EX-10.2





 Exhibit 10.2 

VOTING AND SUPPORT AGREEMENT 

THIS VOTING AND SUPPORT AGREEMENT (the “Agreement”), is dated as of October 20, 2020, by and among Pioneer Natural Resources
Company, a Delaware corporation (“Parent”), and Bryan Sheffield (the “Holder”), as a stockholder of Parsley Energy, Inc., a Delaware corporation (the “Company”). 

W I T N E S S E T H: 
 WHEREAS,
Parent, the Company, Pearl First Merger Sub Inc., a Delaware corporation and a wholly-owned Subsidiary of Parent (“Merger Sub Inc.”), Pearl Second Merger Sub LLC, a Delaware limited liability company and a wholly-owned Subsidiary of
Parent (“Merger Sub LLC”), Pearl Opco Merger Sub LLC, a Delaware limited liability company and a wholly-owned Subsidiary of Parent (“Opco Merger Sub LLC”), and Parsley Energy, LLC, a Delaware limited liability
company (“Opco LLC”), are entering into an Agreement and Plan of Merger dated as of the date hereof (as the same may be amended or supplemented from time to time, the “Merger Agreement”) providing for, among other
things, (i) the merger of Merger Sub Inc. with and into the Company, with the Company continuing as the surviving entity (the “Surviving Corporation”) (such merger, the “First Company Merger”), (ii)
simultaneously with the First Company Merger, the merger of Opco Merger Sub LLC with and into Opco LLC, with Opco LLC continuing as the surviving entity (such merger, the “Opco Merger”), and (iii) immediately following the
First Company Merger and the Opco Merger, the merger of the Surviving Corporation with and into Merger Sub LLC, with Merger Sub LLC continuing as the surviving entity (such merger, together with the First Company Merger and the Opco Merger, the
“Mergers”), in each case, on the terms and subject to the conditions of the Merger Agreement; 
 WHEREAS, the Holder is the
Beneficial Owner (as defined below) of 10,129,559 shares of Class A common stock, par value $0.01 per share, of the Company (the “Company Class A Common Stock”), 21,198,751 shares of Class B common
stock, par value $0.01 per share, of the Company (the “Company Class B Common Stock”) and 21,198,751 Units (as defined in the Fourth Amended and Restated Limited Liability Company Agreement of Opco LLC, dated as
of July 22, 2019) (the “Opco LLC Units”) (such shares of Company Class A Common Stock, Company Class B Common Stock and Opco LLC Units, the “Covered Securities”); 

WHEREAS, concurrently with the execution and delivery of the Merger Agreement, and as a condition and an inducement to Parent entering into
the Merger Agreement, the Holder is entering into this Agreement with respect to the Covered Securities; 
 WHEREAS, Parent desires that the
Holder agree, and the Holder is willing to agree, subject to the limitations herein, not to Transfer (as defined below) any of its Covered Securities, and to vote its Covered Securities in a manner so as to facilitate consummation of the Mergers and
the other transactions contemplated by the Merger Agreement; and 
 WHEREAS, Parent desires that the Holder agree, and the Holder is willing
to agree, subject to the limitations herein, not to transfer or take other certain specified actions with respect to any of the Lock-Up Shares (as defined below) during the
Lock-Up Period (as defined below). 












 NOW, THEREFORE, in consideration of the mutual covenants, representations, warranties and
agreements contained herein, and intending to be legally bound hereby, the parties agree as follows: 
 ARTICLE I 

GENERAL 

Section 1.1 Definitions. This Agreement is one of the “Voting Agreements” as defined in the Merger
Agreement. Capitalized terms used but not defined herein shall have the meanings set forth in the Merger Agreement. 
 “Beneficially
Own” or “Beneficial Ownership” has the meaning assigned to such term in Rule 13d-3 under the Exchange Act, and a Person’s beneficial ownership of securities shall be calculated
in accordance with the provisions of such Rule (in each case, irrespective of whether or not such Rule is actually applicable in such circumstance). For the avoidance of doubt, Beneficially Own and Beneficial Ownership shall also include record
ownership of securities. 
 “Beneficial Owners” shall mean Persons who Beneficially Own the referenced securities. 

