EX-10.10



 Exhibit 10.10 

PARSLEY ENERGY OPERATIONS, LLC 

EMPLOYMENT, CONFIDENTIALITY, AND NON-COMPETITION AGREEMENT 

For good and valuable consideration set forth herein, this Employment, Confidentiality, and Non-Competition Agreement
(“Agreement”) is executed as of the date set forth below and effective upon the closing of the initial public offering of Parsley Energy, Inc., a corporation organized under the laws of the State of Delaware (“Parsley
Inc.”) (the “Effective Date”), by and between: (i) Parsley Energy Operations, LLC (“Parsley”) and (ii) Matthew Gallagher, a natural person (“Employee”) (Employee and
Parsley each a “Party” and collectively “Parties” herein). In the event the initial public offering of Parsley Inc. does not close on or before the two-year anniversary of the date this Agreement is executed by the
Parties, this Agreement shall never become effective and shall have no force or effect. 
 PREAMBLE 

WHEREAS, Parsley and Employee entered into an employment, confidentiality, and non-competition agreement on June 26, 2013 (the
“Prior Agreement”); 
 WHEREAS, in connection with and as a result of the restructuring of Parsley and its
affiliates, and the creation and initial public offering of Parsley Inc., the Parties believe it is appropriate to cancel the Prior Agreement and enter into this Agreement; 

WHEREAS, in the course of Employee’s employment, Parsley will provide Employee with internal confidential information,
commercially obtained information, research resources, and other valuable and proprietary materials. Further, Employee’s position will be to develop and obtain such confidential information for the benefit of Parsley and its affiliates and
subsidiaries (the “Parsley Group” and each individual entity, a “member of the Parsley Group”). This information will include trade secrets, and other confidential information, including, without limitation,
strategic goals and plans of Parsley or another member of the Parsley Group, employment information, geophysical data, engineering data and compilations, well logs, well production records, well files and the like. 

THEREFORE, the Parties agree as follows: 
  

	I.	EMPLOYMENT AGREEMENT 

 1.01 Initial Term. The Parties agree that this Agreement
hereby cancels and supersedes the Prior Agreement. The term of this Agreement shall begin on the Effective Date and continue for a period of one year (the “Initial Term”) unless earlier terminated pursuant to this Section 1,
provided that, on such one-year anniversary of the Effective Date, and each annual anniversary thereafter (such date and each annual anniversary thereof, a “Renewal Date”), the term of this Agreement shall be deemed to be
automatically extended, upon the same terms and conditions, for successive periods of one year, unless either of the Parties provides written notice of its intention not to extend the term of the Agreement at least 60 days prior to the applicable
Renewal Date. The Initial Term and all periods beyond the Initial Term while this Agreement remains in effect shall collectively be referred to herein as the “Term.” 

1.02 Base Salary. During the Term, Parsley will pay Employee a base salary of at least $263,000 per year, in periodic installments in
accordance with Parsley’s customary payroll practices as may exist from time to time, but no less frequently than monthly. During the Term, Parsley may not decrease Employee’s salary below the base salary enumerated in this
Section 1.02, but may, in Parsley’s sole discretion, increase Employee’s salary as it sees fit from time to time. Employee’s annual base salary, as in effect from time to time, is hereinafter referred to as Employee’s
“Base Salary.” 

  

			
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 1.03 Bonus. Employee shall be eligible to earn an annual bonus (the “Annual
Bonus”). However, the decision to provide any Annual Bonus and the amount and terms of any Annual Bonus shall be in the sole and absolute discretion of the Compensation Committee (the “Compensation Committee”) of the Board
of Directors of Parsley (the “Board”). For the avoidance of doubt, Employee shall not be entitled to any Annual Bonus if Employee is not employed by Parsley on the date any such Annual Bonus is paid. 

1.04 Benefits. At all times during Employee’s employment with Parsley, Employee will be entitled to all other benefits and
conditions of employment generally available to employees of Parsley of the same level and responsibility. Furthermore, Parsley shall pay all costs (including all reasonable costs associated with travel and lodging) for Employee to obtain a
bi-annual physical examination at the Cooper Clinic in Dallas, Texas. 
 1.05 Duties. During Employee’s employment, Employee
agrees to serve as Vice President, Engineering and Geoscience and in such other position(s) as the Employee’s supervisor and Employee shall mutually agree. Employee will have the duties that are normally required of an employee of
Employee’s same level and responsibility in the exploration and production business and agrees to perform diligently and to the best of Employee’s abilities the duties and services appertaining to such position(s), as well as such
additional duties and services which may be designated by Parsley or other members of the Parsley Group, at Parsley’s discretion, from time to time. Employee will also, at the reasonable discretion and request of Parsley, advise and assist in
other ways to further the business of the Parsley Group, as may be requested. Initially, Employee shall report to and be subject to the supervision and direction of Parsley’s Chief Executive Officer. 

1.06 Place of Work. Employee shall perform Employee’s services at an office, space for which will be furnished by Parsley at
Parsley’s principal office in Midland, Texas, or such other location to which Parsley relocates its principal office. If Employee is required to travel, Parsley agrees to reimburse Employee in accordance with Parsley’s expense
reimbursement policy in effect from time to time. 
 1.07 No Privacy on Electronic Systems. Employee agrees and understands that the
computer and email services provided by the Parsley Group are for the purpose of conducting work for the Parsley Group alone. Employee agrees and stipulates that Employee shall have no expectation of privacy with regard to emails or computer files
on, or sent to or from, the computers or servers of the Parsley Group or otherwise made available to Employee through Employee’s employment with Parsley. 

