Document:

EX-10.5

 Exhibit 10.5 

EQUITY CONTRIBUTION AGREEMENT 

BY AND BETWEEN 
 RATTLER
MIDSTREAM LP 
 AND 

RATTLER MIDSTREAM OPERATING LLC 

 EQUITY CONTRIBUTION AGREEMENT 

This Equity Contribution Agreement (this “Agreement”), dated as of May 28, 2019, is entered into by and between
Rattler Midstream LP, a Delaware limited partnership (the “Partnership”), and Rattler Midstream Operating LLC, a Delaware limited liability company (the “Rattler LLC”). 

RECITALS 
 WHEREAS, in
connection with the proposed initial public offering of common units of the Partnership (the “IPO”), the Partnership intends to use $631,750,000 of the net proceeds from the IPO to make a capital contribution to Rattler LLC
in exchange for 38,000,000 units of Rattler LLC (the “Rattler LLC Units”) upon the terms and conditions set forth herein; 

NOW, THEREFORE, in consideration of the representations, warranties, covenants and agreements contained in this Agreement and other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound hereby, the parties hereto hereby agree as follows: 

ARTICLE I. 
 DEFINITIONS

 Section 1.01    Definitions. The following definitions shall be for all purposes, unless otherwise
clearly indicated to the contrary, applied to the terms used in this Agreement. Capitalized terms used herein but not defined shall have the meanings ascribed to them in the Limited Liability Company Agreement. 

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

“Business Day” means Monday through Friday of each Week, except that a legal holiday recognized as such by the
government of the United States of America or the State of Texas shall not be regarded as a Business Day. 

“Closing” means the closing of the issuance of the Rattler LLC Units by Rattler LLC to the Partnership under this
Agreement. 
 “Closing Date” means the closing date of the IPO. 

“IPO” has the meaning set forth in the recitals. 

“Limited Liability Company Agreement” means the Second Amended and Restated Limited Liability Company Agreement of
Rattler Midstream Operating LLC, dated February 18, 2019, as it may be amended, supplemented or restated from time to time. 

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

  
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 “Person” means an individual or a corporation, firm, limited
liability company, partnership, joint venture, trust, unincorporated organization, association, government agency or political subdivision thereof or other entity. 

“Rattler LLC” has the meaning set forth in the preamble. 

“Rattler LLC Units” has the meaning set forth in the recitals. 

“Securities Act” means the Securities Act of 1933, as amended, supplemented or restated from time to time, and any
successor to such statute. 
 ARTICLE II. 

PURCHASE OF RATTLER LLC UNITS 

Section 2.01    On the Closing Date, (i) the Partnership will make a capital contribution to Rattler LLC of
$631,750,000 and (ii) Rattler LLC will issue to the Partnership 38,000,000 Rattler LLC Units. 
 ARTICLE III. 

CLOSING 

Section 3.01    At the Closing, each of the Partnership and Rattler LLC shall take, or cause to be taken, all such
actions and shall execute and deliver, or cause to be executed and delivered, all such documents (within its power to do so) required to effect the issuance of Rattler LLC Units to the Partnership as provided herein. 

Section 3.02    At least one Business Day prior to the Closing Date, Rattler LLC shall deliver to the Partnership
instructions designating the account or accounts to which the capital contribution shall be deposited by federal funds wire transfer on the Closing Date. 

ARTICLE IV. 

REPRESENTATIONS AND WARRANTIES 

Section 4.01    Organization; Authority; Valid and Binding Agreement. Each of the parties hereto hereby
represents and warrants to the other, as of the date hereof and as of the Closing Date, that (i) it is duly organized, validly existing and in good standing under the laws of its jurisdiction of organization, (ii) it has the corporate or
other similar power and authority, and has taken all necessary corporate or other similar action, as applicable, to authorize, execute, deliver and perform its obligations under this Agreement, (iii) this Agreement has been duly executed and
delivered by it, (iv) this Agreement, when executed and delivered by such party, assuming due execution and delivery hereof by the other party hereto, is a legal, valid and binding obligation of it, enforceable against it in accordance with its
terms, subject to applicable bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium or similar laws affecting creditors’ rights generally and (v) the execution, delivery and performance by it of this Agreement does not
(a) require any material governmental filing or governmental approval or any material consent or approval of such party’s stockholders, partners, members or any other third parties, except for such filings that have been, or will as
promptly as reasonably practicable hereafter be, made and such consents or approvals that have been obtained, or will as promptly as reasonably practicable hereafter be sought, or (b) materially violate or conflict with, result in a material
breach of, or constitute a material default under any of its organizational documents or any agreements by which it is bound. 

  
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 Section 4.02    Additional Representations and Warranties of
Rattler LLC. Rattler LLC hereby further represents and warrants to the Partnership, as of the date hereof and as of the Closing Date, that the Rattler LLC Units to be issued to the Partnership hereunder have been duly authorized and, when issued
and delivered by Rattler LLC pursuant to the Limited Liability Company Agreement against payment of the consideration set forth herein, will be validly issued and fully paid (to the extent required under the Limited Liability Company Agreement) and
nonassessable (except as such nonassessability may be affected by Section 18-607 and 18-804 of the Delaware Limited Liability Company Act). 

Section 4.03    Additional Representations and Warranties of the Partnership. 

(a)    The Partnership hereby further represents and warrants, as of the Closing Date, that the Partnership shall have
available funds sufficient to make the capital contribution to Rattler LLC as contemplated herein, subject to the understanding of the parties hereto that such capital contribution shall be funded solely through the net proceeds received by the
Partnership from the sale of its common units to the underwriters in the IPO. 
 (b)    The Partnership further hereby
represents and warrants to Rattler LLC, as of the date hereof and as of the Closing Date, that (i) the Rattler LLC Units it is acquiring under this Agreement are being acquired for its own account and not with a view to any offering or
distribution within the meaning of the Securities Act and any applicable state securities laws, (ii) it has no present intention of selling or otherwise disposing of such Rattler LLC Units or any portion thereof in violation of such laws,
(iii) it has sufficient knowledge and expertise in financial and business matters so as to be capable of evaluating the merits and risks of acquiring such Rattler LLC Units and (iv) it understands that such Rattler LLC Units (a) have
not been registered under the Securities Act and (b) may not be sold or transferred in the absence of such registration or an exemption from such registration. 