“Permitted Lien” means (a) a collateral assignment or similar agreement, pledging or granting a Lien in Covered
Securities or a Person who directly or indirectly holds Covered Securities to a nationally recognized reputable banking organization in connection with any instrument governing Indebtedness of any Holder or any of its Affiliates, in each case as in
existence on the date of this Agreement, and (b) transfer restrictions of general applicability as may be provided under the Securities Act or other applicable securities Laws or as set forth in the Organizational Documents of the Holder or any
of its Affiliates. 
 “Transfer” means (a) any direct or indirect offer, sale, lease, assignment, encumbrance, loan,
pledge, grant of a security interest, hypothecation, disposition or other similar transfer (by operation of law or otherwise), either voluntary or involuntary, or entry into any contract, option or other arrangement or understanding with respect to
any offer, sale, lease, assignment, encumbrance, loan, pledge, hypothecation, disposition or other transfer (by operation of law or otherwise), of any Covered Securities owned by the Holder (whether beneficially or of record), including in each case
through the Transfer of any Person or any interest in any Person, or (b) in respect of any capital stock or interest in any capital stock, to enter into any swap or any other agreement, transaction or series of transactions that results in an
amount of Covered Securities subject to Article III that is less than the amount of Covered Securities subject to Article III as of the date hereof; but in each case excluding (i) the exchange of Opco LLC Units (together with the
same number of shares of Company Class B Common Stock) for shares of Company Class A Common Stock and (ii) (A) hedging and derivative transactions and (B) pledges and other security interest grants, in the case of any of the
foregoing in this clause (ii), if such transactions are with one or more counterparties that are nationally recognized reputable banking organizations and solely to the extent (I) such transactions are effected pursuant to agreements or
arrangements in existence as of the date of this Agreement, (II) such transactions do not have the intention or purpose of circumventing the transfer or other restrictions contained in this Agreement and (III) such transactions would not
reasonably be expected to impair the ability of the Holder to perform its obligations hereunder or to consummate the transactions contemplated hereby. 
  

  
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 ARTICLE II 

AGREEMENT TO RETAIN COVERED SECURITIES 

2.1 Transfer and Encumbrance of Covered Securities. 

(a) From the date hereof until the earlier of the Termination Date (as defined below) and the Effective Time, the Holder shall not, with
respect to any Covered Securities Beneficially Owned by the Holder, (i) Transfer any such Covered Securities or (ii) deposit any such Covered Securities into a voting trust or enter into a voting agreement or arrangement with respect to
such Covered Securities or grant any proxy (except as otherwise provided herein) or power of attorney with respect thereto. 
 (b)
Notwithstanding Section 2.1(a), the Holder may: (i) Transfer Covered Securities to one or more Affiliates (A) who is a party to an agreement with Parent with substantially similar terms as this Agreement or
(B) if, as a condition to such Transfer, the recipient agrees in writing to be bound by this Agreement and delivers a copy of such executed written agreement to Parent prior to the consummation of such Transfer or (ii) Transfer Covered
Securities with the prior written consent of Parent (which consent may be granted or withheld by Parent in its sole discretion). 
 (c)
Nothing in this Agreement shall prohibit direct or indirect transfers of equity or other interests in a Holder to an Affiliate of the Holder. 

2.2 Additional Purchases; Adjustments. The Holder agrees that any additional shares of capital stock or other equity of the Company or
Opco LLC that the Holder purchases or otherwise acquires or with respect to which the Holder otherwise acquires voting power after the execution of this Agreement and prior to the earlier of the Termination Date and the Effective Time shall be
subject to the terms and conditions of this Agreement to the same extent as if they constituted the Covered Securities as of the date hereof (and shall be deemed “Covered Securities” for all purposes hereof), and the Holder shall promptly
notify Parent of the existence of any such after acquired Covered Securities. In the event of any stock split, stock dividend, merger, reorganization, recapitalization, reclassification, combination, exchange of shares or the like of the capital
stock of the Company or any similar transaction with respect to the equity of Opco LLC, as applicable, affecting the Covered Securities, the terms of this Agreement shall apply to the resulting securities. 

2.3 Unpermitted Transfers; Involuntary Transfers. Any Transfer or attempted Transfer of any Covered Securities in violation of this
Article II shall, to the fullest extent permitted by Law, be null and void ab initio, with no further action required by or on behalf of Parent, the Company or Opco LLC. In furtherance of the foregoing, the Holder hereby agrees to
authorize and instruct the Company or Opco LLC, as applicable, to instruct its transfer agent to enter a stop transfer order with respect to all of the Covered Securities. If any involuntary Transfer of any of the Holder’s Covered Securities
shall occur, the transferee (which term, as used herein, shall include any and all transferees and subsequent transferees of the initial transferee) shall take and hold such Covered Securities subject to all of the restrictions, liabilities and
rights under this Agreement, which shall continue in full force and effect until valid termination of this Agreement. 

