	 Fax: 405.553.3760
	 	By:	 	 /s/ Sean Trauschke

	 trauscrs@oge.com
	 		 	Name: Sean Trauschke
		 		 	Title: Vice President and Chief Financial Officer
		
	 c/o ArcLight Capital Partners, LLC
	 	ENOGEX HOLDINGS LLC
	 200 Clarendon Street, 55th Floor
	 		 	
	 Boston, Massachusetts 02117
	 	By:	 	 /s/ Robb E. Turner

	 Attention: Christine M. Miller
	 		 	Name: Robb E. Turner
	 Fax: 617.867.4698
	 		 	Title: Vice President
	 cmiller@arclightcapital.com
	 		 	

 [Signature Page to Registration Rights Agreement]EX-10.4

 Exhibit 10.4 
 EXECUTION VERSION 
 OMNIBUS AGREEMENT 

among 

CENTERPOINT ENERGY, INC., 
 OGE ENERGY CORP., 
 ENOGEX HOLDINGS LLC 

AND 

CENTERPOINT ENERGY FIELD SERVICES LP 

 OMNIBUS AGREEMENT 

THIS OMNIBUS AGREEMENT (“Agreement”) is entered into on, and effective as of, May 1, 2013, and is by and
among CenterPoint Energy, Inc, a Texas corporation (“CNP”), OGE Energy Corp., an Oklahoma corporation (“OGE”), Enogex Holdings LLC, a Delaware limited liability company
(“Bronco”), and CenterPoint Energy Field Services LP, a Delaware limited partnership (“Opco”). The above-named entities are sometimes referred to in this Agreement individually as a
“Party”, and collectively as the “Parties.” 
 R E C I T A L S:

  

	 	1.	It is a condition to the consummation of the transactions contemplated by the Master Formation Agreement that the Parties enter into this Agreement.

  

	 	2.	The Parties desire by their execution of this Agreement to evidence their agreement, as more fully set forth in Article II, with respect to certain
indemnification obligations of CNP, OGE and Bronco to Opco. 

  

	 	3.	The Parties desire by their execution of this Agreement to evidence their agreement, as more fully set forth in Article III, with respect to certain
business opportunities to be offered to Opco by CNP and OGE and certain obligations of CNP, OGE and Bronco to Opco. 

  

	 	4.	The Parties desire by their execution of this Agreement to evidence their agreement, as more fully set forth in Article IV, to certain additional covenants.

 NOW, THEREFORE, in consideration of the premises set forth above and the respective representations,
warranties, covenants, agreements and conditions contained in this Agreement, as well as other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties hereto agree as follows: 

ARTICLE I 

DEFINITIONS 

1.1 Definitions. As used in this Agreement, the following terms shall have the respective meanings set forth below: 

“Affiliate” has the meaning set forth in the Master Formation Agreement. 

“Agreement” has the meaning set forth in the Preamble. 

“Allocated Value” has the meaning set forth in Section 3.1(e). 

“Assumed Claims” has the meaning set forth in Section 4.5(a). 

“Bronco” has the meaning set forth in the Preamble. 

 “Bronco Entities” means Bronco and its Affiliates; and
“Bronco Entity” means any of the Bronco Entities. 
 “Bronco Fall-Away Date” has
the meaning set forth in the Partnership Agreement. 
 “Bronco Parties” means Bronco Midstream Holdings,
LLC, a Delaware limited liability company, and Bronco Midstream Holdings II, LLC, a Delaware limited liability company. 

“Business Day” means any day on which commercial banks are generally open for business in New York,
New York other than a Saturday, a Sunday or a day observed as a holiday in New York, New York under the Laws of the State of New York or the federal Laws of the United States of America. 

“CEFS” means CenterPoint Energy Field Services, LLC, a Delaware limited liability company. 

“CEFS Group Entities” means CEFS and the entities that are Subsidiaries of CEFS immediately prior to the Closing.

 “CERC” means CenterPoint Energy Resources Corp., a Delaware corporation and wholly owned subsidiary
of CNP. 
 “CERC Indenture” means that certain Indenture, dated as of February 1, 1998, between
CERC and the Bank of New York Mellon Trust Company, N.A. (successor to JPMorgan Chase Bank, National Association (formerly Chase Bank of Texas, National Association)), as trustee, as supplemented and amended. 

“Closing Date” has the meaning set forth in the Master Formation Agreement. 

“Closing” has the meaning set forth in the Master Formation Agreement. 

“CNP” has the meaning set forth in the Preamble. 

“CNP Entities” means CNP and its Subsidiaries; and “CNP Entity” means any of the CNP
Entities. 
 “CNP Guarantees” has the meaning set forth in Section 4.4. 

“CNP Indemnified Taxes” has the meaning set forth in the Master Formation Agreement. 

“CNP Midstream Insurance Policies” has the meaning set forth in the Master Formation Agreement. 

“CNP Midstream Entities” has the meaning set forth in the Master Formation Agreement. 

“Code” has the meaning set forth in the Master Formation Agreement. 

  
 2 

 “Covered Acquisition” has the meaning set forth in
Section 3.1(b)(ii). 
 “Disinterested Directors” means (a) as used in
Section 2.4(e), the members of the board of directors of GP LLC that have been designated by the one of CNP or OGE that is not adverse to Opco in a claim under Article II, and (b) as used in Section 3.1, the members of
the board of directors of GP LLC that have been designated by the one of CNP or OGE that is not the acquiring Sponsor Party in the subject transaction. 
 “Enogex” means Enogex Holdings II LLC, a Delaware limited liability company. 
 “Enogex Assets” means all assets of the Enogex Entities immediately prior to the Closing. 
 “Enogex Entities” has the meaning set forth in the Master Formation Agreement. 
 “Enogex Insurance Policies” has the meaning set forth in the Master Formation Agreement. 
 “Fall Away Covenants” has the meaning set forth in Section 4.1(a). 
 “General Partner LLC Agreement” means the Amended and Restated Limited Liability Company Agreement of CNP OGE GP LLC as it may be amended, supplemented or restated from time to
time. 
 “GP LLC” means CNP OGE GP LLC, a Delaware limited liability company. 