1.08 Employee Resources. Parsley agrees to pay for memberships, seminars, professional meetings and/or professional publications needed
for the continuing development of prospects and education of Employee, but only as the same are pre-approved by Parsley in Parsley’s sole and absolute discretion. 

1.09 Full-Time Employee. While employed by Parsley, Employee agrees to devote Employee’s entire and full-time productive ability
and attention to the business of Parsley, provided that Employee may engage in passive personal investment and charitable activities that do not Compete (as defined below) with the business and affairs of Parsley or interfere with Employee’s
performance of Employee’s duties hereunder. Employee warrants and agrees to not, directly or indirectly, render any services of a business, commercial, or professional nature to any other person or organization, including self-employment,
without the prior written consent of Parsley. Employee warrants and agrees that Employee will not render any services as either an employee or independent consultant to any person or entity that is in competition with Parsley or, while employed,
prepare or establish a business that would result in a breach of Employee’s non-compete restrictions set forth in Section 3.03. 

  

			
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 1.10 Fiduciary Duties of Employee. At all times while an employee of Parsley, Employee
warrants and agrees that Employee will perform and discharge the duties of Employee’s position fully and faithfully and to the best of Employee’s abilities. Employee agrees Employee shall owe Parsley, and hereby voluntarily assumes, a duty
of loyalty and utmost good faith; a duty of candor; a duty to refrain from any self-dealing; a duty to act with integrity of the strictest kind; a duty of fair and honest dealing; a duty of full disclosure, that is, a duty not to conceal matters
that might influence Employee’s actions to Parsley’s prejudice; and any other and further duties imposed by law on employees to their employers, and specifically including under this Agreement a covenant not to solicit fellow Parsley
employees for future employment, as set forth in Section 3.04. 
 1.11 Reporting Requirement. During the course of
Employee’s employment with Parsley, Employee agrees that, if Employee learns or even suspects that any fellow employee is, or may be, breaching Employee’s fiduciary duties to Parsley, Employee agrees to alert Parsley promptly. Employee
understands that this is a broad and general obligation in light of the difficulty to anticipate all possible circumstances. If Employee is in doubt, Employee agrees to resolve Employee’s doubts by reporting to Parsley the information that has
come to Employee’s attention. 
 1.12 Corporate Opportunities. During Employee’s employment with Parsley, in the event that
Employee, in Employee’s individual capacity, shall be presented with, or made aware of, any commercial proposal, prospect, solicitation, deal, transaction or opportunity relating to the oil and gas business (“New Business
Opportunity”), Employee shall immediately notify and present the terms and conditions of such New Business Opportunity to Employee’s superiors at Parsley; whether or not any member of the Parsley Group elects to take advantage of such
New Business Opportunity, Employee shall not present such New Business Opportunity to any person or entity other than the Parsley Group. 

1.13 Termination by Non-Renewal, by Parsley for Cause or by Employee without Good Reason. Employee’s employment hereunder may be
terminated by (x) the provision of notice by either of the Parties that they do not wish to renew the Term on the next Renewal Date in accordance with Section 1.01 and shall terminate the employment relationship between the Parties on such
date, (y) by Parsley for Cause, or (z) by Employee without Good Reason. If Employee’s employment is terminated for any of the reasons enumerated in this Section 1.13 then Employee shall be entitled to receive: (i) any
accrued but unpaid Base Salary, which shall be paid, unless otherwise required by law, on the pay date immediately following the date of Employee’s termination of employment in accordance with Parsley’s customary payroll procedures;
(ii) reimbursement for unreimbursed business expenses properly incurred by Employee, which shall be subject to and paid in accordance with Parsley’s expense reimbursement policy in effect from time to time; and (iii) such employee
benefits (including equity compensation), if any, as to which Employee may be entitled under Parsley’s employee benefit plans as of the date of Employee’s termination of employment; provided that, in no event shall Employee be entitled to
any payments in the nature of severance payments except as specifically provided herein (items (i) through (iii), the “Accrued Obligations”). If Employee’s employment is terminated for any of the reasons enumerated in this
Section 1.13 then Parsley will not be obligated to make any payments other than the Accrued Obligations under this Agreement and, except as otherwise provided in the award agreement under which the award was granted, Employee will forfeit all
unvested outstanding equity awards held by Employee as of the date of Employee’s termination of employment. 
 “Cause” shall mean:
(i) violation of Parsley’s substance abuse policy; (ii) refusal or inability (other than by reason of death or Disability) to perform the duties assigned to Employee; (iii) acts or omissions evidencing a violation of
Employee’s duties of loyalty and good faith; candor; fair and honest dealing; integrity; or full disclosure to Parsley, as well as any acts or omissions which constitute self-dealing; (iv) willful disobedience of lawful orders, policies,
regulations, or directives issued to Employee by Parsley, including policies related to sexual harassment, discrimination, computer use or the like; (v) conviction or commission of a felony, a crime of moral turpitude, or a crime that could
reasonably be expected to impair the ability of Employee to perform Employee’s job duties; (vi) breach of any part of this 

  