  
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 ARTICLE III 

AGREEMENT TO VOTE 
 3.1
Agreement to Vote. Prior to the earlier of the Termination Date and the Effective Time, the Holder irrevocably and unconditionally agrees that such Holder shall, at any meeting (whether annual or special and whether or not an adjourned or
postponed meeting), however called, of the stockholders of the Company or at any meeting or with respect to any written consent of the Members (as defined in the Opco LLC Agreement) of Opco LLC, as applicable, appear at such meeting or otherwise
cause the Covered Securities to be counted as present thereat for purpose of establishing a quorum and vote, or cause to be voted at such meeting, all Covered Securities: 

(a) in favor of adoption of the Merger Agreement and approving any other matters necessary for consummation of the transactions contemplated by
the Merger Agreement, including the Mergers (the “Transaction Matters”); and 
 (b) against (i) any Acquisition
Proposal or any other transaction, proposal, agreement or action made in opposition to adoption of the Merger Agreement or in competition or inconsistent with the Mergers or matters contemplated by the Merger Agreement and (ii) any action that
could reasonably be expected to impede, interfere with, delay, discourage, postpone or adversely affect the Mergers or any of the other transactions contemplated by the Merger Agreement or this Agreement or any transaction that results in a breach
in any material respect of any covenant, representation or warranty or other obligation or agreement of the Company or any of its Subsidiaries (including Opco LLC) under the Merger Agreement. 

Any attempt by the Holder to vote, consent or express dissent with respect to (or otherwise to utilize the voting power of) the Covered
Securities in contravention of this Section 3.1 shall be null and void ab initio. If the Holder is the Beneficial Owner, but not the holder of record, of any Covered Securities, the Holder agrees to take all actions
necessary to cause the holder of record and any nominees to vote (or exercise a consent with respect to) all of such Covered Securities in accordance with this Section 3.1. 

Notwithstanding anything herein to the contrary in this Agreement, this Section 3.1 shall not require the
Holder to be present (in person or by proxy) or vote (or cause to be voted), any of the Covered Securities to amend, modify or waive any provision of the Merger Agreement in a manner that reduces the amount or changes the form of the Merger
Consideration payable or imposes any material restrictions on or additional material conditions on the payment of the Merger Consideration or extends the Outside Date. Notwithstanding anything to the contrary in this Agreement, the Holder shall
remain free to vote (or execute consents or proxies with respect to) the Covered Securities with respect to any matter other than as set forth in Section 3.1(a) and Section 3.1(b) in any manner the
Holder deems appropriate, including in connection with the election of directors of the Company. 

  
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 3.2 Proxy. The Holder hereby irrevocably appoints as its proxy and attorney-in-fact, Parent, the executive officers of Parent and any person designated in writing by Parent, each of them individually, with full power of substitution and
resubstitution, to consent to or vote the Covered Securities as indicated in Section 3.1 above. The Holder intends this proxy to be irrevocable and unconditional during the term of this Agreement prior to the earlier of the
Termination Date and the Effective Time and coupled with an interest and will take such further action or execute such other instruments as may be reasonably necessary to effect the intent of this proxy, and hereby revokes any proxy previously
granted by the Holder with respect to the Covered Securities (and the Holder hereby represents that any such proxy is revocable). The proxy granted by the Holder shall be automatically revoked upon the earlier of the Termination Date and the
Effective Time and Parent may further terminate this proxy at any time at its sole election by written notice provided to the Holder. 

ARTICLE IV 
 ADDITIONAL
AGREEMENTS 
 4.1 Waiver of Appraisal Rights; Litigation. Unless (a) this Agreement is terminated in accordance with its
terms or pursuant to Section 6.5 or (b) the Merger Agreement is amended in a manner that reduces the amount or changes the form of the Merger Consideration payable or imposes any material restrictions on or additional material
conditions on the payment of the Merger Consideration or extends the Outside Date, in each case without the consent of the Holder, to the fullest extent permitted by Law, the Holder hereby irrevocably and unconditionally waives, and agrees not to
exercise, any rights of appraisal (including under Section 262 of the DGCL) relating to the Mergers that the Holder may have by virtue of the ownership of any Covered Securities. The Holder further agrees not to commence, join in, and agrees to
take all actions necessary to opt out of any class in any class action with respect to, any claim, derivative or otherwise, against Parent, Merger Sub Inc., Merger Sub LLC, Opco Merger Sub LLC, Opco LLC, or the Company or any of their respective
Affiliates and each of their successors or directors relating to the negotiation, execution or delivery of this Agreement or the Merger Agreement or the consummation of the transactions contemplated hereby or thereby, including any claim
(a) challenging the validity of, or seeking to enjoin the operation of, any provision of this Agreement or the Merger Agreement (including any claim seeking to enjoin or delay the Closing) or (b) alleging a breach of any fiduciary duty of
the Company Board in connection with the negotiation and entry into the Merger Agreement or the transactions contemplated thereby, and hereby irrevocably waives any claim or rights whatsoever with respect to any of the foregoing. 