“Group Member” means any member of the Opco Group. 

“Indemnified Party” means the Person entitled to indemnification in accordance with Article II.

 “Indemnifying Party” means the Person from whom indemnification may be required in accordance with
Article II. 
 “Insurance Policies” has the meaning set forth in Section 4.5(a).

 “IPO Closing Date” means the date of consummation of an initial public offering of Opco’s (or
its successor’s) common equity. 
 “Law” has the meaning set forth in the Master Formation
Agreement. 
 “LDCs” has the meaning set forth in paragraph (a) of the definition of
“Midstream Operations.” 
 “Losses” has the meaning set forth in
Section 2.1(a). 
 “Master Formation Agreement” means that Master Formation Agreement dated
as of March 14, 2013 by and among CNP, OGE and the Bronco Parties. 

  
 3 

 “Midstream Operations” means the gathering, compression, treatment,
processing, blending, transportation, storage, isomerization and fractionation of crude oil and natural gas, its associated production water and enhanced recovery materials such as carbon dioxide, and its respective constituents and the following
products: methane, natural gas liquids (Y-grade, ethane, propane, normal butane, isobutane and natural gasoline), condensate, and refined products and distillates (gasoline, refined product blendstocks, olefins, naphtha, aviation fuels, diesel,
heating oil, kerosene, jet fuels, fuel oil, residual fuel oil, heavy oil, bunker fuel, cokes and asphalts), to the extent such activities are located within the United States, but excluding any such operations in connection with: 

 

	 	(a)	the local distribution of natural gas as a public utility for ultimate consumption (“LDCs”); 

 

	 	(b)	retail marketing, supply and delivery of natural gas and propane for direct consumption by end users; 

 

	 	(c)	short-haul intrastate pipelines to serve industrial and commercial facilities that are either included in rate base or paid for by the customer, but in any case not in
excess of 20 miles in length without the approval of Opco, which approval will not be unreasonably withheld, and contracting for storage services to source supplies for marketing operations; 

 

	 	(d)	wholesale sales of natural gas and gas liquids (i.e., ethane, propane and butane) to power generators, utilities and resellers; 

 

	 	(e)	temporary on-site delivery services of compressed or liquefied natural gas to LDC’s, pipelines, or commercial and industrial end-users; 

 

	 	(f)	the manufacture of chemicals, polymers, and fuel products and additives; and 

 

	 	(g)	any retained interest in SESH indirectly held by CNP following the Closing as contemplated by the Master Formation Agreement. 

“OGE” has the meaning set forth in the Preamble. 

“OGE/Bronco Group Indemnified Taxes” has the meaning set forth in the Master Formation Agreement. 

“OGE Entities” means OGE and its Subsidiaries; and “OGE Entity” means any of the OGE
Entities. 
 “Opco” has the meaning set forth in the Preamble, and if the IPO Closing Date occurs, means
the publicly traded Delaware limited partnership that Opco shall become as of the IPO Closing Date. 
 “Opco
Group” means Opco and any Subsidiary of Opco, taken together. 

  
 4 

 “Partnership Agreement” means the First Amended and Restated
Agreement of Limited Partnership of Opco, as it may be further amended, supplemented or restated from time to time. 

“Party” and “Parties” has the meaning set forth in the Preamble. 

“Person” has the meaning set forth in the Master Formation Agreement. 

“Restricted Business” has the meaning set forth in Section 3.1(a). 

“SESH” has the meaning set forth in the Master Formation Agreement. 

“Sponsor Parties” means, collectively, CNP and OGE; and “Sponsor Party” means either of
CNP or OGE. 
 “Subject Marks” has the meaning set forth in Section 4.3. 

“Subsidiary” or “Subsidiaries”, except as indicated in Section 4.1(b),
has the meaning set forth in the Master Formation Agreement. 
 1.2 Rules of Construction. 

(a) The division of this Agreement into articles, sections and other portions and the insertion of headings are for convenience of
reference only and shall not affect the construction or interpretation hereof. Unless otherwise indicated, all references to an “Article” or “Section” followed by a number or a letter refer to the specified Article or
Section of this Agreement. The terms “this Agreement,” “hereof,” “herein” and “hereunder” and similar expressions refer to this Agreement and not to any particular Article, Section or other portion hereof.

 (b) Unless otherwise specifically indicated or the context otherwise requires, (i) all references to “dollars”
or “$” mean United States dollars, (ii) words importing the singular shall include the plural and vice versa, and words importing any gender shall include all genders and (iii) “include,” “includes” and
“including” shall be deemed to be followed by the words “without limitation.” If any date on which any action is required to be taken hereunder by any of the Parties hereto is not a Business Day, such action shall be required to
be taken on the next succeeding day that is a Business Day. Reference to any Party hereto is also a reference to such Party’s permitted successors and assigns. 
 ARTICLE II 
 INDEMNIFICATION 

2.1 CNP Indemnification. 
 (a) Subject to the provisions of this Section 2.1 and Section 2.4, CNP shall indemnify, defend and hold harmless Opco from and against any losses, damages, liabilities, claims,
demands, causes of action, judgments, settlements, fines, penalties, costs and expenses (including, without limitation, court costs and reasonable attorney’s and expert’s fees) of any and every kind or character, known or unknown, fixed or
contingent (collectively “Losses”) suffered or incurred by the Opco Group by reason of or arising out of: 