			
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Agreement by Employee; (vii) revocation or suspension of any necessary license or certification; (viii) generation of materially incorrect financial, geological, seismic or engineering
projections, compilations or reports; or (ix) a false statement by Employee to obtain this position, in each case as determined by the Board in good faith and in its sole and absolute discretion. For purposes of clarity, “Cause” shall
not mean termination of Employee’s employment for death or Disability, which shall be governed by Section 1.15. 
 1.14
Termination by Employee for Good Reason or Termination by Parsley without Cause. Employee’s employment hereunder may be terminated by Employee for Good Reason or by Parsley without Cause. If Employee’s employment is terminated by
Employee for Good Reason or by Parsley without Cause then Employee shall be entitled to receive (i) the Accrued Obligations, (ii) provided that Employee has fulfilled the Severance Conditions (as defined below), a cash payment equal to
1.25 times the sum of (A) Employee’s Base Salary and (B) the average of the three most recent Annual Bonuses actually paid in the three-year period preceding the date of Employee’s termination (or the period of Employee’s
employment, if shorter) which amount shall be paid in a lump-sum on the first business day following the Release Consideration Period (as defined below), (iii) during the portion, if any, of the 18-month period commencing on the date of such
termination of employment that Employee is eligible to elect and elects to continue coverage for himself and his eligible dependents under any of the Parsley Group’s group health plans, as applicable, under the Consolidated Omnibus Budget
Reconciliation Act of 1985, as amended (“COBRA”), Parsley shall promptly reimburse Employee on a monthly basis for the difference between the amount Employee pays to effect and continue such coverage and the employee contribution
amount that vice presidents of the Parsley Group pay for the same or similar coverage under such group health plans at that time, and (iv) outplacement services provided by a company of Parsley’s choosing for up to 6 months following the
date of Employee’s termination or such time as Employee obtains reasonably comparable employment, whichever occurs earlier. Except as otherwise provided in the award agreement under which the award was granted, all unvested outstanding equity
awards held by Employee upon a termination of employment without Cause or by Employee for Good Reason covered by this Section 1.14 shall be forfeited for no consideration. 

“Good Reason” shall mean (i) a material diminution in Employee’s base compensation, (ii) a material diminution in
Employee’s authority, duties, or responsibilities, or (iii) any other action or inaction that constitutes a material breach by Parsley of the Agreement, in each case, without Employee’s consent. Employee cannot terminate
Employee’s employment for Good Reason unless Employee has provided written notice to Parsley of the existence of the circumstances providing grounds for termination for Good Reason within sixty (60) days of the initial existence of such
grounds and Parsley has had at least thirty (30) days from the date on which such notice is provided to cure such circumstances. If Employee does not terminate Employee’s employment for Good Reason within 120 days after the first
occurrence of the applicable grounds, then Employee will be deemed to have waived Employee’s right to terminate for Good Reason with respect to such grounds. 

1.15 Death or Disability. Employee’s employment shall terminate automatically on the date of Employee’s death or immediately
upon Parsley’s sending Employee a notice of termination for “Disability,” which shall mean Employee’s inability to perform the essential functions of Employee’s position, with reasonable accommodation, due to an
illness or physical or mental impairment or other incapacity that continues, or can reasonably be expected to continue, for a period in excess of ninety (90) days (whether or not consecutive) during any period of three hundred sixty-five
(365) consecutive days. Upon termination of Employee’s employment for death or Disability pursuant to this Section 1.15, Parsley’s sole obligations to Employee shall be to pay (i) the Accrued Obligations and
(ii) provided that Employee or Employee’s estate, as applicable, has fulfilled the Severance Conditions, beginning on the first business day following the Release Consideration Period (the “Initial Payment Date”),
Employee’s Base Salary for the remainder of the calendar year in which death or Disability occurred, which, following the Initial Payment Date, shall be paid as and when such amounts would have been due had Employee’s employment continued
(the “Death or Disability Payment”). Any installments of the Death or Disability Payment that, in accordance with customary payroll practices, would have typically been made during the Release Consideration Period shall accumulate
and shall then be paid on the Initial Payment Date. 

  

			
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 1.16 Termination by Parsley without Cause or by Employee for Good Reason following a Change of
Control. If within the 12 months following a Change of Control Employee’s employment is terminated by Employee for Good Reason or by Parsley without Cause then Employee shall be entitled to receive (i) the Accrued Obligations,
(ii) provided that Employee has fulfilled the Severance Conditions, a cash payment equal to two times the sum of (A) Employee’s Base Salary and (B) the average of the three most recent Annual Bonuses actually paid in the
three-year period preceding the date of Employee’s termination (or the period of Employee’s employment, if shorter), which amount shall be paid in a lump-sum on the first business day following the Release Consideration Period,
(iii) during the portion, if any, of the 18-month period commencing on the date of such termination of employment that Employee is eligible to elect and elects to continue coverage for himself and his eligible dependents under any of the
Parsley Group’s group health plans, as applicable, under COBRA, Parsley shall promptly reimburse Employee on a monthly basis for the difference between the amount Employee pays to effect and continue such coverage and the employee contribution
amount that vice presidents of the Parsley Group pay for the same or similar coverage under such group health plans at that time, and (iv) outplacement services provided by a company of Parsley’s choosing for up to six months following the
date of Employee’s termination or such time as Employee obtains reasonably comparable employment, whichever occurs earlier. Except as otherwise provided in the award agreement under which the award was granted, all unvested outstanding equity
awards held by Employee upon a termination of employment without Cause or by Employee for Good Reason following a Change of Control and covered under this Section 1.16 shall be accelerated in full upon Employee’s termination of employment.