4.2 Lock-Up. During the period commencing on the Closing Date and continuing for 180 days after
the Closing Date (the “Lock-Up Period”), the Holder shall not, with respect to any shares of common stock, par value $0.01 per share, of Parent (the “Parent Common Stock”)
issued pursuant to the terms of the Merger Agreement that are Beneficially Owned by the Holder (such shares of Parent Common Stock, the “Lock-Up Shares”), (a) offer, pledge, sell, contract to
sell, grant any option, right or warrant to purchase, give, assign, hypothecate, pledge, encumber, grant a security interest in, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to
purchase, lend or otherwise transfer or dispose of (including through any hedging or other similar transaction) any economic, voting or other rights in or to the Lock-Up Shares, or otherwise transfer or
dispose of, directly or 

  
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indirectly, or (b) enter into any swap or other agreement that transfers, in whole or in part, any of the economic consequences of ownership of the
Lock-Up Shares (any such transaction described in clause (a) or (b) above, a “Lock-Up Share Transfer”). Notwithstanding the foregoing, (i) the
restrictions set forth in this Section 4.2 shall not apply to (A) any Lock-Up Share Transfer to one or more Affiliates of the Holder (1) who is a party to an agreement with Parent with
substantially similar terms as this Section 4.2 or (2) if, as a condition to such Lock-Up Share Transfer, the recipient agrees in writing to be bound by this Section 4.2 and delivers a copy of
such executed written agreement to Parent prior to the consummation of such transfer, (B) any Lock-Up Share Transfer with the prior written consent of Parent (which consent may be granted or withheld by
Parent in its sole discretion), or (C) any Lock-Up Share Transfer made in connection with any tender offer, exchange offer, merger, consolidation or other similar transaction approved or recommended by
the Parent Board or a committee thereof; (ii) the Holder may, during the first 90 days following the Closing Date, engage in one or more Lock-Up Share Transfers so long as, following any such Lock-Up Share Transfer, the Holder continues to Beneficially Own 85% of the Lock-Up Shares; and (iii) the Holder may, during the period beginning on the 91st day after the Closing Date and ending on the last day of the Lock-Up Period, engage in one or more Lock-Up Share
Transfers so long as, following any such Lock-Up Share Transfer, the Holder continues to Beneficially Own 70% of the Lock-Up Shares; and (iv) the restrictions set
forth in this Section 4.2 shall be subject to, and the rights of Parent to enforce this Section 4.2 shall be subordinate to, the rights of Credit Suisse AG pursuant to the terms of that certain Third Amended and Restated Demand Promissory
Note and Collateral Agreement, dated as of February 26, 2019, by and among the Holder, Sharoll Sheffield and Credit Suisse AG, as amended prior to the date of this Agreement, in all respects. In connection with any Lock-Up Share Transfer pursuant to clause (i) of this Section 4.2, Parent agrees to not take any action that would cause such Lock-Up Share Transfer to be subject to
requirements imposed by any “fair price,” “moratorium,” “control share acquisition,” “business combination” or any other anti-takeover statute or similar statute enacted under applicable Law (“Takeover
Laws”), and, at the request of the Holder, will take all reasonable steps within its control to exempt (or ensure the continued exemption of) such Lock-Up Share Transfer from the Takeover Laws of any
state that purport to apply to such transaction. 
 4.3 Further Assurances. The Holder agrees that, during the term of this
Agreement, the Holder shall and shall cause such Holder’s controlled Affiliates to take no action that would reasonably be expected to adversely affect or delay the ability to perform the Holder’s respective covenants and agreements under
this Agreement. 
 4.4 Fiduciary Duties. The Holder is entering into this Agreement solely in such Holder’s capacity as the
record or Beneficial Owner of the Covered Securities and nothing herein is intended to or shall limit or affect any actions taken by the Holder or any of the Holder’s designees, as applicable, serving in his or her capacity as a director or
officer of the Company (or a Subsidiary of the Company). The taking of any actions (or failures to act) by the Holder or the Holder’s designees, as applicable, serving as a director or officer of the Company or a Subsidiary of the Company (in
such capacity as a director or officer) shall not be deemed to constitute a breach of this Agreement. 

