As filed with the Securities and Exchange Commission on June 26, 2022
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM 11-K
       / x /      ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934
                   For the fiscal year ended December 31, 2021
                                       OR
       /   /    TRANSITION REPORT PURSUANT TO SECTION 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934
                  For the transition period from _____ to _____
                          Commission File No. 333-39153
A.    Full title of the plan and the address of the plan, if different from that
      of the issuer named below:
                        PIONEER NATURAL RESOURCES COMPANY
                      DEFERRED COMPENSATION RETIREMENT PLAN
B.    Name of issuer of the securities held pursuant to the plan and the address
      of its principal executive officer:
                        Pioneer Natural Resources Company
                          5205 North O'Connor Boulevard
                            1400 Williams Square West
                               Irving, Texas 75039

                        PIONEER NATURAL RESOURCES COMPANY
                      DEFERRED COMPENSATION RETIREMENT PLAN
                              Financial Statements
                for the period August 8, 2022 (date of inception)
                            through December 31, 2021
                   (With Independent Auditors' Report Thereon)

                          Independent Auditors' Report
To the Participants and Administrator of
   the Pioneer Natural Resources Company
   Deferred Compensation Retirement Plan:
We have audited the accompanying  statement of net assets available for benefits
of Pioneer Natural Resources Company Deferred Compensation  Retirement Plan (the
"Plan") as of December  31,  1997,  and the related  statement of changes in net
assets  available  for  benefits  for the  period  from  August 8, 2022 (date of
inception)  through  December  31,  1997.  These  financial  statements  are the
responsibility  of the Plan's  management.  Our  responsibility is to express an
opinion on these financial statements based on our audit.
We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance   about  whether  the  financial   statements  are  free  of  material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December 31, 1997, and the changes in net assets  available for benefits for the
period  from August 8, 2022 (date of  inception)  through  December  31, 2021 in
conformity with generally accepted accounting principles.
Our audit was  performed  for the  purpose  of  forming  an opinion on the basic
financial  statements taken as a whole. The Fund Information in the statement of
changes in net assets  available  for  benefits  is  presented  for  purposes of
additional  analysis rather than to present the changes in net assets  available
for plan benefits of each fund. The Fund  Information  has been subjected to the
auditing procedures applied in the audit of the basic financial  statements and,
in our opinion,  are fairly  stated in all material  respects in relation to the
basic financial statements taken as a whole.
                                                       KPMG Peat Marwick LLP
Midland, Texas
June 12, 2022
                                        3

                       PIONEER NATURAL RESOURCES COMPANY
                      DEFERRED COMPENSATION RETIREMENT PLAN
                 Statement of Net Assets Available for Benefits
                                December 31, 2021
ASSETS
 Investments at fair value (Note 2):
   Vanguard Money Market Reserves - Prime Portfolio - 44,505
      shares (cost approximates fair value)                          $  44,505
   Mutual Funds:
      Vanguard Bond Index Fund - Total Bond Market Portfolio -
         109 shares (cost $1,091)                                        1,097
      Vanguard Explorer Fund - 378 shares (cost $22,858)                20,920
      Vanguard Fixed Income Fund - HY Corporate Portfolio - 3,010
         shares (cost $24,284)                                          24,323
      Vanguard Fixed Income Fund - LT Corporate Portfolio - 293
         shares (cost $2,697)                                            2,713
      Vanguard Fixed Income Fund - ST Corporate Portfolio - 455
         shares (cost $4,904)                                            4,913
      Vanguard Index Trust - 500 Portfolio - 769 shares
         (cost $70,155)                                                 69,257
      Vanguard Index Trust - Extended Market Portfolio - 232 shares
         (cost $7,492)                                                   7,148
      Vanguard Index Trust - Small Cap Stock Portfolio - 957 shares
         (cost $23,705)                                                 22,722
      Vanguard Index Trust - Total Stock Market Portfolio - 947
         shares (cost $21,801)                                          21,446
      Vanguard International Equity Index Fund - Emerging Markets
         Portfolio - 3,121 shares (cost $31,970)                        31,175
      Vanguard International Equity Index Fund - European
         Portfolio - 308 shares (cost $6,285)                            6,209
      Vanguard International Equity Index Fund - Pacific Portfolio -
         1,387 shares (cost $11,174)                                    10,704
      Vanguard International Growth Portfolio - 1,977 shares
         (cost $33,795)                                                 32,407
      Vanguard U.S. Growth Portfolio - 2,765 shares (cost $81,795)      79,353
      Vanguard/PRIMECAP Fund - 1,218 shares (cost $50,139)              48,210
      Vanguard/Wellesley Income Fund - 242 shares (cost $5,538)          5,286
      Vanguard/Wellington Fund - 2,668 shares (cost $82,047)            78,561
      Vanguard/Windsor II - 2,762 shares (cost $83,935)                 79,062
                                                                      --------
           Net assets available for benefits                         $ 590,011
                                                                      ========
See accompanying notes to financial statements.
                                        4