Section 4.04    Certain Damages and Remedies. THE PARTIES HERETO EXPRESSLY WAIVE AND FOREGO ANY RIGHT TO
RECOVER PUNITIVE, EXEMPLARY, INDIRECT, SPECIAL, CONSEQUENTIAL OR SIMILAR DAMAGES (INCLUDING LOST PROFITS, LOSS OR CORRUPTION OF DATA OR DAMAGE DUE TO ANY IMPAIRMENT OF OPERATIONS) ARISING FROM OR IN CONNECTION WITH THIS AGREEMENT (INCLUDING ANY
ASSIGNMENTS OR TRANSFERS MADE OR RIGHTS GRANTED), WHETHER SUCH CLAIM IS BASED ON WARRANTY, CONTRACT, TORT (INCLUDING NEGLIGENCE OR STRICT LIABILITY) OR OTHERWISE, EVEN IF AN AUTHORIZED REPRESENTATIVE OF SUCH PARTY IS ADVISED OF THE POSSIBILITY OR
LIKELIHOOD OF THE SAME. 

  
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 ARTICLE V. 

FURTHER ASSURANCES 

Section 5.01    Each of the parties hereto hereby agrees, at its own cost and expense, from and after the date
hereof, to do, or cause to be done, all such acts and things, and to execute and deliver, or cause to be executed and delivered, all such documents, notices, instruments and agreements, as may be necessary or desirable to give effect to the
provisions and intent of this Agreement. 
 ARTICLE VI. 

ENTIRE AGREEMENT 

Section 6.01    This Agreement (together with any exhibits, annexes, schedules and the other agreements, documents
and instruments (i) incorporated or referenced hereby or delivered in connection herewith or (ii) related to or entered into in connection with the IPO, to the extent relating to the subject matter hereof) constitutes the entire agreement
between the parties hereto with respect to the subject matter hereof and supersedes and cancels all previous agreements and understandings, whether written or oral, between the parties hereto with respect to such subject matter. 

ARTICLE VII. 

MISCELLANEOUS 

Section 7.01    Notices. Any notice, statement, demand, claim, offer or other written instrument
required or permitted to be given pursuant to this Agreement shall be in writing signed by the party hereto giving such notice and shall be sent by email, hand messenger delivery, overnight courier service, or certified mail (receipt requested) to
the other party hereto at the address set forth below; provided that to be effective any such notice sent originally by email must be followed within two Business Days by a copy of such notice sent by overnight courier service: 

If to the Partnership: 
 Rattler
Midstream LP 
 500 West Texas, Suite 1200 

Midland, Texas 79701 
 Email:
MZmigrosky@diamondbackenergy.com 
 Attention: P. Matt Zmigrosky, General Counsel 

If to Rattler LLC: 
 Rattler
Midstream Operating LLC 
 500 West Texas, Suite 1200 

Midland, Texas 79701 
 Email:
MZmigrosky@diamondbackenergy.com 
 Attention: P. Matt Zmigrosky, General Counsel 

Each Party shall have the right to change the place to which notices shall be sent or delivered or to specify one additional address to which
copies of notices may be sent, in either case 

  
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by similar notice sent or delivered in like manner to the other Party. Without limiting any other means by which a Party may be able to prove that a notice has been received by another Party, all
notices and communications shall be deemed to have been duly given: (i) at the time delivered by hand, if personally delivered; (ii) five Business Days after being deposited in the mail, postage prepaid, if mailed by first class certified
mail, receipt requested; (iii) when received, if sent by email, if received prior to 5 p.m., recipient’s time, on a Business Day, or on the next Business Day, if received later than 5 p.m., recipient’s time; and (iv) on the next
Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery. In any case hereunder in which a Party is required or permitted to respond to a notice from another Party within a specified period,
such period shall run from the date on which the notice was deemed duly given as above provided, and the response shall be considered to be timely given if given as above provided by the last day of the period provided for such response. 

Section 7.02    Successors and Assigns. Except as contemplated by
Section 7.05, neither this Agreement nor any of the rights or obligations hereunder shall be assigned by any of the parties hereto without the prior written consent of the other parties. Subject to the preceding sentence,
this Agreement will be binding upon, inure to the benefit of and be enforceable by the parties and their respective successors and assigns.  

Section 7.03    Counterparts. This Agreement may be executed in counterparts (which may be delivered by
electronic transmission). Each counterpart when so executed and delivered shall be deemed an original, and both such counterparts taken together shall constitute one and the same instrument. 

Section 7.04    Parties in Interest. This Agreement is binding upon and is for the benefit of the
parties hereto and their respective successors and permitted assigns. This Agreement is not made for the benefit of any Person not a party hereto, and no Person other than the parties hereto and their respective successors and permitted assigns will
acquire or have any benefit, right, remedy or claim under or by virtue of this Agreement. 