  
 5 

 (i) the failure of the representations and warranties of CNP in Section 3.2
(Authority) of the Master Formation Agreement to be true as of the Closing Date; 
 (ii) the failure of the representations and
warranties of CNP in Section 3.3 (Capitalization) of the Master Formation Agreement to be true as of the Closing Date (except for such representations and warranties made as of a specific date, which shall be true and correct as of such
specific date); 
 (iii) the failure of the representations and warranties of CNP in Section 3.7(b) (Permits) of the Master
Formation Agreement to be true as of the Closing Date; 
 (iv) the failure of the representations and warranties of CNP in
Section 3.10 (Environmental Matters) of the Master Formation Agreement to be true as of the Closing Date; 
 (v) the
failure of the representations and warranties of CNP in Section 3.11 (Title to Properties and Rights of Way) of the Master Formation Agreement to be true as of the Closing Date; 

(vi) the failure of the representations and warranties of CNP in Section 3.14(b) (Tax Matters) of the Master Formation Agreement to
be true as of the Closing Date; 
 (vii) all CNP Indemnified Taxes pursuant to Section 8.1 of the Master Formation
Agreement; or 
 (viii) events and conditions associated with the ownership and operation of the business and assets of the CNP
Entities (excluding the CEFS Group Entities) whether occurring prior to or after the Closing. 
 (b) No claim may be made
against CNP for indemnification pursuant to Section 2.1(iii), (iv) or (v) unless the aggregate dollar amount of the Losses suffered or incurred by the Opco Group with respect to such claim exceeds $25 million, and
after such time CNP shall be liable only for such Losses in excess of such amount. 
 (c) In no event shall CNP’s aggregate
obligation to indemnify Opco pursuant to Section 2.1(iii), (iv) and (v) exceed $250 million. 

(d) CNP shall have no indemnification obligations (i) pursuant to Section 2.1(iii) with respect to a claim unless CNP
receives notice of the claim, in compliance with Section 2.4(a), from the Opco Group during the period beginning on the date hereof and ending on the first anniversary of the Closing Date; (ii) pursuant to
Section 2.1(a)(iv) or (v) with respect to a claim unless CNP receives notice of the claim, in compliance with Section 2.4(a), from the Opco Group during the period beginning on the date hereof and ending on the
third anniversary of the Closing Date; and (iii) pursuant to Section 2.1(a)(vi) or (vii) with respect to a claim unless CNP receives notice of the claim, in compliance with Section 2.4(a) from the Opco Group
during the period beginning on the date hereof and ending on the 30th day after the expiration of the applicable statute of limitations (including any extensions thereof). 

  
 6 

 2.2 OGE Indemnification. 

(a) Subject to the provisions of this Section 2.2 and Section 2.4, OGE shall indemnify, defend and hold harmless
Opco from and against any Losses suffered or incurred by the Opco Group by reason of or arising out of: 
 (i) the failure of
the representations and warranties of OGE in Section 4.2 (Authority) of the Master Formation Agreement to be true as of the Closing Date; 
 (ii) the failure of the representations and warranties of OGE in Section 4.3 (Capitalization) of the Master Formation Agreement to be true as of the Closing Date (except for such representations and
warranties made as of a specific date, which shall be true and correct as of such specific date); 
 (iii) the failure of the
representations and warranties of OGE in Section 4.7(b) (Permits) of the Master Formation Agreement to be true as of the Closing Date; 
 (iv) the failure of the representations and warranties of OGE in Section 4.10 (Environmental Matters) of the Master Formation Agreement to be true as of the Closing Date; 

(v) the failure of the representations and warranties of OGE in Section 4.11 (Title to Properties and Rights of Way) of the Master
Formation Agreement to be true as of the Closing Date; 
 (vi) the failure of the representations and warranties of OGE in
Section 4.14(b) (Tax Matters) of the Master Formation Agreement to be true as of the Closing Date; 
 (vii) OGE’s pro
rata share of all OGE/Bronco Group Indemnified Taxes pursuant to Section 8.2 of the Master Formation Agreement; or 

(viii) events and conditions associated with the ownership and operation of the business and assets of the OGE Entities (excluding the
Enogex Entities) whether occurring prior to or after the Closing. 
 (b) No claim may be made against OGE for indemnification
pursuant to Section 2.2(iii), (iv) or (v) unless the aggregate dollar amount of the Losses suffered or incurred by the Opco Group with respect to such claim exceeds $25 million, and after such time OGE shall be
liable only for such Losses in excess of such amount. 
 (c) In no event shall OGE’s aggregate obligation to indemnify Opco
pursuant to Section 2.2(iii), (iv) and (v) exceed $250 million. 
 (d) OGE and Bronco shall
be severally liable (pro rata in proportion to their membership interests in Enogex immediately prior to the Closing, and only to the extent of such proportional interest) for all Losses that give rise to an indemnification obligation of OGE under
Section 2.2(a)(vii) and Bronco under Section 2.3(a)(iii). 

  
 7 

 (e) OGE shall have no indemnification obligations (i) pursuant to
Section 2.2(iii) with respect to a claim unless OGE receives notice of the claim, in compliance with Section 2.4(a), from the Opco Group during the period beginning on the date hereof and ending on the first anniversary of
the Closing Date; (ii) pursuant to Section 2.2(a)(iv) or (v) with respect to a claim unless OGE receives notice of the claim, in compliance with Section 2.4(a), from the Opco Group during the period beginning
on the date hereof and ending on the third anniversary of the Closing Date; and (iii) pursuant to Section 2.2(a)(vi) or (vii) with respect to a claim unless OGE receives notice of the claim, in compliance with
Section 2.4(a) from the Opco Group during the period beginning on the date hereof and ending on the 30th day after the expiration of the applicable statute of limitations (including all extensions thereof). 