 “Change of Control” means the occurrence of any of the following events: 

(i) A “change in the ownership of the Company” which shall occur on the date that any one person, or more than one person acting as a group, acquires
ownership of stock in the Company that, together with stock held by such person or group, constitutes more than 50% of the total fair market value or total voting power of the stock of the Company; however, if any one person or more than one person
acting as a group, is considered to own more than 50% of the total fair market value or total voting power of the stock of the Company, the acquisition of additional stock by the same person or persons will not be considered a “change in the
ownership of the Company” (or to cause a “change in the effective control of the Company” within the meaning of paragraph (ii) below) and an increase of the effective percentage of stock owned by any one person, or persons acting
as a group, as a result of a transaction in which the Company acquires its stock in exchange for property will be treated as an acquisition of stock for purposes of this paragraph; provided, further, however, that for purposes of this
Section 1.16, any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the Company or any entity controlled by the Company will not constitute a Change of Control. This paragraph (i) applies only when
there is a transfer of the stock of the Company (or issuance of stock) and stock in the Company remains outstanding after the transaction. 
 (ii) A
“change in the effective control of the Company” which shall occur on the date that either (A) any one person, or more than one person acting as a group, acquires (or has acquired during the twelve month period ending on the date of
the most recent acquisition by such person or persons) ownership of stock of the Company possessing 35% or more of the total voting power of the stock of the Company, except for any acquisition by any employee benefit plan (or related trust)
sponsored or maintained by the Company or any entity controlled by the Company; or (B) a majority of the members of the Board are replaced during any twelve-month period by directors whose appointment or election is not endorsed by a majority
of the members of the Board prior to the date of the appointment or election. For purposes of a “change in the effective control of the Company,” if any one person, or more than one person acting as a group, is considered to effectively
control the Company within the meaning of this Section 1.16, the acquisition of additional control of the Company by the same person or persons is not considered a “change in the effective control of the Company,” or to cause a
“change in the ownership of the Company” within the meaning of paragraph (i) above. 

  

			
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 (iii) A “change in the ownership of a substantial portion of the Company’s assets” which shall
occur on the date that any one person, or more than one person acting as a group, acquires (or has acquired during the twelve month period ending on the date of the most recent acquisition by such person or persons) assets of the Company that have a
total gross fair market value equal to or more than 40% of the total gross fair market value of all the assets of the Company immediately prior to such acquisition or acquisitions. For this purpose, gross fair market value means the value of the
assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. Any transfer of assets to an entity that is controlled by the shareholders of the Company immediately
after the transfer, as provided in guidance issued pursuant to Section 409A (as defined below), shall not constitute a Change of Control. 
 For
purposes of the definition of Change of Control, the provisions of section 318(a) of the Internal Revenue Code (the “Code”) regarding the constructive ownership of stock will apply to determine stock ownership; provided, that, stock
underlying unvested options (including options exercisable for stock that is not substantially vested) will not be treated as owned by the individual who holds the option. In addition, for purposes of this Section 1.16, “Company”
includes (x) Parsley, (y) the entity for whom Employee performs services, and (z) an entity that is a stockholder owning more than 50% of the total fair market value and total voting power (a “Majority Shareholder”)
of Parsley or the entity identified in (y) above, or any entity in a chain of entities in which each entity is a Majority Shareholder of another entity in the chain, ending in Parsley or the entity identified in (y) above. 

1.17 Release and Compliance with this Agreement. The obligation of the Parsley Group to pay any portion of the amounts due pursuant to
Sections 1.14, 1.15, and 1.16, with the exception of the Accrued Obligations, shall be expressly conditioned on (i) Employee’s execution (and, if applicable, non-revocation) of a full general release, releasing all claims, known or
unknown, that Employee may have against the Parsley Group, including those arising out of or in any way related to Employee’s employment or termination of employment with the Parsley Group no later than the 60th day following the date of Employee’s termination of employment (such period, the “Release Consideration Period”) and (ii) continued compliance with the requirements of
Sections II and III (the “Severance Conditions”). If Employee (x) does not execute the release described above during the Release Consideration Period, or (y) breaches Section II or III of this Agreement, (i) Parsley
shall immediately cease any payments owed pursuant to Sections 1.14, 1.15, or 1.16 (other than the Accrued Obligations) but not yet paid and shall have no obligation to make any further payments to Employee pursuant to Sections 1.14, 1.15, or 1.16
and (ii) Employee shall promptly pay to Parsley (or its successor) an amount equal to any payments Employee has received pursuant to Sections 1.14, 1.15, or 1.16 (other than the Accrued Obligations) as of the time of Employee’s breach or
refusal to execute the general release (such repayment outlined in (ii) of this sentence, the “Recoupment Payment”). 

1.18 Excise Taxes. If the Compensation Committee determines, in its sole discretion, that Section 280G of the Code applies to any
compensation payable to Employee, then the provisions of this Section 1.18 shall apply. If any payments or benefits to which Employee is entitled from the Parsley Group, any successor to Parsley or another member of the Parsley Group, or any
trusts established by any of the foregoing by reason of, or in connection with, any transaction that occurs after the Effective Date (collectively, the “Payments,” which shall include, without limitation, the vesting of any equity
awards or other non-cash benefit or property) are, alone or in the aggregate, more likely than not, if paid or delivered to Employee, to be subject to the tax imposed by Section 4999 of the Code or any successor provisions to that section, then
the Payments (consistent with the requirements of Section 409A (as defined below) and beginning with any Payment to be paid in cash hereunder), shall be either (a) reduced (but not below zero) so that the present value of such total
Payments received by Employee will be one 

  

			
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dollar ($1.00) less than three times Employee’s “base amount” (as defined in Section 280G(b)(3) of the Code) and so that no portion of such Payments received by Employee shall
be subject to the excise tax imposed by Section 4999 of the Code, or (b) paid in full, whichever of (a) or (b) produces the better net after tax position to Employee (taking into account any applicable excise tax under
Section 4999 of the Code and any other applicable taxes). The determination as to whether any Payments are more likely than not to be subject to taxes under Section 4999 of the Code and as to whether reduction or payment in full of the
amount of the Payments provided hereunder results in the better net after tax position to Employee shall be made by the Board and Employee in good faith. 