Section 7.05    Captions. All Section titles or captions contained in this Agreement or in the table of
contents of this Agreement are for convenience only and shall not be deemed to be a part of this Agreement or affect the meaning or interpretation of this Agreement 

Section 7.06    Assignment. No party will convey, assign or otherwise transfer either this Agreement or
any of the rights, interests or obligations hereunder without the prior written consent of the other party hereto (in each of such party’s sole and absolute discretion). Any such prohibited conveyance, assignment or transfer without the prior
written consent of the other party hereto will be void ab initio. 
 Section 7.07    Severability.
Whenever possible each provision and term of this Agreement will be interpreted in a manner to be effective and valid. If any term or provision of this Agreement or the application of any such term or provision to any Person or circumstance
shall be held invalid, illegal or unenforceable in any respect by a court of competent jurisdiction, the remaining provisions hereof, or the application of such term or provision to Persons or circumstances other than those as to which it has been
held invalid, illegal or unenforceable, will remain in full force and effect and will in no way be affected, impaired or invalidated thereby. If any term or provision 

  
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of this Agreement is held to be prohibited or invalid, then such term or provision will be ineffective only to the extent of such prohibition or invalidity without invalidating or affecting in
any manner whatsoever the remainder of such term or provision or the other terms and provisions of this Agreement. Upon determination that any other term or provision of this Agreement is invalid, void, illegal or unenforceable, a court of competent
jurisdiction will modify such term or provision so as to effect the original intent of the parties as closely as possible in an acceptable manner to the end that the transactions contemplated hereby are fulfilled to the fullest extent possible under
the applicable laws. 
 Section 7.08    Expenses. Each party shall bear its own expenses in connection with
this Agreement, except as otherwise expressly provided herein. 
 Section 7.09    Amendment, Modification and
Waiver. This Agreement may be modified, amended or supplemented only by written agreement executed by the parties hereto. Any failure of a party to comply with any obligation or agreement hereunder may only be waived in writing by the other
party, but such waiver shall not operate as a waiver of, or estoppel with respect to, any subsequent or other failure. No failure by a party to take any action with respect to any breach of this Agreement or default by the other party shall
constitute a waiver of such party’s right to enforce any provision hereof or to take any such action. 

Section 7.10    Termination. This Agreement shall terminate upon the consummation of Rattler LLC’s
issuance of Rattler LLC Units set forth herein. Notwithstanding the foregoing, the obligations of the parties hereto under Section 4.04 of this Agreement shall remain in full force and effect following such time. 

Section 7.11    Applicable Law; Forum; Venue and Jurisdiction; Waiver of Trial by Jury. 

(a)    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. 
 (b)    Each of the parties hereto: 

(i)    irrevocably agrees that any claims, suits, actions or proceedings 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 between the parties hereto, or the rights or powers of, or restrictions on, the parties
hereto) shall be exclusively brought in the Court of Chancery of the State of Delaware (or, if such court does not have subject matter jurisdiction thereof, 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 the Court of Chancery of the State of Delaware (or, if such
court does not have subject matter jurisdiction thereof, any other court located in the State of Delaware with subject matter jurisdiction) in connection with any such claim, suit, action or proceeding; 

  
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 (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 the Court of Chancery of the State of Delaware or of any other court to which proceedings in the Court of Chancery of the State of Delaware 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; 

(iv)    expressly waives any requirement for the posting of a bond by a party bringing such claim, suit, action or
proceeding; 
 (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 this clause (v) shall affect or limit any right to serve process in any other manner permitted by law; and 

(vi)    IRREVOCABLY WAIVES THE RIGHT TO TRIAL BY JURY IN ANY SUCH CLAIM, SUIT, ACTION OR PROCEEDING. 

[Signature Page Follows.] 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed by their
respective duly authorized officers as of the date first written above. 
  

			
	Rattler Midstream LP
		
	By:	 	Rattler Midstream GP LLC,
		 	its general partner
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Financial Officer and Assistant Secretary
	
	Rattler Midstream Operating LLC
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Financial Officer and Assistant Secretary

 [Signature Page to Equity Contribution Agreement]EX-10.6

 Exhibit 10.6 

SERVICES AND SECONDMENT AGREEMENT 

AMONG 
 DIAMONDBACK
ENERGY, INC. 
 DIAMONDBACK E&P LLC 

RATTLER MIDSTREAM GP LLC 

RATTLER MIDSTREAM LP 

AND 
 RATTLER MIDSTREAM
OPERATING LLC 

 SERVICES AND SECONDMENT AGREEMENT 

This Services and Secondment Agreement (this “Agreement”), dated as of May 28, 2019 (the “Effective
Date”), is entered into among Diamondback Energy, Inc., a Delaware corporation (“Diamondback”), Diamondback E&P LLC, a Delaware limited liability company (“E&P”), Rattler Midstream GP LLC, a
Delaware limited liability company (the “General Partner”), Rattler Midstream LP, a Delaware limited partnership (the “Partnership”) and Rattler Midstream Operating LLC, a Delaware limited liability company
(“OpCo”). Diamondback, E&P, the General Partner, the Partnership and OpCo are sometimes herein referred to individually as a “Party” and collectively as the “Parties.” 

RECITALS: 
 WHEREAS, the
General Partner is the general partner of the Partnership that through OpCo and its Subsidiaries (as defined below) is engaged in the business of crude oil gathering, metering and transportation; natural gas gathering, compression, metering and
transportation; fresh water sourcing, storage and distribution; produced water collection, cleaning, recycling and disposal; and other related assets and businesses; 

WHEREAS, Diamondback has (a) expertise in the management, construction, design, maintenance and operation of midstream infrastructure
assets, including crude oil gathering and long-haul pipelines, natural gas gathering pipelines, centralized gathering facilities, fresh water distribution and storage systems, and produced water pipelines and cleaning, recycling and disposal
facilities, (b) unique knowledge of the management, maintenance and operation of the Fasken Center in Midland, Texas (the “Fasken Center”) and (c) centralized general and administrative services that OpCo and its
affiliates have historically relied upon in connection with the ownership and operation of its assets; 
 WHEREAS, Diamondback can make
available, or cause to be made available, to the Partnership Parties (as defined below) the personnel necessary to perform (a) such management, construction, design, maintenance and operational functions with respect to assets owned by the
Midstream Group (as defined below) and (b) general and administrative services relating to operating the business of the Midstream Group; and 

WHEREAS, the Parties desire that Diamondback provide, or cause to be provided, to the Partnership Parties personnel necessary to manage,
construct, design, maintain and operate the Midstream Group’s assets, including the Fasken Center, and, in connection therewith, that Diamondback second, or cause to be seconded, certain personnel to the Partnership Parties. 