2.3 Bronco Indemnification. 
 (a) Subject to the provisions of this Section 2.3 and Section 2.4, Bronco shall indemnify, defend and hold harmless Opco from and against any Losses suffered or incurred by the
Opco Group by reason of or arising out of: 
 (i) the failure of the representations and warranties of the Bronco Parties in
Section 5.2 (Authority) of the Master Formation Agreement to be true as of the Closing Date; 
 (ii) the failure of the
representations and warranties of the Bronco Parties in Section 5.3 (Capitalization) of the Master Formation Agreement to be true as of the Closing Date (except for such representations and warranties made as of a specific date, which shall be
true and correct as of such specific date); 
 (iii) the Bronco Parties’ pro rata share of all OGE/Bronco Group Indemnified
Taxes pursuant to Section 8.2 of the Master Formation Agreement; or 
 (iv) events and conditions associated with the
ownership and operation of the business and assets of the Bronco Entities (excluding the Enogex Entities) whether occurring prior to or after the Closing. 
 (b) OGE and Bronco shall be severally liable (pro rata in proportion to their membership interests in Enogex immediately prior to the Closing, and only to the extent of such proportional interest) for all
Losses that give rise to an indemnification obligation of OGE under Section 2.2(a)(vii) and Bronco under Section 2.3(a)(iii). 
 (c) Bronco shall have no indemnification obligations pursuant to Section 2.3(a)(iii) with respect to a claim unless Bronco receives notice of the claim, in compliance with
Section 2.4(a) from the Opco Group during the period beginning on the date hereof and ending on the 30th day after the expiration of the applicable statute of limitations (including all extensions thereof). 

2.4 Indemnification Procedures. 
 (a) Opco agrees that promptly after it becomes aware of facts giving rise to a claim for indemnification under this Article II, it will provide notice thereof in writing to the applicable
Indemnifying Party, specifying the nature of and specific basis for such claim; provided, 

  
 8 

 
however, that in the event GP LLC elects not to cause Opco to pursue a claim for indemnification that Opco is entitled to pursue under this Article II that could result in the
payment of any amount by the Indemnifying Party, Bronco shall have the right to cause GP LLC to cause Opco to pursue such claim by delivering written notice of Bronco’s election to GP LLC until the Bronco Fall-Away Date. Promptly following the
receipt by GP LLC of Bronco’s written election pursuant to the foregoing proviso, Opco will provide notice thereof in writing to the applicable Indemnifying Party, specifying the nature of and specific basis for such claim, and GP LLC shall
thereafter cause Opco to diligently pursue such claim in accordance with this Section 2.4. If Opco fails to provide such notice to the Indemnifying Party within ten (10) Business Days or if Opco fails to diligently pursue such claim
in accordance with this Section 2.4, then Bronco may notify the Indemnifying Party of such claim directly and may control the pursuit of such claim against the Indemnified Party on behalf of Opco. Both CNP and OGE agree to cause their
designated members of the board of directors of GP LLC to approve the actions reasonably requested by Bronco with respect to any such claim. 
 (b) The Indemnifying Party (or Indemnifying Parties) shall have the right to control at its sole cost and expense all aspects of the defense of (and any counterclaims with respect to) any claims brought
against the Indemnified Party that are covered by the indemnification under this Article II, including, without limitation, the selection of counsel, determination of whether to appeal any decision of any court and the settling of any
such matter or any issues relating thereto; provided, however, that no such settlement shall be entered into without the prior written consent of the Indemnified Party unless it includes a full release of the Indemnified Party from such
matter or issues, as the case may be. 
 (c) The Indemnified Party agrees to cooperate fully with each Indemnifying Party, with
respect to all aspects of the defense of any claims covered by the indemnification under this Article II, including, without limitation, the prompt furnishing to each Indemnifying Party of any correspondence or other notice relating
thereto that the Indemnified Party may receive, permitting the name of the Indemnified Party to be utilized in connection with such defense, the making available to each Indemnifying Party of any files, records or other information of the
Indemnified Party that any Indemnifying Party reasonably considers relevant to such defense, the granting to the Indemnifying Party of reasonable access rights to the properties and facilities of the Indemnified Party and the making available to
each Indemnifying Party of any employees of the Indemnified Party; provided, however, that in connection therewith each Indemnifying Party agrees to use reasonable efforts to minimize the impact thereof on the operations of the
Indemnified Party and further agrees to maintain the confidentiality of all files, records, and other information furnished by the Indemnified Party pursuant to this Section 2.4. In no event shall the obligation of the Indemnified Party
to cooperate with each Indemnifying Party as set forth in the immediately preceding sentence be construed as imposing upon the Indemnified Party an obligation to hire and pay for counsel in connection with the defense of any claims covered by the
indemnification set forth in this Article II; provided, however, that the Indemnified Party may, at its own option, cost and expense, hire and pay for counsel in connection with any such defense. The Indemnifying Party
agrees to keep any such counsel hired by the Indemnified Party informed as to the status of any such defense, but the Indemnifying Party shall have the right to retain sole control over such defense. 

  
 9 

 (d) In determining the amount of any Losses for which the Indemnified Party is entitled to
indemnification under this Agreement, the gross amount of the indemnification will be reduced by (i) any cash insurance proceeds realized by the Indemnified Party, and such correlative insurance benefit shall be net of any incremental insurance
premiums that become due and payable by the Indemnified Party as a result of such claim and (ii) all cash amounts recovered by the Indemnified Party under contractual indemnities from third Persons. 

(e) To the extent that any indemnification claim under this Article II involves a claim where Opco, on the one hand, and either CNP or
OGE, on the other hand, are adverse, Opco’s rights and obligations shall be controlled by the Disinterested Directors. Both CNP and OGE agree to cause their designated members of the board of directors of GP LLC who are not Disinterested
Directors to approve the actions of the Disinterested Directors with respect to any such claim. 
 2.5 Exclusive Remedy.
The indemnification provisions of this Article II will be the exclusive remedy following the Closing for any breaches or alleged breaches of any representation, warranty or covenant of the Master Formation Agreement, except with respect
to claims or causes of action arising from breaches or alleged breaches of Sections 6.2(b), 6.2(c), 6.5(c), 6.7(a)(ii), 6.7(b)(ii), 6.8, 6.13, 6.14, 6.15, 6.18 and 9.3 and Article X of the Master Formation Agreement or from fraud or willful
misconduct. Each of the Parties, on behalf of itself and its members, officers, directors, employees, stockholders, equityholders, partners and Affiliates, agrees not to bring any actions or proceedings, at law, equity or otherwise against any other
Party or its members, officers, directors, employees, shareholders, partners and Affiliates, in respect of any breaches or alleged breaches of any representation, warranty or covenant of the Master Formation Agreement or the transactions
contemplated thereby, except pursuant to the express provisions of this Article II and except with respect to claims or causes of action arising from fraud or willful misconduct. 