1.19 Resignation. Unless otherwise agreed to in writing by Parsley and Employee prior to the termination of Employee’s employment,
any termination of Employee’s employment shall constitute, to the extent applicable: (i) an automatic resignation of Employee as an officer of each member of the Parsley Group and (ii) an automatic resignation of Employee from the
Board and the board of directors or board of managers of each member of the Parsley Group and from the board of directors or managers or similar governing body of any corporation, limited liability entity or other entity in which Parsley or another
member of the Parsley Group holds an equity interest and with respect to which board or similar governing body Employee serves as a designee or other representative for a member of the Parsley Group. 

 

	II.	CONFIDENTIALITY AND NON-DISCLOSURE AGREEMENT 

 2.01 Return of Property. Employee
hereby acknowledges and agrees that all Personal Property and equipment furnished to Employee in the course of, or incident to, Employee’s employment by the Parsley Group belongs to the Parsley Group and shall be promptly returned to Parsley
upon termination of employment or upon demand by the Parsley Group. “Personal Property” includes, without limitation, all automobiles, computers, phones, equipment, well reports, engineering data, credit cards, books, manuals,
records, reports, notes, contracts, lists, blueprints, and other documents, or materials, or copies thereof (including computer files and other electronically stored information), and all other proprietary information relating to the business of any
member of the Parsley Group. For the avoidance of doubt, “Personal Property” shall not include that certain 2010 Petra database file and associated logs and well information with correlating 2010 or older dates that Employee owned prior to
his employment with the Parsley Group. Following termination, Employee will not retain any written, computer files, or other tangible or intangible material containing any proprietary information, Confidential Information (as defined below) or trade
secrets of the Parsley Group or any of its agents, employees, and representatives. 
 2.02 Developed Intellectual Property. Employee
also acknowledges and agrees that in connection with the performance of Employee’s duties, Employee may author, create, or develop Confidential Information, trade secrets, and other intellectual property, both alone or in conjunction with
others. With respect to any and all trade secrets, inventions (whether or not patentable), discoveries, conceptions, ideas, copyrights (including copyrights in software), know-how, other intellectual property or proprietary rights and/or
improvements to any of the same authored, created, conceived, developed, or reduced to practice by Employee or Parsley (whether alone or in combination with others) (a) during Employee’s working hours, or (b) at Parsley’s,
expense, or (c) using any of Parsley’s, materials or facilities, or (d) that relates to the business of Parsley or to the research or development of Parsley (collectively, “Developed Intellectual Property”), Employee
agrees that the same are, and shall be, the exclusive property of the Parsley Group. Employee further acknowledges that all original works of authorship made by Employee (solely or jointly with others) that constitute Developed Intellectual Property
are “works made for hire,” as that term is defined in the United States Copyright Act. Without limiting the immediately preceding sentence, Employee agrees to and does hereby assign to Parsley, or its nominee, Employee’s entire right,
title, and interest in and to all Developed Intellectual Property. For clarity, such assignment includes all registrations or applications for registration of such Developed Intellectual Property, including any U.S. or international applications for
patents or copyright registrations filed during or after the Term of this Agreement. Employee shall promptly disclose all such works made 

  

			
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for hire and other Developed Intellectual Property to Parsley and, both during and after the Term of this Agreement, agrees to execute, at no cost to Parsley, any and all documents that Parsley
reasonably deems necessary to obtain, maintain, protect and/or enforce its worldwide right to, title interest in, and ownership of such works made for hire and Developed Intellectual Property. 

2.03 Confidential Information. During Employee’s employment, Parsley also agrees to provide, and Employee will develop as part of
Employee’s duties, various trade secrets and other confidential information that are, or will be, owned by Parsley, and that Parsley expressly agrees to assist Employee in developing. Such trade secrets or confidential information includes (but
is not limited to) internal confidential information previously developed or compiled by Parsley, commercially obtained information at substantial cost, research resources and other valuable and proprietary materials, and more specifically (but
without limitation): financial information and company planning, strategic goals and plans of Parsley or another member of the Parsley Group, geophysical data, engineering data and compilations, well logs, well production records, well files,
seismic and other geophysical data and interpretation, engineering data and analysis, maps, samples, cores, cuttings, well logs, well production records, well files, and the like (“Confidential Information”). Employee stipulates and
acknowledges: (i) that the Confidential Information is not generally known outside of Parsley’s business or by employees and others involved in the same business as Parsley; (ii) that Parsley takes significant measures to guard the
secrecy of this information; (iii) that the information is extremely valuable to Parsley and would be valuable to Parsley’s competitors; (iv) that Parsley has expended material amounts of money and effort in developing this
Confidential Information; and (v) that this Confidential Information could not be easily or properly acquired by others. 
 2.04
Confidentiality Obligation. Employee agrees to not disclose, directly or indirectly, any of the Confidential Information of Parsley, nor use it in any way, directly or indirectly, except in furtherance of Employee’s duties as an employee
under this Agreement. Employee specifically agrees that Employee will not use any Confidential Information for Employee’s own benefit, the benefit of any other person, including competitors of Parsley, or for the disadvantage of Parsley.
Employee will take care to guard the security of the Confidential Information at all times. In this regard, Employee agrees that Employee will not disclose any of this Confidential Information to any person that does not need to know and have the
right to know the information, including other Parsley employees, and that Employee will take care in guarding electronic data. Notwithstanding the foregoing, to the extent that Employee shall be required, by law or process of law, to disclose
Confidential Information, Employee shall be entitled to do so only to the extent so required, subject to giving prompt, advance notice of such requirement in writing to the General Counsel of Parsley so that Parsley may pursue a protective order or
other remedy, and Employee acknowledges and agrees to cooperate reasonably with Parsley’s efforts to obtain a confidentiality order or similar protection. 