  
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 NOW THEREFORE, in consideration of the premises and the mutual covenants and agreements
contained herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties hereby agree as follows: 

ARTICLE 1 

DEFINITIONS 

1.1    Definitions. Capitalized terms used and not otherwise defined in this Agreement shall have the
following respective meanings, unless context clearly requires otherwise: 
 “Affiliate” means, with respect to any Person,
any other Person that directly or indirectly through one or more intermediaries Controls, is Controlled by or is under common Control with, the Person in question. For purposes of this Agreement, none of the Midstream Group shall be deemed to be an
Affiliate of any Diamondback Entity nor shall any Diamondback Entity be deemed to be an Affiliate of any of the Midstream Group. 

“Agreement” shall mean this Services and Secondment Agreement, together with all Exhibits attached hereto, as the same may be
amended, supplemented or restated from time to time in accordance with the provisions hereof. 
 “Allocation Percentage”
has the meaning set forth in Section 3.3. 
 “Benefit Plans” means any employee benefit plans and
any insurance programs that Diamondback or any of the Diamondback Entities now maintains or in the future may maintain for the benefit of the Seconded Employees or their dependents, including: deferred compensation, profit sharing, retirement,
retiree medical, 401(k), cafeteria, medical, and disability plans, workers’ compensation insurance, life insurance, accidental death and dismemberment insurance, long-term disability insurance, business travel and accident insurance, and any
EAP. 
 “Business Day” means Monday through Friday of each week, except that a legal holiday recognized as such by the
government of the United States of America or the State of Texas shall not be regarded as a Business Day. 
 “Control” or
“control” (including the terms “controlled” and “controlling”) means the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of a Person, whether through
ownership of voting securities, by contract or otherwise. 
 “Diamondback” has the meaning set forth in the introductory
paragraph to this Agreement. 
 “Diamondback Entities” means Diamondback, E&P and all of their direct and indirect
Subsidiaries, other than any of the Partnership Parties. 
 “E&P” has the meaning set forth in the introductory
paragraph to this Agreement. 
 “EAP” means Employee Assistance Program. 

“Effective Date” has the meaning set forth in the introductory paragraph to this Agreement. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended. 

  
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 “ERISA Affiliate” means any entity that would be treated as a single
employer with Diamondback under Sections 414(b), (c) or (m) of the Code or Section 4001(b)(1) of ERISA. 
 “Fasken
Center” has the meaning set forth in the recitals to this Agreement. 
 “General Partner” has the meaning set
forth in the introductory paragraph to this Agreement; provided that such term shall include its successors and permitted assigns that are admitted to the Partnership as general partner of the Partnership, in its capacity as general partner of the
Partnership (except as the context otherwise requires). 
 “Losses” means any and all costs, expenses (including reasonable
attorneys’ fees), claims, demands, losses, liabilities, obligations, actions, lawsuits and other proceedings, judgments and awards. 

“Midstream Group” means, collectively, the Partnership, OpCo and its Subsidiaries. 

“OpCo” has the meaning set forth in the introductory paragraph to this Agreement. 

“Partnership” has the meaning set forth in the introductory paragraph to this Agreement. 

“Partnership Agreement” means the First Amended and Restated Agreement of Limited Partnership of the Partnership, dated as of
the Effective Date, as the same may be amended, supplemented or restated from time to time. 
 “Partnership Parties” means
the General Partner and the Midstream Group. 
 “Party” has the meaning set forth in the introductory paragraph to this
Agreement. 
 “Period of Secondment” has the meaning set forth in Section 2.4. 

“Person” means an individual or a corporation, firm, limited liability company, partnership, joint venture, trust,
unincorporated organization, association, government agency or political subdivision thereof or other entity. 
 “Seconded
Contractor Expenses” has the meaning set forth in Section 3.2(b). 
 “Seconded
Contractors” has the meaning set forth in Section 2.5. 
 “Seconded Employee Expenses”
has the meaning set forth in Section 3.2(a). 
 “Seconded Employees” has the meaning set forth in
Section 2.4. 
 “Seconded Person Expenses” has the meaning set forth in
Section 3.2(b). 
 “Seconded Persons” means, collectively, the Seconded Employees and the
Seconded Contractors. 
 “Secondment” means each assignment of any Seconded Persons to the Partnership Parties from
Diamondback or any Diamondback Entities in accordance with the terms of this Agreement. 

  
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 “Services” has the meaning set forth in
Section 2.1. 
 “Services Reimbursement” has the meaning set forth in
Section 3.1. 
 “Subsidiary” means, with respect to any Person, (a) a corporation of which
more than 50% of the voting power of shares entitled (without regard to the occurrence of any contingency) to vote in the election of directors or other governing body of such corporation is owned, directly or indirectly, at the date of
determination, by such Person, by one or more Subsidiaries of such Person or a combination thereof, (b) a partnership (whether general or limited) in which such Person or a Subsidiary of such Person is, at the date of determination, a general
partner of such partnership, but only if such Person, directly or by one or more Subsidiaries of such Person, or a combination thereof, controls such partnership, directly or indirectly, at the date of determination or (c) any other Person in
which such Person, one or more Subsidiaries of such Person, or a combination thereof, directly or indirectly, at the date of determination, has (i) a majority ownership interest or (ii) the power to elect or direct the election of a
majority of the directors or other governing body of such Person. For purposes of this Agreement, none of the Midstream Group shall be deemed to be a Subsidiary of Diamondback nor shall Diamondback or E&P be deemed a Subsidiary of any of the
Midstream Group. 
 ARTICLE 2 