2.6 Other Indemnification Matters. 
 (a) For the avoidance of doubt, except as expressly set forth in this Article II, there is no monetary cap on the amount of indemnity coverage provided by any Indemnifying Party under this
Article II. 
 (b) NOTWITHSTANDING ANYTHING HEREIN TO THE CONTRARY, IN NO EVENT SHALL ANY PARTY’S INDEMNIFICATION
OBLIGATION HEREUNDER COVER OR INCLUDE CONSEQUENTIAL, INDIRECT, INCIDENTAL, PUNITIVE, EXEMPLARY, SPECIAL OR SIMILAR DAMAGES OR LOST PROFITS SUFFERED BY ANY OTHER PARTY ENTITLED TO INDEMNIFICATION UNDER THIS AGREEMENT. 

(c) THE FOREGOING INDEMNITIES ARE INTENDED TO BE ENFORCEABLE AGAINST THE PARTIES IN ACCORDANCE WITH THE EXPRESS TERMS AND SCOPE THEREOF
NOTWITHSTANDING ANY EXPRESS NEGLIGENCE RULE OR ANY SIMILAR DIRECTIVE THAT WOULD PROHIBIT OR OTHERWISE LIMIT INDEMNITIES BECAUSE OF THE SOLE, CONCURRENT, ACTIVE OR PASSIVE NEGLIGENCE, STRICT LIABILITY OR FAULT OF ANY OF THE INDEMNIFIED PARTIES.

  
 10 

 ARTICLE III 
 EXCLUSIVITY 
 3.1 Sponsor Party Obligations. 

(a) Except as permitted by Section 3.1(b), for so long as either Sponsor Party holds (i) any interest in the general
partner of Opco, or (ii) at least 20% of the aggregate number of outstanding common and subordinated units of Opco, except with the written consent of the other Sponsor Party, each Sponsor Party shall be prohibited from, directly or indirectly,
owning, operating, acquiring, or investing in any business engaged, wholly or partly, in Midstream Operations (a “Restricted Business”), other than through Opco. 

(b) Notwithstanding any provision of Section 3.1(a) to the contrary, either Sponsor Party may, without the consent of the other
Sponsor Party, acquire a Restricted Business subject to the following restrictions: 
 (i) if the acquiring Sponsor Party
intends to cease using the assets of the Restricted Business in Midstream Operations within 12 months of the acquisition of such Restricted Business, the acquiring Sponsor Party shall promptly following completion of such acquisition deliver written
notice to Opco of such event and of such intention; or 
 (ii) if the Restricted Business acquired has an Allocated Value (a
“Covered Acquisition”) (A) in excess of $50 million or (B) in excess of $100 million in the aggregate with the acquiring Sponsor Party’s other Restricted Businesses, then (1) the acquiring Sponsor Party
shall promptly following completion of such acquisition deliver written notice to Opco of such event, and (2) Opco may elect (subject to any applicable approvals for a Related Party Transaction (as defined in the General Partner LLC
Agreement)), within 60 days of receipt of such notice, to purchase all of such Restricted Businesses for a price equal to the Allocated Value and on other terms and conditions reasonably similar to the terms and conditions on which the acquiring
Sponsor Party purchased such Restricted Businesses, by delivering written notice of such election to such Sponsor Party. In the event Opco timely elects to acquire such Restricted Businesses from such Sponsor Party, the Parties shall take such
actions as are reasonably necessary to complete the sale of such Restricted Businesses to Opco promptly. In the event Opco does not so elect, such Sponsor Party shall be permitted to own and operate such Restricted Businesses and such Restricted
Businesses shall not be included in the calculation of the aggregate value of such Sponsor Party’s Restricted Businesses for purposes of clause (B) above; provided, however, that if the fair market value of the Midstream
Operations included in the Restricted Business in a Covered Acquisition (as determined in good faith by the Board of Directors of the acquiring Sponsor Party) is greater than 66 2/3% of the fair market value of the Covered Acquisition (as determined
in good faith by the Board of Directors of the acquiring Sponsor Party), then the acquiring Sponsor Party shall use commercially reasonable efforts to dispose of the Restricted Business within 24 months of the date on which Opco’s option to
purchase pursuant to this Section 3.1(b) expired. 
 (c) Except as set forth in this Section 3.1, no
Party shall have any right to seek to enjoin, restrict or prevent any transaction undertaken by a Sponsor Party due to the fact such transaction involves Midstream Operations. 

  
 11 

 (d) The Sponsor Party obligations set forth in this Section 3.1 shall not
restrict or otherwise encumber any Person that acquires a Sponsor Party or such acquiror’s Subsidiaries (other than the Sponsor Party and its Subsidiaries). 
 (e) For purposes of this Section 3.1, “Allocated Value” shall mean (i) with respect to any transaction in which there is a bona fide value specifically allocated
to the Restricted Business, the value so allocated in such transaction, or (ii) with respect to any transaction in which there is no such allocation of value to the Restricted Business, (A) the value agreed between the acquiring Sponsor
Party and Opco (subject to any applicable approvals for a Related Party Transaction) or (B) if there is no agreement on value, then the acquiring Sponsor Party and Opco shall submit the determination of the “Allocated Value” to
arbitration by a mutually agreed nationally recognized investment bank which shall determine such matter (the arbitration shall be “baseball” arbitration, with each party submitting a proposed resolution of the “Allocated Value”
and the arbitrator selecting the proposal of one of the parties). 
 (f) Opco’s rights and obligations under this
Section 3.1 shall be controlled by the Disinterested Directors. Both CNP and OGE agree to cause their designated members of the board of directors of GP LLC who are not Disinterested Directors to approve the actions of the Disinterested
Directors with respect to any such transaction. 
 ARTICLE IV 