  
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 ARTICLE V 

REPRESENTATIONS AND WARRANTIES OF HOLDER 

5.1 Representations and Warranties. The Holder hereby represents and warrants as follows: 

(a) Ownership. The Holder has, with respect to the Covered Securities, and at all times during the term of this Agreement will continue
to have, Beneficial Ownership of, good and valid title to and full and exclusive power to vote, issue instructions with respect to the matters set forth in Article III, agree to all of the matters set forth in this Agreement and to Transfer
the Covered Securities. The Covered Securities constitute all of the shares of Company Class A Common Stock, Company Class B Common Stock and Opco LLC Units owned of record or Beneficially Owned by the Holder as of the date hereof, and all
of the Covered Securities are held by the Holder free and clear of all Liens, other than any Permitted Liens. Other than this Agreement and any Permitted Liens, (i) there are no agreements or arrangements of any kind, contingent or otherwise,
to which the Holder is a party obligating the Holder to Transfer or cause to be Transferred to any person any of the Covered Securities and (ii) no Person has any contractual or other right or obligation to purchase or otherwise acquire any of
the Covered Securities. 
 (b) Organization; Authority. The Holder is an individual with full power and authority and is duly
authorized to make, enter into and carry out the terms of this Agreement and to perform the Holder’s obligations hereunder. This Agreement has been duly and validly executed and delivered by the Holder and (assuming due authorization, execution
and delivery by Parent) constitutes a valid and binding agreement of the Holder, enforceable against the Holder in accordance with its terms (except in all cases as such enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar Laws affecting creditors’ rights generally and by general principles of equity (regardless of whether considered in a proceeding in equity or at law)), and no other action is necessary to authorize the
execution and delivery by the Holder or the performance of the Holder’s obligations hereunder. 
 (c) No Violation. The
execution, delivery and performance by the Holder of this Agreement will not (i) violate any provision of any Law applicable to the Holder; (ii) violate any order, judgment or decree applicable to the Holder or any of its Affiliates; or
(iii) conflict with, or result in a breach or default under, any agreement or instrument to which the Holder or any of its Affiliates is a party, except where such conflict, breach or default would not reasonably be expected to, individually or
in the aggregate, have an adverse effect on the Holder’s ability to satisfy the Holder’s obligations hereunder. 
 (d) Consents
and Approvals. The execution and delivery by the Holder of this Agreement, and the performance of the Holder’s obligations hereunder, do not require the Holder or any of its Affiliates to obtain any consent, approval, authorization or
permit of, or to make any filing with or notification to, any person or Governmental Entity, except such filings and authorizations as may be required under the Exchange Act. 

(e) Absence of Litigation. To the knowledge of the Holder, as of the date hereof, there is no action, suit, investigation, complaint or
other proceeding pending against, or threatened in writing against the Holder that would prevent the performance by the Holder of its obligations under this Agreement on a timely basis. 

  
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 (f) Absence of Other Voting Agreements. Except as contemplated by this Agreement, the
Holder (i) has not entered into, and shall not enter into at any time prior to the earlier of the Termination Date and the Effective Time, any voting agreement or voting trust with respect to the Covered Securities and (ii) has not
granted, and shall not grant at any time prior to earlier of the Termination Date and the Effective Time, a proxy or power of attorney with respect to the Covered Securities, in either case, which is inconsistent with the Holder’s obligations
pursuant to this Agreement. Other than with respect to any Permitted Liens, none of the Covered Securities are subject to any pledge agreement pursuant to which the Holder does not retain sole and exclusive voting rights with respect to the Covered
Securities subject to such pledge agreement at least until the occurrence of an event of default under the related debt instrument. 

ARTICLE VI 

MISCELLANEOUS 
 6.1 No
Solicitation. The Holder agrees that such Holder shall not, and shall not permit or authorize any of such Holder’s controlled Affiliates and shall use commercially reasonable efforts to not permit or authorize any of such Holder’s or
such Holder’s controlled Affiliates’ Representatives to, directly or indirectly, take any of the actions listed in clauses (i) or (ii) of Section 5.2(a) of the Merger Agreement (without giving effect to any amendment or
modification of such clauses after the date hereof). The Holder shall, and shall cause such Holder’s controlled Affiliates and shall use commercially reasonable efforts to cause such Holder’s and such Holder’s controlled
Affiliates’ Representatives to, immediately cease and cause to be terminated all existing discussions and negotiations with any Person conducted heretofore with respect to any Acquisition Proposal or potential Acquisition Proposal. In addition,
the Holder agrees to be subject to Section 5.2(e) of the Merger Agreement (without giving effect to any amendment or modification of such clauses after the date hereof) as if the Holder were the “Company” thereunder. Notwithstanding
the foregoing, to the extent the Company complies with its obligations under Section 5.2 of the Merger Agreement and participates in discussions or negotiations with a Person regarding an Acquisition Proposal, the Holder or any of such
Holder’s controlled Affiliates and/or such Holder’s and such Holder’s controlled Affiliates’ Representatives may engage in discussions or negotiations with such Person to the extent that the Company can act under Section 5.2
of the Merger Agreement. 
 6.2 Non-Recourse. This Agreement may only be enforced against,
and any claim or cause of action based upon, arising out of, or related to this Agreement or the transactions contemplated by this Agreement may only be brought against, the entities that are expressly named as parties hereto and then only with
respect to the specific obligations set forth herein with respect to such party. Except to the extent a named party to this Agreement (and then only to the extent of the specific obligations undertaken by such named party in this Agreement and not
otherwise), no past, present or future, director, manager, officer, employee, incorporator, member, partner, equityholder, Affiliate, agent, attorney, advisor, consultant or Representative or Affiliate of any of the foregoing (each, a
“Holder Related Party”) shall have any liability (whether in contract, tort, equity or otherwise) for any one or more of the representations, warranties, covenants, agreements or other obligations or liabilities of or made under
this 