SECONDMENT 

2.1    Diamondback shall provide, or cause to be provided, to the Partnership Parties the Seconded Persons to
(a) perform the activities related to the Partnership Parties’ respective obligations under each of the agreements listed in Exhibit A, (b) otherwise perform the
day-to-day management of the assets of the Midstream Group and the business conducted, or to be conducted, by the Partnership Parties described in Exhibit A,
(c) to design, build, construct and otherwise install the infrastructure required by (or necessary or convenient to provide the services required under) the agreements listed in Exhibit A and (d) perform the management, general and
administrative services described in Exhibit A, to be received by the General Partner, for the benefit of the Partnership Parties, at the places of business of the General Partner ((a) through (d) collectively referred to herein as the
“Services”). 
 2.2    Subject to Diamondback’s right to be reimbursed for such expenses in
accordance with this Agreement, Diamondback shall pay (or shall cause E&P to pay) all expenses incurred by it in connection with the retention of the Seconded Persons, including, but not limited to, Seconded Employee compensation, salaries,
wages, benefit costs, overhead and administrative expenses, charged to or incurred by Diamondback or E&P, and, if applicable, social security taxes, workers compensation insurance, retirement and insurance benefits and other such expenses. Any
Seconded Employees retained by the Diamondback Entities may be union or non-union employees, and the Diamondback Entities shall have the sole right to negotiate the terms and provisions of any labor or other
agreements with the unions to which such employees belong. 
 2.3    Diamondback shall provide, or cause to be
provided, such suitably qualified and experienced Seconded Persons as Diamondback is able to make available to the Partnership Parties, and the Partnership Parties shall have the right to approve such Seconded Persons. 

  
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 2.4    During the term of this Agreement, Diamondback or E&P
shall second employees of the Diamondback Entities that provide the Services to the Partnership Parties. Each employee who Diamondback or E&P seconds to the Partnership Parties shall, during the time that such employee is seconded to the
Partnership Parties under this Agreement (the “Period of Secondment”), be referred to individually herein as a “Seconded Employee” and, collectively, as the “Seconded Employees.” 

2.5    During the term of this Agreement, Diamondback shall second, or cause to be seconded, contractors of the
Diamondback Entities that provide the Services to the Partnership Parties. Each such contractor shall, during the Period of Secondment, be referred to individually herein as a “Seconded Contractor” and, collectively, as the
“Seconded Contractors,” and together with the Seconded Employees, the “Seconded Persons.” 

2.6    The Seconded Employees will remain at all times employees of the applicable Diamondback Entities. For the
avoidance of doubt, the Parties acknowledge that Seconded Persons may, during the Period of Secondment, be called upon to perform services for both the Partnership Parties and the Diamondback Entities. The Diamondback Entities retain the right to
terminate the Secondment of any Seconded Persons for any reason at any time or to discharge the Seconded Employees with respect to their employment with the Diamondback Entities. During the Term, the Partnership Parties shall have the right to
request that Diamondback remove any individual from the roster of Seconded Employees providing Services to the Partnership Entities. Diamondback agrees that it will remove any such individual from the status of a Seconded Employee upon written
request by any Partnership Party. Diamondback shall have the sole right, with or without the consent of the Partnership Parties, to terminate the employment of any Seconded Employee. However, the parties agree that the Partnership Parties shall have
the sole right to determine the level of Services required from the Seconded Persons and its satisfaction with the performance of such Services by the Seconded Employees in connection with the Services and that Diamondback will use commercially
reasonable efforts to provide Seconded Employees in a manner consistent with the needs expressed by any Partnership Party, but at no time will any Partnership Party have the right to terminate any Seconded Person, including any Seconded
Employee’s employment by a Diamondback Entity or a Seconded Contractor’s independent contractor relationship with a Diamondback Entity. Upon the termination of the Secondment of any Seconded Persons, such Seconded Persons will cease
performing Services for the Partnership Parties. 
 (a)    The Parties agree that Diamondback and each of its Affiliates
and agents shall perform the Services hereunder in the capacity of an independent contractor. The Seconded Employees shall continue to be the common law employees of the Diamondback Entities and shall have no employment or contractual relationship
with the Partnership Parties during the Term. The Partnership Parties shall not hold out the Seconded Employees as agents of Diamondback in the course of the performance by the Seconded Employees of their duties in respect of the Services. 

(b)    The Partnership Parties shall be responsible for specifying to Diamondback the day-to-day manner of operations and assignments for Seconded Employees and reviewing the work performed by the Seconded Employees to determine whether the Services rendered in connection with the Agreement
are consistent with the results to be achieved, as specified by the Partnership Parties. Nothing in this Agreement shall preclude the Partnership Parties from hiring 

  
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or employing any employees during the Term of this Agreement; provided, however, that the Diamondback Entities shall have no obligation to provide and shall not provide any employee benefits,
payroll or HR Services to or with respect to any employees of the Partnership Parties. 
 2.7    Each Party shall
nominate a representative to act as its primary contact with respect to the provision of the Services contemplated by this Agreement (each, a “Service Coordinator”). The initial Service Coordinators shall be designated by the
respective parties following the Effective Date. Unless otherwise agreed, all notices and communications relating to this Agreement, other than those day-to-day
communications and billings relating to the actual provision of the Services, shall be directed to the Service Coordinators. In the course and scope of performing any job functions for the Partnership Parties, each Seconded Employee will report to
the Diamondback management structure and the Diamondback management structure, through the Diamondback Service Coordinator will report into the Partnership Parties’ management structure through the Partnership Parties Service Coordinator.
However, Seconded Employees will be under the direct management, supervision and control of the Diamondback Entities with respect to such Seconded Employee’s performance of the Services, with Seconded Contractors remaining at the direction of
the respective contractor. No Seconded Contractors shall have the authority or apparent authority to act on behalf of any Diamondback Entity in connection with the performance of the Services during any Period of Secondment. 

2.8    Those Seconded Employees who serve as supervisors or managers and who are called upon to oversee the work of
other Seconded Employees providing or to otherwise provide management support on behalf of the Parties are designated by the Diamondback Entities as supervisors to act on the behalf of the Diamondback Entities in supervising the Seconded Employees
pursuant to Section 2.7 above. Any such Seconded Employee will be acting on the behalf of the Diamondback Entities when supervising the work of the Seconded Employees or when they are otherwise providing management or
executive support in connection with the Services performed on behalf of the Partnership Parties. 

2.9    Diamondback shall, or shall cause a Diamondback Entity to, obtain workers’ compensation coverage as
defined and required by law on behalf of both the Diamondback Entities and the Partnership Parties. 