2.05 Duties Upon Termination. Employee agrees that at such time as Employee’s services are terminated or upon demand by the Parsley
Group, for whatever reason, Employee shall promptly return: (i) all Confidential Information (however stored) and (ii) equipment in Employee’s possession belonging to Parsley. 

2.06 These confidentiality duties survive the termination of Employee’s employment into perpetuity. 

 

	III.	NON-COMPETITION AGREEMENT AND NON-SOLICITATION 

 3.01 Ancillary. The
non-competition obligations of Employee and the non-solicitation provisions in this Section III are ancillary to, and are supported by (and in support of), Parsley’s and Employee’s respective obligations set forth in this Agreement. 

  

			
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 3.02 Definitions. Terms given special meaning in this Section III are: 

“Compete” means: (i) to lease, purchase, or otherwise obtain a mineral estate (in whole or in part), including purchasing
or obtaining a royalty interest, overriding royalty interest, working interest, or the like or (ii) to provide petroleum engineering or geology services, or serve in a supervisory role of persons performing such services, to any corporate
entity operating as an exploration and production business other than members of the Parsley Group. 
 “Restricted Period”
means during such time as Employee is employed with Parsley and the one-year period commencing on the date Employee ceases employment with Parsley for any reason and ending on the first anniversary thereof; provided, however, that if Parsley
terminates Employee’s employment other than for Cause, the Restricted Period shall end six months after the date of termination of Employee’s employment with Parsley. 

“Territory” means all land within a three mile radius from the farthest outside edge of each oil or gas lease that is or was
under lease, letter agreement, or operated by a member of the Parsley Group as of the effective date of this Agreement. 
 3.03
Non-Compete Obligation. In return for the consideration given in this Agreement and in support of the promises therein, Employee agrees that Employee will not Compete during the Restricted Period in the Territory. 

3.04 Non-Solicitation. In return for the consideration given in this Agreement and in support of the promises therein, Employee agrees
that Employee will not directly or indirectly solicit or hire any employee of the Parsley Group to be an employee or co-venturer in another matter that Competes or intends to Compete with Parsley during the Restricted Period in the Territory. 

3.05 Non-Disparagement. Employee shall not, during the Term or any time thereafter, make any
untrue, misleading, or defamatory statements concerning the Parsley Parties. After termination of Employee’s employment with the Parsley Group for any reason, Parsley shall make commercially reasonable efforts to ensure that its managers,
directors and officers do not make any untrue, misleading, or defamatory statements concerning Employee. Employee will not, and Parsley shall make commercially reasonable efforts to ensure that its managers, directors and officers do not, directly
or indirectly make, repeat or publish any false, disparaging, negative, unflattering, accusatory, or derogatory remarks or references, whether oral or in writing, concerning the Parsley Parties or Employee, respectively, or otherwise take any action
which might reasonably be expected to cause damage or harm to the Parsley Parties or Employee, respectively. However, nothing in this Agreement is intended to restrict actions or communications protected or required by law, such as enforcing rights
under this Agreement or any other agreement, testifying truthfully as a witness, or complying with other legal obligations, including communicating with or fully cooperating in the investigations of any governmental agency on matters within their
jurisdictions. 
 3.06 Cooperation. Upon the receipt of reasonable notice from Parsley (including outside counsel), Employee agrees
that while employed by any Parsley and thereafter, Employee shall provide reasonable assistance to the Parsley Group and their respective representatives in defense of any claims that may be made against any member of the Parsley Group and shall
assist in the prosecution of any claims that may be made by any member of the Parsley Group, to the extent that such claims relate to or arise out of Employee’s service to or employment by Parsley. Employee agrees to inform Parsley promptly if
Employee becomes aware of any lawsuits involving such claims that may be filed or threatened against any member of the Parsley Group. Employee also agrees to inform Parsley promptly (to the extent legally permitted to do so) if Employee is asked to
assist in any investigation of any member of the Parsley Group (or its actions), regardless of whether a lawsuit or other proceeding has then been filed against any member of the Parsley Group with respect to such investigation. Upon presentation of
appropriate documentation, Parsley shall pay or reimburse Employee for all reasonable out-of-pocket expenses incurred by Employee in complying with this Section 3.06. If at the time of compliance Employee is no longer an employee, officer or
director (or functional equivalent) of any member of the Parsley Group, Parsley shall provide a reasonable per diem to Employee. 