ADDITIONAL AGREEMENTS 
 4.1 CERC Indenture. 
 (a) Until the earlier of (i) January 15,
2014 and (ii) the date CERC’s 5.95% Senior Notes due 2014 and 7.875% Senior Notes due 2013 are no longer outstanding, Opco shall, and shall cause its Subsidiaries to, comply with the Restrictions on Liens and Restrictions on Sale and
Leaseback Transaction covenants (the “Fall Away Covenants”) in the CERC Indenture. 
 (b) For so long as
Opco is a “subsidiary” (as defined in the CERC Indenture) of CERC, Opco shall, and shall cause its Subsidiaries to, subject to Section 4.1(a), comply with the restrictions contained in the CERC Indenture as of the date hereof
and applicable to a “subsidiary” (as defined in the CERC Indenture) of CERC, other than the Fall Away Covenants. 

4.2 Confidentiality Obligations of Bronco. Bronco acknowledges that, from time to time, it may receive information (including by
virtue of the observation rights granted to Bronco in Section 3.4 of the Partnership Agreement) from or regarding another Party, another Party’s customers or another Party’s Affiliates in the nature of trade secrets or secret or
proprietary information or information that is otherwise confidential, the release of which may be damaging to the Party or its Affiliates, as applicable, or Persons with which they do business (such information referred to herein as
“Confidential Information”). Notwithstanding the foregoing, “Confidential Information” shall not include (x) information that Bronco has received from a source independent of such Party and that Bronco
reasonably believes such source obtained without breach of any obligation of confidentiality, (y) public information or (z) information that is independently developed by Bronco or its Affiliates without reliance on the Confidential
Information. Bronco shall hold in strict confidence any Confidential Information it receives and 

  
 12 

 
may not disclose any Confidential Information to any Person other than another Party, except for disclosures (i) to comply with any Laws (including applicable stock exchange or quotation
system requirements), (ii) to Bronco and its Affiliates, and its and their respective officers, directors, employees, agents, advisers or representatives, but only if the recipients of such information have agreed to be bound by confidentiality
provisions that are no less stringent than those set forth in this Section 4.2, (iii) to existing and prospective lenders, existing and prospective investors, attorneys, accountants, consultants and other representatives of Bronco
or its Affiliates with a need to know such information (including a need to know for Bronco’s own purposes), provided, however, that Bronco shall be responsible for such representatives’ use and disclosure of any such information,
or (iv) in connection with any proposed “transfer” (as defined in the Partnership Agreement) of Bronco’s “Units” (as defined in the Partnership Agreement), to Persons to which such interest may be transferred as
permitted by the Partnership Agreement, but only if the recipients of such information have agreed in writing to be bound by confidentiality provisions that are no less stringent than those set forth in this Section 4.2. Bronco shall not
use any Confidential Information, and shall restrict any of its Affiliates, officers, directors, employees, agents, advisers or representatives to whom Confidential Information has been disclosed pursuant to this Section 4.2 from using
any such Confidential Information, for the benefit of any Person (other than a Group Member) in which Bronco or an Affiliate of Bronco has an economic interest in any manner that could have a material detriment on any Group Member. The
obligations set forth in the preceding sentence shall expire on the date that is two (2) years after the Bronco Fall-Away Date; provided, that if, prior to the Bronco Fall-Away Date, Opco notifies Bronco that specified Confidential Information
is subject to a contractual obligation of Opco to cause Persons that receive such Confidential Information not to use such Confidential Information in the manner set forth in the preceding sentence for a longer period, then the obligations of Bronco
in the preceding sentence shall remain in effect with respect to such specified Confidential Information until the expiration of such longer period. 
 4.3 Use of Names and Insignia. Except as set forth in this Section 4.3, Opco agrees that from and after the Closing Date, none of Opco or its Subsidiaries will directly or indirectly
use or otherwise exploit, in connection with any business activities, any service marks, trademarks, trade names, trade dress, Internet domain names, identifying symbols, logos, emblems, signs or insignia related thereto or containing or comprising
the foregoing, including any word or logo confusingly similar thereto, containing the words “CenterPoint Energy,” “OGE” or “Enogex” or any abbreviations or derivations thereof (the “Subject
Marks”). As soon as is reasonably practicable following the selection of a new name by Opco, but in any event within one year following the Closing Date, Opco and its Subsidiaries will cease to use the Subject Marks and use commercially
reasonable efforts to remove the Subject Marks from all entity names and assets of Opco and its Subsidiaries. 
 4.4
Replacement of CNP Guarantees. Exhibit A hereto lists certain guarantees (the “CNP Guarantees”) issued by CNP or CERC for the benefit of a member of the Opco Group as of the Closing Date. Opco and CNP shall use
commercially reasonable efforts and cooperate with each other to terminate, or cause to be terminated, the CNP Guarantees and release, or cause to be released, CNP, CERC or their applicable affiliate from the CNP Guarantees, including by causing a
member of the Opco Group to enter into a substitute guarantee for each CNP Guarantee or to assume the CNP Guarantees, in each case within 180 days following the Closing Date; provided, however, that nothing in this
Section 4.4 shall obligate any Group Member to provide any form of security other than a guarantee, including any letter of credit, cash collateral or security interest in any asset. 