2.10    The Partnership Parties may terminate any of the Services performed by Seconded Persons on thirty
(30) days’ prior written notice to Diamondback. In the event the Partnership Parties, or any of them, terminates such Services, the Partnership Parties shall pay Diamondback the Services Reimbursement (as defined below) for the last month
(or portion thereof) in which it received such terminated Services. Upon payment thereof, the Partnership Parties shall have no further Services payment obligations to Diamondback pursuant to this Agreement with respect to such terminated Services.

 2.11    No Partnership Party shall be deemed to be a participating employer in any Benefit Plans during the
Period of Secondment. Subject to the Partnership Parties’ reimbursement obligations hereunder, Diamondback (or another Diamondback Entity) shall remain solely responsible for all obligations and liabilities arising under the express terms of
the Benefit Plans, and the Seconded Employees will be covered under the Benefit Plans subject to and in accordance with their respective terms and conditions, as they may be amended from time to time.

  
 6 

 
Diamondback and its ERISA Affiliates may amend or terminate any Benefit Plans in whole or in part at any time (subject to the applicable provisions of any collective bargaining agreement covering
Seconded Employees, if any). During the Period of Secondment, no member of the Partnership Parties shall assume any Benefit Plans or have any obligations, liabilities or rights arising under the express terms of the Benefit Plans, in each case
except for cost reimbursement pursuant to this Agreement. 
 ARTICLE 3 

EXPENSE REIMBURSEMENT 

3.1    The Partnership Parties shall reimburse Diamondback or E&P, as applicable, for all reimbursable expenses
under Section 3.2 incurred by the Diamondback Entities with respect to Seconded Persons, as applicable (including, where applicable, former Seconded Employees), in connection with the performance of the Services during the
preceding period (the “Services Reimbursement”). The Services Reimbursement shall be made on a monthly basis or at such other intervals as the Parties may agree from time to time. 

3.2    (a) The Services Reimbursement with respect to Seconded Employees for each period during the Period of
Secondment shall include all reasonable costs and expenses (including administrative and benefits costs) incurred for such period by Diamondback Entities for the Seconded Employees (including, where applicable, former Seconded Employees), including
but not limited to the following costs and expenses set forth below: 
  

	 	(i)	 salary, wages and cash bonuses (including payroll and withholding taxes associated therewith);

  

	 	(ii)	 amounts paid with respect any Seconded Employee’s paid leave of absence; 

 

	 	(iii)	 contributions made by or expenses incurred by a Diamondback Entity towards any Benefit Plans (including
incurred but unreported and incurred but unpaid claims incurred during the Period of Secondment and subsequent liabilities attributable to the performance of the Services incurred for such period by Diamondback Entities with respect to the Period of
Secondment); 

  

	 	(iv)	 the value of equity-related compensation granted to Seconded Employees during the Period of Secondment;

  

	 	(v)	 any other employee benefit or compensation arrangement customarily provided to all employees by Diamondback for
which Diamondback incurs costs with respect to Seconded Employees; and 

  

	 	(vi)	 business travel expenses and other business expenses reimbursed in the normal course by Diamondback, such as
subscriptions to business- related periodicals and dues to professional business organizations. 

 The costs and expenses described in
this Section 3.2(a) are referred to as “Seconded Employee Expenses.” Where it is not reasonably practicable to determine the amount of such a cost or expense, the Partnership Parties and Diamondback shall
mutually agree on the method of 

  
 7 

 
determining or estimating such cost or expense. If the actual amount of any cost or expense, once known, varies from the estimate used for billing purposes hereunder, the difference, once
determined, shall be reflected as either a credit or additional charge in the next monthly invoice issued by a Diamondback Entity, or in such manner as may be otherwise agreed between Diamondback and the General Partner. Notwithstanding the
foregoing, the Parties agree that to determine the value of a Second Employee’s non-wage benefits described in subsections (iii) and (v) of this Section 3.2(a), they will
apply an agreed percentage benefit load, based on the value of employee benefits provided to all employees of the Diamondback Entities. 

(b)    The Services Reimbursement with respect to Seconded Contractors for each period during the Period of Secondment
shall include, on a pass-through basis, all costs and expenses attributable to the performance of the Services incurred for such period by Diamondback Entities with respect to the Seconded Contractors. The costs and expenses described in this
Section 3.2(b) are referred to as “Seconded Contractor Expenses,” and together with the Seconded Employee Expenses, the “Seconded Person Expenses.” 

3.3    With respect to those Seconded Persons who perform services for both the Diamondback Entities and the
Partnership Parties, the Parties will determine in good faith the percentage of such Seconded Person’s time spent providing services to the Partnership Parties (the “Allocation Percentage”). For each month, or other time
interval agreed to by the Parties, during the Period of Secondment, the amount of the Services Reimbursement payable by the Partnership Parties with respect to each Seconded Person shall be calculated by multiplying the Seconded Person Expenses for
such Seconded Person times the Allocation Percentage for such Seconded Person; provided, however, that travel expenses and other expenses incurred with respect to and/or reimbursable to a Seconded Person shall be paid by the Party for whom the
Seconded Person was working at the time they were incurred, except that expenses related to activities that benefit both the Partnership Parties and Diamondback Entities (e.g. some types of training) shall be shared by the affected Parties in
accordance with the Allocation Percentage (or such other allocation as may be agreed between the affected Parties). 

3.4    The Partnership Parties and Diamondback acknowledge and agree that Diamondback shall be responsible for
paying the Seconded Employee Expenses (or providing the employee benefits with respect thereto, as applicable) to the Seconded Employees and that the Diamondback Entities may be responsible for paying the Seconded Contractor Expenses to the
respective contractor, but that the Partnership Parties shall be responsible for reimbursing the Diamondback Entities for the Seconded Person Expenses (as part of the Services Reimbursement) to the extent provided under
Section 3.2 of this Agreement. 
 3.5    This Agreement does not address the
reimbursement of any costs or expenses associated with Services other than the Services Reimbursement. To the extent that a Diamondback Entity incurs any out-of-pocket
expenses (other than the Services Reimbursement) in connection with the provision of Services, such Diamondback Entity may be entitled to reimbursement therefor under the terms of the Partnership Agreement or other documentation. 