  

			
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 3.07 Stipulation of Reasonable Scope and Term. Employee warrants, represents, and
stipulates that the consideration given in this Agreement was good and valid consideration and that no bad faith existed in the negotiation of this Agreement. Employee further warrants, represents, and stipulates the duties imposed and rights
granted in this Section III are necessary to protect legitimate interests of Parsley and the Parsley Group as set forth in this document and, in particular, that the non-compete obligations set forth in
Section 3.03 are fair, appropriate, and reasonable in their limitations with respect to time, geographic area, and scope of activities and impose no more restraint than is necessary to protect Parsley’s legitimate business interest, nor
are they oppressive, nor will they unreasonably deprive Employee of the ability to earn a living. 
  

	IV.	GENERAL 

 4.01 Enforcement by Injunction. Employee acknowledges that
Employee’s violation or threatened or attempted violation of the covenants contained in Section III of this Agreement will cause irreparable harm to Parsley and that money damages would not be sufficient remedy for any breach of those
covenants. Employee agrees that Parsley shall be entitled as a matter of right to specific performance of the covenants in Section III of this Agreement, including entry of an ex parte temporary restraining order in a state or federal court,
preliminary and permanent injunctive relief against activities in violation of this Agreement, or both, or other appropriate judicial remedy, writ, or order, in any court of competent jurisdiction, restraining any violation or further violation of
such agreements by Employee or others acting on Employee’s behalf, without any showing of irreparable harm and without any showing that Parsley does not have an adequate remedy at law. In furtherance of the intent to allow for immediate
injunctive relief in the event of a breach, or threatened breach, of this Agreement, Employee agrees that Parsley would be entitled to its attorneys’ fees if successful in seeking injunctive relief and that any temporary restraining order or
temporary/preliminary injunction bond should not be more than $1,000. Injunction is expressly not the exclusive remedy hereunder. 
 4.02
Assignment. This Agreement is personal to Employee, and neither this Agreement nor any rights or obligations hereunder shall be assignable or otherwise transferred by Employee. Parsley may assign this Agreement without Employee’s consent
to any successor (whether by merger, purchase, or otherwise) to all or substantially all of the equity, assets, or businesses of Parsley. The rights and obligations of Parsley under this Agreement will inure to the benefit of the successors and
assigns of Parsley. 
 4.03 Savings Clause. Should any court of competent jurisdiction hold any term, provision, covenant, or
condition of this Agreement (or portion thereof) to be illegal, void, unenforceable, or otherwise invalid, such term, provision, covenant, or condition (or portion thereof), will be automatically conformed to the applicable law to give the
provision(s) the greatest effectuation possible of the original intent allowed by law and equity, and this Agreement will otherwise continue in full force and effect. 

4.04 Entire Agreement. This Agreement represents the entire agreement of the Parties regarding the employment of Employee and cancels
and supersedes all prior written or oral agreements, including, without limitation, the Prior Agreement and any other prior non-disclosure, confidentiality, or employment agreements. The terms are contractual and not mere recitals. In entering into
this Agreement, each Party stipulates, warrants, and represents that it or Employee has relied on the advice of its or Employee’s own attorneys and financial advisors concerning the legal and tax consequences of the Agreement; that its or
Employee’s own attorneys have completely read and explained to it or Employee the terms of the Agreement; that each is a sophisticated business person with experience negotiating these types of transactions; that no special relationship of
influence or trust existed among the Parties prior to the entry into this Agreement that caused it or Employee to enter this Agreement; that each fully 

  

			
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understands and voluntarily accepts the terms of the Agreement without any duress or undue persuasion put upon it or Employee by the other or any other person, specifically including, but not
limited to, counsel or accountants for either Party; and that no representations, promises, or statements outside the four corners of this Agreement by the opposite Party, nor any agent, employee, attorney, accountant, or other representative of
the opposite Party has influenced it or Employee into entering this Agreement. Each Party has had access to counsel and an opportunity to read, review, and revise this Agreement. This Agreement is the result of the joint efforts of the Parties
and each of the party’s respective counsel. Therefore, the Parties agree that this Agreement, and any given provision of it, should not be construed against either Party. Each of the Parties hereto recognize and stipulate that this provision is
binding as a matter of law and fact and shall preclude said Party from asserting that Employee was wrongfully induced to enter into this Agreement by any representation, promise, or agreement, or statement of a past or existing fact, which is not
found within the four corners of this Agreement. 
 4.05 Key Person Insurance. Parsley and Employee acknowledge that Employee is a
“key person” and as such Parsley may take out life insurance on such Employee for the benefit of Parsley or its affiliates. Employee agrees to cooperate with Parsley and submit to the necessary medical examinations and tests
reasonably required to obtain such insurance, but insurability is not a condition of employment or continuation of employment. 
 4.06 No
Waiver. A waiver of any breach of any of the terms of this Agreement shall be effective only if in writing and signed by the Party against whom such waiver or breach is claimed. No waiver of any breach shall be deemed a waiver of any other
subsequent breach. 
 4.07 Further Assurances. Each Party shall each execute such assignments, endorsements and other instruments and
documents and shall give such further assurance as shall be reasonably necessary to perform its obligations under this Agreement. 
 4.08
Third Party Beneficiaries. Each member of the Parsley Group, together with any additional or future affiliates thereof, are expressly third party beneficiaries of Employee’s representations herein and can enforce this Agreement as if a
party hereto. 
 4.09 Clawback. Notwithstanding any other provisions in this Agreement to the contrary, any incentive-based
compensation, or any other compensation, paid to Employee pursuant to this Agreement or any other agreement or arrangement with Parsley or another member of the Parsley Group which is subject to recovery under any law, government regulation or stock
exchange listing requirement, will be subject to such deductions and clawback as may be required to be made pursuant to such law, government regulation or stock exchange listing requirement (or any policy adopted by Parsley or the Parsley Group
pursuant to any such law, government regulation or stock exchange listing requirement). 
 4.10 Section 409A. 

