AMENDMENT NO. 8
TO THE PIONEER NATURAL RESOURCES COMPANY
EXECUTIVE DEFERRED COMPENSATION PLAN
(Amended and Restated Effective January 1, 2009)

WHEREAS, pursuant to the provisions of Section 11.4 thereof, the Pioneer Natural
Resources Company Executive Deferred Compensation Plan (Amended and Restated
Effective January 1, 2009, and as further amended to date) may be amended from
time to time, provided that no amendment may be made that impairs the rights of
a Member with respect to amounts already allocated to his or her accounts;

WHEREAS, the Company has determined that the following amendments preserve the
rights of all Members with respect to amounts allocated to his or her Accounts
as of the date this Amendment becomes effective.

NOW, THEREFORE, the Plan shall be amended as follows:

1.The defined term “Matching Credit” in Section 2.1 of the Plan shall be amended
and restated as follows:

“Matching Credit” means matching credits made by the Company on a Member’s
behalf pursuant to Section 4.3(a)(i) or 4.3(a)(iii).

2.Section 4.3(a) of the Plan shall be amended and restated in its entirety as
follows:

(a) Matching Credits.

 (i) Matching Credit. The Company shall make Matching Credits on a Member’s
behalf, subject to a maximum amount during each payroll period and an aggregate
maximum amount with respect to each Plan Year, as follows:

(1) Payroll Period Matching Credits and Maximums. For each payroll period, the
Company shall defer on a Member’s behalf an amount which equals a percentage of
the Member Deferrals elected by such Member during such payroll period: (A) with
respect to all payroll periods ending prior to May 25, 2020, the Company will
match 100% of the Member’s Deferral for that payroll period; and (B) with
respect to all payroll periods beginning on or after May 25, 2020, the Company
will match 50% of the Member’s Deferral for that payroll period. Notwithstanding
the preceding sentence, in no event shall the Matching Credit on a Member’s
behalf for any payroll period exceed 8% of the Member’s Basic Compensation for
that payroll period, or 10% of the Member’s Basic Compensation for that payroll
period for officers of the Company.

(2) Annual Matching Credits Maximums. Notwithstanding anything to the contrary
within 4.3(a)(i)(1) above,

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(A) with respect to Plan Years prior to 2020, the Company’s Matching Credit to a
Member’s Account shall not exceed 8% of the Member’s Basic Compensation for the
Plan Year for Members who are not officers of the Company, and 10% of the
Member’s Basic Compensation for the Plan Year for officers of the Company;

(B) with respect to the 2020 Plan Year, the Company’s Matching Credit to a
Member’s Account shall not exceed 5.692% of the Member’s Basic Compensation for
the Plan Year for Members who are not officers of the Company, and 7.115% of the
Member’s Basic Compensation for the Plan Year for officers of the Company; and

(C) with respect to any Plan Year beginning on or after January 1, 2021, the
Company’s Matching Credit to a Member’s Account shall not exceed 4% of the
Member’s Basic Compensation for the Plan Year for Members who are not officers
of the Company, and 5% of the Member’s Basic Compensation for the Plan Year for
officers of the Company.

Matching Credits made on a Member’s behalf shall be credited to his or her
Matching Account in accordance with Section 5.1.

(ii) Make-Up Matching Credit. The Company shall defer on a Service Member’s
behalf as a make-up matching credit (the “Make-Up Matching Credit”) an amount
which equals: (1) with respect to any period of absence for uniformed service on
or prior to May 25, 2020, 100% of the Service Member’s Make-Up Deferrals made
pursuant to Section 4.2(c), and (2) with respect to any period of absence for
uniformed service following May 25, 2020, 50% of the Service Member’s Make-Up
Deferrals made pursuant to Section 4.2(c); provided, however, that in no event
shall the Service Member’s Make-Up Matching Credits exceed the following:

(A) with respect to any period of absence for uniformed service on or prior to
May 25, 2020, (A) 8% (10% for officers of the Company) of the Service Member’s
Basic Compensation during his or her periods of absence for uniformed service
minus (B) any Matching Credits made to the Plan on behalf of the Service Member
under Section 4.3(a)(i) during the Service Member’s periods of absence for
uniformed service; or

(B) with respect to any period of absence for uniformed service following May
25, 2020, (A) 4% (5% for officers of the Company) of the Service Member’s Basic
Compensation during his or her periods of absence for uniformed service minus
(B) any Matching Credits made to the Plan on behalf of the Service Member under

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Section 4.3(a)(i) during the Service Member’s periods of absence for uniformed
service.

Make-up Matching Credits made on a Service Member’s behalf shall be credited to
his or her Matching Account in accordance with Section 5.1.

(iii) Additional Matching Credits. In the event that the Company has not made
Matching Credits in the amounts allowed pursuant to Section 4.3(a) for any Plan
Year, the Company shall make an additional Matching Credit (an “Additional
Matching Credit”) on a Member’s behalf in an amount equal to the value that
would result in the Member receiving a total Matching Credit equal to the annual
limitations set forth in Section 4.3(a)(i)(2) above. Additional Matching Credits
made on a Member’s behalf shall be credited to his or her Matching Account as a
Matching Credit in accordance with Section 5.1.

IN WITNESS WHEREOF, this Amendment has been executed on this 6th day of May,
2020, to be effective as of May 25, 2020.

PIONEER NATURAL RESOURCES COMPANY

By: /s/ Tyson L. Taylor
Tyson L. Taylor, Vice President, Human Resources