  
 13 

 4.5 Insurance. 

(a) At Opco’s request, each of CNP and OGE agrees to use commercially reasonable efforts to assert and diligently pursue all rights
to insurance coverage under the CNP Midstream Insurance Policies and Enogex Insurance Policies and any other past insurance policies of each of CNP and OGE relating to the business or the assets of the CNP Midstream Entities or the Enogex Entities
(such insurance policies collectively referred to herein as the “Insurance Policies”) with respect to insured claims asserted prior to the Closing and any such claims asserted following the Closing that are covered under an
applicable Insurance Policy (collectively, the “Assumed Claims”). Each of CNP and OGE shall remit to Opco all insurance proceeds obtained after Closing with respect to the Assumed Claims. Furthermore, each of CNP and OGE
agrees to use commercially reasonable efforts to negotiate with each of its respective insurance companies in order to provide Opco the benefit of the coverage under the policies for all claims asserted on or after the Closing Date and to cooperate
with Opco with any efforts to obtain “tail” coverage, at Opco’s sole cost, with respect to any “claims made policies.” Notwithstanding anything herein to the contrary, (i) any recovery of insurance proceeds by Opco
shall be net of all cost and expenses of CNP and OGE, respectively, and (ii) any deductibles or self-insured retentions paid by CNP or OGE under applicable Insurance Policies that are recovered by an insurer (whether under any right of
subrogation or otherwise) shall be for the benefit of CNP, OGE or their respective Affiliates, to the extent such party paid such deductible or self-insured retention, and shall not be retained by Opco. Each of CNP and OGE shall give Opco access to
all of the non-privileged information relating to these matters and shall consult with Opco on the progress thereof from time to time. 
 (b) After the Closing, Opco shall be responsible for, and neither CNP, OGE nor any of their respective Affiliates shall have any responsibility for, the payment of any deductible amounts or underlying
limits attributable to the Insurance Policies to the extent related to the Assumed Claims. Opco acknowledges that certain of the Insurance Policies may require CNP or OGE or any of their respective Affiliates to provide an indemnity to the insurance
carrier for deductible amounts and to provide collateral to secure such indemnity obligations. Opco shall enter into an indemnification agreement in form mutually acceptable to Opco, CNP and OGE wherein Opco agrees to indemnify and hold harmless
each of CNP and OGE or any of their respective Affiliates (as applicable) for any and all of the costs of maintaining such collateral and for any charges made against such collateral or indemnification payments in connection with claims arising or
alleged to arise from the operations of the business of the CNP Midstream Entities or the Enogex Entities required to be paid by CNP or OGE of any of their respective Affiliates (as applicable) under or with respect to such Insurance Policies from
and after the Closing Date. 
 (c) Neither CNP nor OGE makes any representation or warranty with respect to the applicability,
validity or adequacy of any Insurance Policies, and neither CNP nor OGE shall be responsible to Opco or any member of the Opco Group for the failure of any insurer to pay under such Insurance Policy. 

  
 14 

 (d) Nothing in this Agreement is intended to provide or shall be construed as providing a
benefit or release to any insurer or claims service organization of any obligation under any Insurance Policy. Nothing herein shall be construed as creating or permitting any insurer or claims service organization the right of subrogation against
CNP, OGE, Opco or any of their respective Affiliates in respect of payments made by one to the other under any Insurance Policy. 

ARTICLE V 

MISCELLANEOUS 
 5.1 Governing Law; Jurisdiction; Waiver of Jury Trial. To the maximum extent permitted by applicable Law, the provisions of this Agreement shall be governed by and construed and enforced in
accordance with the Laws of the State of Delaware, without regard to principles of conflict of laws. Each of the Parties hereto agrees that this Agreement involves at least $100,000 and that this Agreement has been entered into in express reliance
upon 6 Del. C. § 2708. Each of the Parties hereto irrevocably and unconditionally confirms and agrees (a) that it is and shall continue to be subject to the jurisdiction of the courts of the State of Delaware and of the federal courts
sitting in the State of Delaware and (b)(i) to the extent that such Party is not otherwise subject to service of process in the State of Delaware, to appoint and maintain an agent in the State of Delaware as such Party’s agent for acceptance of
legal process and notify the other Parties hereto of the name and address of such agent and (ii) to the fullest extent permitted by Law, that service of process may also be made on such Party by prepaid certified mail with a proof of mailing
receipt validated by the U.S. Postal Service constituting evidence of valid service, and that, to the fullest extent permitted by applicable Law, service made pursuant to (b)(i) or (ii) above shall have the same legal force and effect as if
served upon such Party personally within the State of Delaware. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, EACH PARTY HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY (A) CONSENTS AND SUBMITS TO THE EXCLUSIVE JURISDICTION OF ANY FEDERAL OR
STATE COURT LOCATED IN THE STATE OF DELAWARE, INCLUDING THE DELAWARE COURT OF CHANCERY IN AND FOR NEW CASTLE COUNTY (THE “DELAWARE COURTS”) FOR ANY ACTIONS, SUITS OR PROCEEDINGS ARISING OUT OF OR RELATING TO THIS AGREEMENT OR
THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT (AND AGREES NOT TO COMMENCE ANY LITIGATION RELATING THERETO EXCEPT IN SUCH COURTS), (B) WAIVES ANY OBJECTION TO THE LAYING OF VENUE OF ANY SUCH LITIGATION IN THE DELAWARE COURTS AND AGREES NOT TO
PLEAD OR CLAIM IN ANY DELAWARE COURT THAT SUCH LITIGATION BROUGHT THEREIN HAS BEEN BROUGHT IN ANY INCONVENIENT FORUM AND (C) ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY THAT MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND
DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. 