  
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Agreement or in respect of any oral representations made or alleged to have been made in connection herewith (whether for indemnification or otherwise) or of or for any claim based on, arising
out of, or related to this Agreement or the transactions contemplated by this Agreement. Parent acknowledges that no Holder nor any Holder Related Party has made, and Parent has not relied upon, any representation related to the matters contemplated
by this Agreement, except as set forth in Article V. 
 6.3 No Ownership Interest. Nothing contained in this Agreement shall
be deemed to vest in Parent any direct or indirect ownership or incidence of ownership of or with respect to the Covered Securities. All rights, ownership and economic benefits of and relating to the Covered Securities shall remain vested in and
belong to the Holder, and Parent shall not have any authority to manage, direct, restrict, regulate, govern or administer any of the policies or operations of the Company or Opco LLC or exercise any power or authority to direct the Holder in the
voting or disposition of any Covered Securities, except as otherwise expressly provided herein. 
 6.4 Disclosure. The Holder
consents to and authorizes the publication and disclosure by the Company and Parent of the Holder’s identity and holding of Covered Securities, and the terms of this Agreement (including, for avoidance of doubt, the disclosure of this
Agreement), in any press release, the Form S-4, the Joint Proxy Statement and any other disclosure document required in connection with this Agreement, the Merger Agreement, the Mergers and the transactions
contemplated by the Merger Agreement. 
 6.5 Termination. This Agreement shall terminate upon the date the Merger Agreement is
validly terminated in accordance with its terms (such date, the “Termination Date”). Neither the provisions of this Section 6.5 nor the termination of this Agreement shall relieve (x) any party hereto
from any liability of such party to any other party incurred prior to such termination or (y) any party hereto from any liability to any other party arising out of or in connection with a breach of this Agreement. Nothing in the Merger
Agreement shall relieve the Holder from any liability arising out of or in connection with a breach of this Agreement. 
 6.6
Amendment. This Agreement may not be amended, modified or supplemented in any manner, whether by course of conduct or otherwise, except by an instrument in writing specifically designated as an amendment hereto, signed on behalf of each party
hereto. 
 6.7 Reliance. The Holder understands and acknowledges that Parent is entering into the Merger Agreement in reliance upon
the Holder’s execution and delivery of this Agreement. 
 6.8 Extension; Waiver. The parties hereto may, to the extent permitted
by applicable Law: 
 (a) extend the time for the performance of any of the obligations or acts of the other party hereunder; 

(b) waive any inaccuracies in the representations and warranties of the other party contained herein or in any document delivered pursuant
hereto; or 

  
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 (c) waive compliance with any of the agreements or conditions of the other party contained
herein; 
 provided, however, that, in each case, such waiver is made in writing and signed by the party (or parties) against whom the waiver
is to be effective. 
 Notwithstanding the foregoing, no failure or delay by Parent in exercising any right hereunder shall operate as a waiver thereof nor
shall any single or partial exercise thereof preclude any other or further exercise of any other right hereunder. No agreement on the part of a party hereto to any such extension or waiver shall be valid unless set forth in an instrument in writing
signed on behalf of such party. No waiver by any of the parties hereto of any default, misrepresentation or breach of representation, warranty, covenant or other agreement hereunder, whether intentional or not, shall be deemed to extend to any prior
or subsequent default, misrepresentation or breach or affect in any way any rights arising by virtue of any prior or subsequent such occurrence. 

6.9 Expenses. All fees and expenses incurred in connection with this Agreement and the transactions contemplated hereby shall be paid
by the party incurring such fees or expenses, whether or not the Mergers are consummated. 
 6.10 Notices. All notices and other
communications hereunder shall be in writing and shall be deemed duly given (a) on the date of delivery if delivered personally, or if by e mail, upon written confirmation of receipt by e mail or otherwise; provided, that each notice
party shall use reasonable best efforts to confirm receipt of any such email correspondence promptly upon receipt of such request, (b) on the first Business Day following the date of dispatch if delivered utilizing a next-day service by a recognized next-day courier or (c) on the earlier of confirmed receipt or the fifth Business Day following the date of mailing if delivered by
registered or certified mail, return receipt requested, postage prepaid. All notices hereunder shall be delivered to the addresses set forth below, or pursuant to such other instructions as may be designated in writing by the party to receive such
notice: 
 if to the Holder, to: 