  
 8 

 ARTICLE 4 

ALLOCATION; RECORDS 

Diamondback will use commercially reasonable efforts to (i) establish the Allocation Percentage and to the document the basis for such
allocation and (ii) maintain a schedule reflecting the direct and indirect costs of the Seconded Person Expenses based on the Services that the Seconded Persons have provided to the Partnership Parties. The Partnership Parties will use
commercially reasonable efforts to keep and maintain books/records reflecting the hours worked in connection with each of the Seconded Persons. Each Party will have the right to audit such records maintained by the other during regular business
hours and on reasonable prior notice. 
 ARTICLE 5 

TERM 
 The term of this
Agreement will commence on the Effective Date and will continue for an initial period of fifteen (15) years (the “Initial Term”). Upon the expiration of the Initial Term, the term of this Agreement shall automatically extend
for successive one year extension terms, unless either Party provides at least thirty (30) days’ prior written notice to the other Party prior to the expiration of the Initial Term or any extension term that the Party wishes for this
Agreement to expire at the end of the Initial Term or the then-current extension term, as applicable. Upon proper notice by a Party to the other Party, in accordance with this Article 5, that the Party wishes for this Agreement to expire on
the expiration of the applicable period, this Agreement shall not automatically extend, but shall instead expire upon the expiration of the applicable period and only those provisions that, by their terms, expressly survive this Agreement shall so
survive. Notwithstanding the foregoing, the Partnership Parties may terminate this Agreement at any time upon written notice to Diamondback stating the date of termination and only those provisions that, by their terms, expressly survive this
Agreement shall so survive. 
 ARTICLE 6 

GENERAL PROVISIONS 

6.1    Entire Agreement. This Agreement constitutes the entire agreement between the Parties with respect to
the subject matter hereof and this Agreement supersedes all prior negotiations, agreements or understandings of the Parties of any nature, whether oral or written, relating thereto. 

6.2    Applicable Law. This Agreement shall be construed in accordance with and governed by the laws of the
State of Texas, without regard to the principles of conflicts of law. 
 6.3    Amendment. This Agreement
may be modified, amended or supplemented only by written agreement executed by the Parties. 

6.4    Waiver. Any term or provision of this Agreement may be waived, or the time for its performance may be
extended, by the Party or Parties entitled to the benefit thereof. Any such waiver shall be validly and sufficiently given for the purposes of this Agreement if, as to any Party, it is in writing signed by an authorized representative of such Party.
The failure of any Party to enforce at any time any provision of this Agreement shall not be construed to be a waiver of such provision, or in any way to affect the validity of this Agreement or any part hereof or the right of any Party thereafter
to enforce each and every such provision. No waiver of any breach of this Agreement shall be held to constitute a waiver of any other or subsequent breach. 

  
 9 

 6.5    Severability. Whenever possible each provision and
term of this Agreement will be interpreted in a manner to be effective and valid. If any term or provision of this Agreement or the application of any such term or provision to any Person or circumstance shall be held invalid, illegal or
unenforceable in any respect by a court of competent jurisdiction, the remaining provisions hereof, or the application of such term or provision to Persons or circumstances other than those as to which it has been held invalid, illegal or
unenforceable, will remain in full force and effect and will in no way be affected, impaired or invalidated thereby. If any term or provision of this Agreement is held to be prohibited or invalid, then such term or provision will be ineffective only
to the extent of such prohibition or invalidity without invalidating or affecting in any manner whatsoever the remainder of such term or provision or the other terms and provisions of this Agreement. Upon determination that any other term or
provision of this Agreement is invalid, void, illegal or unenforceable, a court of competent jurisdiction will modify such term or provision so as to effect the original intent of the Parties as closely as possible in an acceptable manner to the end
that the transactions contemplated hereby are fulfilled to the fullest extent possible under the Law. 

6.6    Successors and Assigns. Except as contemplated by Section 6.10, neither this Agreement nor any
of the rights or obligations hereunder shall be assigned by any of the parties hereto without the prior written consent of the other parties. Subject to the preceding sentence, this Agreement will be binding upon, inure to the benefit of and be
enforceable by the parties and their respective successors and assigns. 
 6.7    Third Party
Beneficiaries. This Agreement is binding upon and is for the benefit of the Parties hereto and their respective successors and permitted assigns. This Agreement is not made for the benefit of any Person not a party hereto, and no Person other
than the Parties hereto and their respective successors and permitted assigns will acquire or have any benefit, right, remedy or claim under or by virtue of this Agreement. In furtherance but not in limitation of the foregoing: (i) nothing in
this Agreement shall be deemed to provide any Seconded Employee or Seconded Contractor with a right to continued Secondment or employment; and (ii) nothing in this Agreement shall be deemed to constitute an amendment to any Benefit Plans or
limit in any way the right of Diamondback and/or its ERISA Affiliates to amend, modify or terminate, in whole or in part, any Benefit Plans which may be in effect from time to time. 