  
 15 

 5.2 Notice. Any notice, request, instruction, correspondence or other document to be
given hereunder by any Party to another Party (each, a “Notice”) shall be in writing and delivered in person or by courier service requiring acknowledgment of receipt of delivery or mailed by U.S. registered or certified
mail, postage prepaid and return receipt requested, or by telecopier, as follows, provided that copies to be delivered below shall not be required for effective notice and shall not constitute notice: 

If to CNP or the CNP Entities: 
 CenterPoint Energy, Inc. 
 1111 Louisiana Street 

Houston, TX 77002 
 Attention: Chief Financial Officer 
 Fax: 713.207.9680 

with a copy to:

Baker Botts L.L.P. 
 910 Louisiana Street 
 Houston, TX 77002 

Attention: David Kirkland 
     Gerald M. Spedale 
 Fax: 713.229.1522 

If to OGE or the OGE Entities: 
 OGE Enogex Holdings LLC 
 321 North Harvey 

P.O. Box 321 

Oklahoma City, Oklahoma 73101-0321 
 Attention: Sean Trauschke 
 Fax: 405.553.3760 

with a copy to: 
 Jones Day 
 717 Texas Avenue, Suite 3300 

Houston, Texas 77002 
 Attention: James E. Vallee 
 Telecopy: (832) 239-3600 

If to Bronco or the Bronco Entities: 
 Enogex Holdings LLC 
 c/o ArcLight Capital Partners, LLC 

200 Clarendon Street, 55th Floor 
 Boston, Massachusetts 02117 
 Attention: Christine M. Miller 

Telecopy: (617) 867-4698 

  
 16 

 with a copy to:
 McDermott Will & Emery LLP 
 1000 Louisiana Street, Suite 3900

 Houston, Texas 77002 
 Attention: Blake H. Winburne 
 Telecopy: (713) 583-0889 

If to Opco or the Opco Group: 
 CenterPoint Energy, Inc. 
 1111 Louisiana Street 

Houston, Texas 77002 
 Attention: Chief Financial Officer 
 Fax: (713)-207-9680 

with a copy to: 
 Baker Botts L.L.P. 
 910 Louisiana Street 

Houston, Texas 77002 
 Attention: David Kirkland 

                 Gerald M. Spedale 

Fax: (713) 229-1522 
 and 
 OGE Enogex Holdings LLC 

321 North Harvey 
 P.O. Box 321 
 Oklahoma City, Oklahoma 73101-0321 

Attention: Sean Trauschke 
 Fax: (405) 553-3760 
 with a copy to: 

Jones Day 

717 Texas Avenue, Suite 3300 
 Houston, Texas 77002 
 Attention: James E. Vallee 

Fax: (832) 239-3600 
 5.3 Entire Agreement. This Agreement constitutes the entire agreement of the Parties relating to the matters contained herein, superseding all prior contracts or agreements, whether oral or
written, relating to the matters contained herein. 

  
 17 

 5.4 Amendment or Modification. This Agreement may be amended or modified from time
to time only by the written agreement of all the Parties hereto. Each such instrument shall be reduced to writing. 
 5.5
Assignment. No Party shall have the right to assign any of its rights or obligations under this Agreement without the consent of the other Parties hereto; provided, however, that Bronco may assign all of its rights and
obligations under this Agreement to a Bronco Successor (as defined in the Partnership Agreement) that is not a Midstream Successor (as defined in the Partnership Agreement) and upon such assignment, Bronco shall no longer be entitled to exercise any
of such rights and obligations under this Agreement; provided further that any assignment by Bronco to a Bronco Successor shall not relieve Bronco of its obligations under Section 4.2 of this Agreement. 

5.6 Counterparts. This Agreement may be executed in any number of counterparts with the same effect as if all signatory parties
had signed the same document. All counterparts shall be construed together and shall constitute one and the same instrument. 

5.7 Severability. If any provision of this Agreement shall be held invalid or unenforceable by a court or regulatory body of
competent jurisdiction, the remainder of this Agreement shall remain in full force and effect. 
 5.8 Further Assurances.
In connection with this Agreement and all transactions contemplated by this Agreement, each signatory party hereto agrees to execute and deliver such additional documents and instruments and to perform such additional acts as may be necessary or
appropriate to effectuate, carry out and perform all of the terms, provisions and conditions of this Agreement and all such transactions. 
 5.9 Specific Performance. Damages in the event of breach of this Agreement by a Party may be difficult, if not impossible, to ascertain, and it is therefore agreed that each such Party, in addition
to and without limiting any other remedy or right it may have, will have the right to an injunction or other equitable relief in any court of competent jurisdiction, enjoining any such breach, and enforcing specifically the terms and provisions
hereof, and each of the Parties hereby waives any and all defenses it may have on the ground of lack of jurisdiction or competence of the court to grant such an injunction or other equitable relief. The existence of this right will not preclude any
such Party from pursuing any other rights and remedies at law or in equity which such Party may have. 
 5.10 Enforcement;
Rights of Limited Partners after IPO Closing Date. The provisions of this Agreement are enforceable solely by the Parties to this Agreement; provided, however, that (a) the provisions of Section 3.1 are enforceable only
by the Sponsor Parties and (b) if the IPO Closing Date occurs, no limited partner of Opco shall have the right, separate and apart from Opco, to enforce any provision of this Agreement or to compel any Party to this Agreement to comply with the
terms of this Agreement. 
 5.11 Successors. This Agreement shall bind and inure to the benefit of the Parties and to
their respective successors and assigns. 

  
 18 

 [Remainder of page intentionally left blank] 

  
 19 

 IN WITNESS WHEREOF, the Parties have executed this Agreement on, and effective as
of, the date first written above. 
  

			
	 CENTERPOINT ENERGY, INC.

		
	       By:
	 	 /s/ Gary L. Whitlock

		 	Gary L. Whitlock
		 	 Executive Vice President and

Chief Financial Officer

	
	 OGE ENERGY CORP.

		
	       By:
	 	 /s/ Sean Trauschke

		 	Sean Trauschke
		 	Vice President and Chief Financial Officer
	
	 ENOGEX HOLDINGS LLC

		
	       By:
	 	 /s/ Robb E. Turner

		 	Robb E. Turner
		 	Vice President
	
	 CENTERPOINT ENERGY FIELD SERVICES LP

 
 By: CNP OGE GP LLC, its general
partner

		
	       By:
	 	 /s/ David M. McClanahan

		 	David M. McClanahan
		 	Interim Chairman

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00216-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00216-of-00352.parquet"}]]