Bryan Sheffield 
 Marbella
Interests, LLC 
 303 Colorado St. Ste. 2050 Austin, TX 78701 

Attn: Dan Ferreri 
 Email:
dferreri@marbellainterests.com 
 and if to Parent, to: 

Pioneer Natural Resources Company 

777 Hidden Ridge 
 Irving, Texas
75038 
 Attention: Mark H. Kleinman 

E-mail: mark.kleinman@pxd.com 

  
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 With a copy (which shall not constitute notice) to: 

Gibson, Dunn & Crutcher LLP 

2001 Ross Avenue, Suite 2100 

Dallas, Texas 75201 
 Attention:
Jeffrey A. Chapman; Tull R. Florey 
 E-mail: jchapman@gibsondunn.com; tflorey@gibsondunn.com 

6.11 Interpretation. When a reference is made in this Agreement to a Section or Article, such reference shall be to a Section or
Article of this Agreement unless otherwise indicated. The words “this Section,” “this subsection” and words of similar import, refer only to the Sections or subsections hereof in which such words occur. The headings contained in
this Agreement are for convenience of reference purposes only and shall not affect in any way the meaning or interpretation of this Agreement. All words used in this Agreement will be construed to be of such gender or number as the circumstances
require. The word “including” and words of similar import when used in this Agreement will mean “including, without limitation,” unless otherwise specified. The words “hereof,” “herein” and
“hereunder” and words of similar import when used in this Agreement shall refer to the Agreement as a whole and not to any particular provision in this Agreement. The term “or” is not exclusive. The word “will” shall be
construed to have the same meaning and effect as the word “shall. The word “extent” in the phrase “to the extent” shall mean the degree to which a subject or other thing extends and such phrase shall not mean simply
“if.” References to “days” mean calendar days; when calculating the period of time within which, or following which, any act is to be done or step taken pursuant to this Agreement, the date that is the reference day in
calculating such period shall be excluded and if the last day of the period is a non-Business Day, the period in question shall end on the next Business Day or if any action must be taken hereunder on or by a
day that is not a Business Day, then such action may be validly taken on or by the next day that is a Business Day. References to an “Affiliate” of any Person mean any other Person that directly or indirectly, through one or more
intermediaries, controls, is controlled by, or is under common control with, such first Person; provided, however, that solely for purposes of this Agreement, notwithstanding anything to the contrary set forth herein, neither the
Company nor any of its Subsidiaries shall be deemed to be an Affiliate of the Holder. 
 6.13 No Presumption Against Drafting Party.
Each of the parties hereto acknowledges that each party to this Agreement has been represented by counsel in connection with this Agreement and the transactions contemplated hereby. Accordingly, any rule of Law or any legal decision that would
require interpretation of any claimed ambiguities in this Agreement against the drafting party has no application and is expressly waived. 

6.14 Counterparts. This Agreement may be executed in two or more counterparts, all of which shall be considered one and the same
instrument and shall become effective when one or more counterparts have been signed by each of the parties hereto and delivered to the other party. 

6.15 No Partnership, Agency or Joint Venture. This Agreement is intended to create, and creates, a contractual relationship and is not
intended to create, and does not create, any agency, partnership, joint venture, any like relationship between the parties hereto or a presumption that the parties hereto are in any way acting in concert or as a group with respect to the obligations
or the transactions contemplated by this Agreement. 

  
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 6.16 No Third-Party Beneficiaries. Nothing in this Agreement, express or implied, is
intended to or shall confer upon any Person other than the parties hereto and their respective successors and permitted assigns any legal or equitable right, benefit or remedy of any nature under or by reason of this Agreement. 