(i) This Agreement is intended to comply with Section 409A of the Code and the applicable Treasury Regulations issued thereunder
(“Section 409A”) or an exemption thereunder and shall be construed and administered in accordance with Section 409A. Notwithstanding any other provision of this Agreement, payments provided under this Agreement may only be made
upon an event and in a manner that complies with Section 409A or an applicable exemption. Any payments under this Agreement that may be excluded from Section 409A either as separation pay due to an involuntary separation from service or as
a short-term deferral shall be excluded from Section 409A to the maximum extent possible. For purposes of Section 409A, each installment payment provided under this Agreement shall be treated as a separate payment. Any payments to be made
under this Agreement upon a termination of employment shall only be made upon a “separation from service” under Section 409A. The amount of expenses eligible for reimbursement, or in-kind benefits provided, if any, under this
Agreement during 

  

			
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Employee’s taxable year shall not affect the expenses eligible for reimbursement or in in-kind benefits to be provided, in any other taxable year. Further, the reimbursement of an eligible
expense will be made on or before the last day of Employee’s taxable year following the taxable year in which the expense was incurred and the right to reimbursement or in-kind benefits, if any, is not subject to liquidation or exchange for
another benefit. Notwithstanding the foregoing, the Parsley Group makes no representations that the payments and benefits provided under this Agreement comply with Section 409A and in no event shall the Parsley Group be liable for all or any
portion of any taxes, penalties, interest or other expenses that may be incurred by Employee on account of non-compliance with Section 409A. 

(ii) Notwithstanding any other provision of this Agreement, if any payment or benefit provided to Employee in connection with Employee’s
termination of employment is determined to constitute “nonqualified deferred compensation” within the meaning of Section 409A and Employee is determined to be a “specified employee” as defined in
Section 409A(a)(2)(b)(i), then such payment or benefit shall not be paid until the first payroll date to occur following the six-month anniversary of the date of Employee’s termination of employment (the “Specified Employee Payment
Date”). The aggregate of any payments that would otherwise have been paid before the Specified Employee Payment Date shall be paid to Employee in a lump sum on the Specified Employee Payment Date and thereafter, any remaining payments shall
be paid without delay in accordance with their original schedule. 
 4.11 Governing Law; Venue; Waiver of Trial by Jury. 

(i) This Agreement and the rights of the Parties hereunder shall be governed by, interpreted, and enforced in accordance with the internal laws
of the State of Texas without giving effect to any choice of law or conflicts of law rules or provisions thereof. 
 (ii) This Agreement was
negotiated, made, executed, and will be performed (in whole or in part) in Midland County, Texas. Each Party irrevocably agrees that any action or proceeding involving any dispute or matter arising under or relating to this Agreement may only be
brought in the state or federal courts of the State of Texas in Midland County. In accordance with the foregoing, each Party agrees that the courts of Midland County will be the exclusive venue for any dispute or matter arising under or relating to
this Agreement, which such jurisdiction, forum, and venue each Party expressly acknowledges and agrees has a direct, reasonable relation to this Agreement and any controversy relating to or arising from this Agreement, and the Parties agree not to
raise, and hereby waive, any objection to or defense based upon the jurisdiction or venue of any such court or forum non conveniens. 
 (iii)
TO THE EXTENT NOT PROHIBITED BY APPLICABLE LAW, EACH PARTY TO THIS AGREEMENT HEREBY WAIVES, AND COVENANTS THAT IT SHALL NOT ASSERT (WHETHER AS PLAINTIFF, DEFENDANT OR OTHERWISE), ITS RESPECTIVE RIGHT TO A JURY TRIAL OF ANY PERMITTED CLAIM OR CAUSE
OF ACTION ARISING OUT OF THIS AGREEMENT, ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY, OR ANY DEALINGS BETWEEN ANY OF THE PARTIES HERETO RELATING TO THE SUBJECT MATTER OF THIS AGREEMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY. THE SCOPE OF
THIS WAIVER AND COVENANT IS INTENDED TO BE ALL ENCOMPASSING OF ANY AND ALL DISPUTES THAT MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT MATTER OF THIS AGREEMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY, INCLUDING, CONTRACT CLAIMS,
TORT CLAIMS AND ALL OTHER COMMON LAW AND STATUTORY CLAIMS. THIS WAIVER AND COVENANT IS IRREVOCABLE AND SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, SUPPLEMENTS OR OTHER MODIFICATIONS TO THIS AGREEMENT. 

(iv) In the event of any action or proceeding involving any dispute or matter arising under or relating to this Agreement, the prevailing party
in such action or proceeding shall be entitled to recover from the other party all reasonable and necessary attorneys’ fees incurred in connection with such action or proceeding. 

  

			
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 4.12 Multiple Counterparts. This Agreement may be executed in any number of counterparts,
or with counterpart signature pages, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. 

[Signatures Follow] 

  

			
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 Executed as of this 13th day of February 2014. 

 

			
	EMPLOYEE:
	
	 /s/ Matthew Gallagher

	Matthew Gallagher, an individual
	
	Parsley Energy Operations, LLC
		
	By:	 	 /s/ Colin Roberts

		 	Colin Roberts, General Counsel



  

			
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