6.8    Notices. Any notice, statement, demand, claim, offer or other written instrument required or
permitted to be given pursuant to this Agreement shall be in writing signed by the Party giving such notice and shall be sent by email, hand messenger delivery, overnight courier service, or certified mail (receipt requested) to each other Party at
the address set forth below; provided 

  
 10 

 
that to be effective any such notice sent originally by email must be followed within two (2) Business Days by a copy of such notice sent by overnight courier service: 

if to a Diamondback Entity: 

Diamondback Energy, Inc. 
 500
West Texas, Suite 1200 
 Midland, Texas 79701 

Email: mzmigrosky@diamondbackenergy.com 

Attention: P. Matt Zmigrosky, General Counsel 

if to a member of the Partnership Parties: 

Rattler Midstream GP LLC 
 500
West Texas, Suite 1200 
 Midland, Texas 79701 

Email: mzmigrosky@diamondbackenergy.com 

Attention: P. Matt Zmigrosky, General Counsel 

Each Party shall have the right to change the place to which notices shall be sent or delivered or to specify one additional address to which
copies of notices may be sent, in either case by similar notice sent or delivered in like manner to the other Party. Without limiting any other means by which a Party may be able to prove that a notice has been received by another Party, all notices
and communications shall be deemed to have been duly given: (i) at the time delivered by hand, if personally delivered; (ii) five (5) Business Days after being deposited in the mail, postage prepaid, if mailed by first class certified
mail, receipt requested; (iii) when received, if sent by email, if received prior to 5 p.m., recipient’s time, on a Business Day, or on the next Business Day, if received later than 5 p.m., recipient’s time; and (iv) on the next
Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery. In any case hereunder in which a Party is required or permitted to respond to a notice from another Party within a specified period,
such period shall run from the date on which the notice was deemed duly given as above provided, and the response shall be considered to be timely given if given as above provided by the last day of the period provided for such response. 

6.9    Relationship of the Parties. Nothing in this Agreement will constitute the Midstream Group,
Diamondback or their respective Affiliates as members of any partnership, joint venture, association, syndicate or other entity. 

6.10    Assignment. No Party will convey, assign or otherwise transfer either this Agreement or any of the
rights, interests or obligations hereunder without the prior written consent of the other Parties hereto (in each of such Party’s sole and absolute discretion). Any such prohibited conveyance, assignment or transfer without the prior written
consent of the other Parties will be void ab initio; provided, however, that any Party may assign or convey this Agreement without the prior written consent of any other Party to an Affiliate. 

6.11    Counterparts. This Agreement may be executed in counterparts (which may be delivered by electronic
transmission). Each counterpart when so executed and delivered shall be deemed an original, and both such counterparts taken together shall constitute one and the same instrument. 

  
 11 

 6.12    Time of the Essence. Time is of the essence of
this Agreement; provided, however, notwithstanding anything to the contrary in this Agreement, if the time period for the performance of any covenant or obligation, satisfaction of any condition or delivery of any notice or item required under this
Agreement shall expire on a day other than a Business Day, such time period shall be extended automatically to the next Business Day. 

6.13    Signatories Duly Authorized. Each of the signatories to this Agreement represents that he is duly
authorized to execute this Agreement on behalf of the entities for which he is signing, and that such signature is sufficient to bind the Party or other entity purportedly represented. 

(Signature page follows) 

  
 12 

 IN WITNESS WHEREOF, the Parties have caused this Agreement to be signed by their authorized
representatives as of the date first above written. 
  

			
	DIAMONDBACK ENERGY, INC.
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Accounting Officer and Assistant Secretary
	
	DIAMONDBACK E&P LLC
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Accounting Officer and Assistant Secretary
	
	RATTLER MIDSTREAM GP LLC
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Financial Officer and Assistant Secretary

  
 [Signature Page to
Services and Secondment Agreement] 

 
			
	RATTLER MIDSTREAM LP
		
	By:	 	Rattler Midstream GP LLC,
		 	its general partner
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Financial Officer and Assistant Secretary
	
	RATTLER MIDSTREAM OPERATING LLC
		
	By:	 	 /s/ Teresa L. Dick

	Name:	 	Teresa L. Dick
	Title:	 	Executive Vice President, Chief Financial Officer and Assistant Secretary

  
 [Signature Page to
Services and Secondment Agreement] 

 EXHIBIT A 

Services 
 The
Services include, but are not limited to: 
  

	 	•	 	 Operation of the midstream assets of the Midstream Group members in accordance with prudent industry practice
pursuant to each of the following agreements: 

  

	 	•	 	 Freshwater Purchase and Services Agreement, dated effective as of January 1, 2018 by and between E&P and
OpCo, as may be amended, supplemented, restated or otherwise modified from time to, pursuant to which OpCo, among other things, gathers, stores and distributes fresh water to Diamondback’s drilling and completion sites. 

 

	 	•	 	 Gas Gathering and Compression Agreement, dated effective as of January 1, 2018 by and between E&P and
OpCo, as may be amended, supplemented, restated or otherwise modified from time to time, pursuant to which OpCo, among other things, services the production of natural gas from Diamondback’s Utah field within the Permian; 

 

	 	•	 	 Amended and Restated Crude Oil Gathering Agreement, dated effective as of January 1, 2018 by and between
E&P and OpCo, as may be amended, supplemented, restated or otherwise modified from time to time, pursuant to which pursuant to which OpCo, among other things, gathers crude oil from Diamondback’s Spanish Trail, Utah and Reward fields within
the Permian; and 

  

	 	•	 	 Amended and Restated Produced and Flowback Water Gathering and Disposal Agreement, dated effective as of
January 1, 2018 by and between E&P and OpCo, as may be amended, supplemented, restated or otherwise modified from time to time, pursuant to which OpCo, among other things, gathers and disposes of saltwater from operations throughout
Diamondback’s Permian acreage. 

  

	 	•	 	 Operation, management and maintenance of the Fasken Center in accordance with prudent industry practice.

  

	 	•	 	 Such other operational functions that are necessary to develop and execute the operational aspects of the
business of the Partnership Parties. 

  
 A-1 

	 	•	 	 Payroll and billing services, including payment of compensation for the services of and, as applicable, the
provision of employee benefits to Seconded Persons. 

  

	 	•	 	 Management, general and administrative services, such as: 

 

	 	•	 	 billing, accounting, tax and internal audit; 

 

	 	•	 	 treasury, cash management and banking; 

 

	 	•	 	 investor relations; 

  

	 	•	 	 business development; 

  

	 	•	 	 executive services; 

  

	 	•	 	 human resources, including Benefit Plan reporting; 

 

	 	•	 	 public company reporting; and 

 

	 	•	 	 in-house legal services, risk management and regulatory compliance.

  

	 	•	 	 Such other management, general and administrative functions that are necessary to support the business of the
Partnership Parties. 

  
 A-2

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