6.17 Entire Agreement. This Agreement, the Merger Agreement, the Company Disclosure Letter, the Parent Disclosure Letter, the TRA
Amendment and the Confidentiality Agreement constitute the entire agreement, and supersede all prior written agreements, arrangements, communications and understandings and all prior and contemporaneous oral agreements, arrangements, communications
and understandings among the parties hereto with respect to the subject matter hereof and thereof. 
 6.18 Governing Law; Venue; Waiver
of Jury Trial. 
 (a) This Agreement and all disputes or controversies arising out of or relating to this Agreement or the transactions
contemplated hereby shall be governed by, and construed in accordance with, the internal Laws of the State of Delaware, without regard to the Laws of any other jurisdiction that might be applied because of the conflicts of Laws principles of the
State of Delaware. 
 (b) Each of the parties hereto irrevocably agrees that any legal action or proceeding arising out of or relating to
this Agreement brought by any party or its Affiliates against any other party or its Affiliates shall be brought and determined in the Court of Chancery of the State of Delaware, provided that if jurisdiction is not then available in the Court of
Chancery of the State of Delaware, then any such legal action or proceeding may be brought in any federal court located in the State of Delaware. Each of the parties hereto hereby irrevocably submits to the jurisdiction of the aforesaid courts for
itself and with respect to its property, generally and unconditionally, with regard to any such action or proceeding arising out of or relating to this Agreement and the transactions contemplated hereby. Each of the parties hereto agrees not to
commence any action, suit or proceeding relating thereto except in the courts described above in Delaware, other than actions in any court of competent jurisdiction to enforce any judgment, decree or award rendered by any such court in Delaware as
described herein. Each of the parties hereto further agrees that notice as provided herein shall constitute sufficient service of process, and the parties further waive any argument that such service is insufficient. Each of the parties hereto
hereby irrevocably and unconditionally waives, and agrees not to assert, by way of motion or as a defense, counterclaim or otherwise, in any action or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby,
(i) any claim that it is not personally subject to the jurisdiction of the courts in Delaware as described herein for any reason, (ii) that it or its property is exempt or immune from jurisdiction of any such court or from any legal
process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment in aid of execution of judgment, execution of judgment or otherwise) and (iii) that (A) the suit, action or proceeding in any such
court is brought in an inconvenient forum, (B) the venue of such suit, action or proceeding is improper or (C) this Agreement, or the subject matter hereof, may not be enforced in or by such courts. 

  
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 (c) EACH OF THE PARTIES TO THIS AGREEMENT HEREBY IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY
JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

6.19 Assignment. Neither this Agreement nor any of the rights, interests or obligations under this Agreement may be assigned or
delegated, in whole or in part, by operation of law or otherwise, by either party without the prior written consent of the other party, and any such assignment without such prior written consent shall be null and void; provided,
however, that Parent may assign all or any of its rights and obligations hereunder to any direct or indirect Subsidiary of Parent; provided further, that no assignment shall limit the assignor’s obligations hereunder.
Subject to the preceding sentence and except as set forth in Article II, this Agreement will be binding upon, inure to the benefit of, and be enforceable by, the parties and their respective successors and assigns. 

6.20 Specific Performance. The parties hereto agree that irreparable damage would occur in the event that the parties do not perform
the provisions of this Agreement in accordance with its terms or otherwise breach such provisions. Accordingly, prior to any termination of this Agreement pursuant to Section 6.5, the parties hereto acknowledge and agree
that each party shall be entitled to an injunction, specific performance and other equitable relief to prevent breaches of this Agreement and to enforce specifically the terms and provisions hereof in the Court of Chancery of the State of Delaware,
provided, that if jurisdiction is not then available in the Court of Chancery of the State of Delaware, then in any federal court located in the State of Delaware, this being in addition to any other remedy to which such party is entitled at
law or in equity. Each party hereto accordingly agrees (a) the non-breaching party will be entitled to injunctive and other equitable relief, without proof of actual damages; and (b) the alleged
breaching party will not raise any objections to the availability of the equitable remedy of specific performance to prevent or restrain breaches or threatened breaches of, or to enforce compliance with, the covenants and obligations of such party
under this Agreement and will not plead in defense thereto that there are adequate remedies at Law, all in accordance with the terms of this Section 6.20. Each party hereto further agrees that no other party or any other
Person shall be required to obtain, furnish or post any bond or similar instrument in connection with or as a condition to obtaining any remedy referred to in this Section 6.20, and each party irrevocably waives any right
it may have to require the obtaining, furnishing or posting of any such bond or similar instrument. 
 6.21 Severability. Whenever
possible, each provision or portion of any provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable Law, but if any provision or portion of any provision of this Agreement is held to be invalid,
illegal or unenforceable in any respect under any applicable Law or rule in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other provision or portion of any provision in such jurisdiction, and this Agreement
shall be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision or portion of any provision had never been contained herein. 

  
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 6.22 Delivery by Facsimile or Electronic Transmission. This Agreement may be executed
by facsimile or .pdf signature and a facsimile or .pdf signature shall constitute an original for all purposes. 
 [Signature Page
Follows] 

  
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 IN WITNESS WHEREOF, the parties hereto, intending to be legally bound hereby, have executed
or caused this Agreement to be executed in counterparts, all as of the day and year first above written. 
  

			
	PIONEER NATURAL RESOURCES COMPANY
		
	By:	 	 /s/ Richard P. Dealy

	Name:	 	Richard P. Dealy
	Title:	 	Executive Vice President and Chief Financial Officer


 [Signature Page to the Voting and Support Agreement] 












 
			
	HOLDER:
		
	By:	 	 /s/ Bryan Sheffield

	Name:	 	Bryan Sheffield, an individual


 [Signature Page to the Voting and Support Agreement]