                                                 PIONEER NATURAL RESOURCES COMPANY
                                               DEFERRED COMPENSATION RETIREMENT PLAN
                                            Statement   of   Changes   in  Net   Assets
                                       Available for Benefits For the Period August 8, 2022
                                          (date of inception) through December 31, 2021
                                                                           Mutual Funds
                                                      ---------------------------------------------------------
                                          Vanguard     Vanguard              Vanguard    Vanguard    Vanguard   
                                           Money         Bond                  Fixed       Fixed       Fixed    
                                           Market     Index Fund-             Income      Income      Income    
                                          Reserves-   Total Bond  Vanguard    Fund-HY     Fund-LT     Fund-ST   
                                            Prime       Market    Explorer   Corporate   Corporate   Corporate  
                                          Portfolio   Portfolio     Fund     Portfolio   Portfolio   Portfolio  
                                          ---------   ---------   --------   ---------   ---------   ---------
                                                                                   
Additions to net assets attributed to:
  Dividend income                         $     112   $       3   $  1,819   $     103   $      27   $      15  
  Employer contributions                     12,690         544      9,457      11,187       1,335       2,444  
  Employee contributions                     30,109         544     11,583      12,994       1,335       2,445  
  Net appreciation (depreciation)
    in fair value of investments                -             6     (1,939)         39          16           9  
                                           --------    --------    -------    --------    --------    --------  
      Total additions                        42,911       1,097     20,920      24,323       2,713       4,913  
                                           --------    --------    -------    --------    --------    --------  
Deductions from net assets                      -           -          -           -           -           -    
                                           --------    --------    -------    --------    --------    --------  
  Net increase prior to interfund
    transfers                                42,911       1,097     20,920      24,323       2,713       4,913  
  Interfund transfers                         1,594         -          -           -           -           -    
                                           --------    --------    -------    --------    --------    --------  
        Net increase                         44,505       1,097     20,920      24,323       2,713       4,913  
Net assets available for plan benefits:
  Beginning of period                           -           -          -           -           -           -    
                                           --------    --------    -------    --------    --------    --------  
  End of year                             $  44,505   $   1,097   $ 20,920   $  24,323   $   2,713   $   4,913  
                                           ========    ========    =======    ========    ========    ========  
See accompanying notes to financial statements.
                                                                                                             continued
                                                               5a
PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN Statement of Changes in Net Assets Available for Benefits For the Period August 8, 2022 (date of inception) through December 31, 2021 (continued) Mutual Funds --------------------------------------------- Vanguard Vanguard Vanguard Index Vanguard Index Index Trust- Index Trust-Total Trust- Extended Trust-Small Stock 500 Market Cap Stock Market Portfolio Portfolio Portfolio Portfolio --------- --------- --------- --------- Additions to net assets attributed to: Dividend income $ 697 $ 362 $ 1,053 $ 304 Employer contributions 34,495 2,660 9,682 10,777 Employee contributions 34,963 4,489 13,084 12,351 Net appreciation (depreciation) in fair value of investments (898) (345) (983) (392) -------- ------- -------- -------- Total additions 69,257 7,166 22,836 23,040 -------- ------- -------- -------- Deductions from net assets - 18 114 - -------- ------- -------- -------- Net increase prior to interfund transfers 69,257 7,148 22,722 23,040 Interfund transfers - - - (1,594) -------- ------- -------- -------- Net increase 69,257 7,148 22,722 21,446 Net assets available for plan benefits: Beginning of period - - - - -------- ------- -------- -------- End of year $ 69,257 $ 7,148 $ 22,722 $ 21,446 ======== ======= ======== ======== See accompanying notes to financial statements. continued 5b
PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN Statement of Changes in Net Assets Available for Benefits For the Period August 8, 2022 (date of inception) through December 31, 2021 (continued) Mutual Funds ---------------------------------------------------------------------- Vanguard International Vanguard Vanguard Equity International International Index Fund- Equity Equity Vanguard Vanguard Emerging Index Fund- Index Fund- International U.S. Markets European Pacific Growth Growth Portfolio Portfolio Portfolio Portfolio Portfolio ----------- ------------ ------------ ------------ --------- Additions to net assets attributed to: Dividend income $ 615 $ 111 $ 108 $ 1,211 $ 2,699 Employer contributions 14,816 2,351 5,130 15,621 38,868 Employee contributions 16,856 3,854 5,992 16,963 40,228 Net appreciation (depreciation) in fair value of investments (795) (76) (470) (1,388) (2,442) -------- --------- --------- ---------- -------- Total additions 31,492 6,240 10,760 32,407 79,353 -------- --------- --------- ---------- -------- Deductions from net assets 317 31 56 - - -------- --------- --------- ---------- -------- Net increase prior to interfund transfers 31,175 6,209 10,704 32,407 79,353 Interfund transfers - - - - - -------- --------- --------- ---------- -------- Net increase 31,175 6,209 10,704 32,407 79,353 Net assets available for plan benefits: Beginning of period - - - - - -------- --------- --------- ---------- -------- End of year $ 31,175 $ 6,209 $ 10,704 $ 32,407 $ 79,353 ========= ========= ========= ========== ======== See accompanying notes to financial statements. continued 6a
PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN Statement of Changes in Net Assets Available for Benefits For the Period August 8, 2022 (date of inception) through December 31, 2021 (continued) Mutual Funds ---------------------------------------------- Vanguard/ Vanguard/ Wellesley Vanguard/ Vanguard/ PRIMECAP Income Wellington Windsor Fund Fund Fund II Total --------- --------- ---------- --------- ---------- Additions to net assets attributed to: Dividend income $ 1,383 $ 326 $ 3,644 $ 4,891 $ 19,483 Employer contributions 22,091 2,606 36,713 35,291 268,758 Employee contributions 26,665 2,606 41,690 43,753 322,504 Net appreciation (depreciation) in fair value of investments (1,929) (252) (3,486) (4,873) (20,198) -------- -------- --------- -------- --------- Total additions 48,210 5,286 78,561 79,062 590,547 -------- -------- --------- -------- --------- Deductions from net assets - - - - 536 -------- -------- --------- -------- --------- Net increase prior to interfund transfers 48,210 5,286 78,561 79,062 590,011 Interfund transfers - - - - - -------- -------- --------- -------- --------- Net increase 48,210 5,286 78,561 79,062 590,011 Net assets available for plan benefits: Beginning of period - - - - - -------- -------- --------- -------- --------- End of year $ 48,210 $ 5,286 $ 78,561 $ 79,062 $ 590,011 ======== ======== ========= ======== ========= See accompanying notes to financial statements. 6b
PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 1. Description of Plan The following brief description of the provisions of the Pioneer Natural Resources Company Deferred Compensation Retirement Plan ("the Plan") is provided for general information purposes only. Eligible employees should refer to the Plan document for more complete information. The Plan is not subject to the provisions of the Employee Retirement Income Security Act of 1974 ("ERISA") (See Note 6). General The Plan is a defined contribution plan available to eligible employees of Pioneer Natural Resources Company ("the Employer"). An eligible employee is any individual who is employed by the Employer and (i) is an officer or (ii) a member of a select group of management or highly compensated employees who are designated by the Compensation Committee of the Board of Directors (the "Plan Administrator") from time to time as being eligible to participate in the Plan. Certain administrative functions such as maintenance of account balances and allocation of earnings are performed by the Vanguard Group. Contributions Participants may elect to contribute up to a maximum amount of 25% from their pay and/or bonus. The Employer contributes to the Plan an amount equal to 100% of a participant's contribution not to exceed 8% of salary for a select group of management or 10% of salary for officers. The Employer's contribution amounted to $268,758 for the period from August 8, 2022 (date of inception) through December 31, 1997. Participant Accounts Each participant's account is credited with the participant's contributions, the Employer's matching contributions and an allocation of Plan earnings. The net return on investments is allocated to each participant's account in proportion to the account value of the participant's account relative to the entire equity investment portfolio. Investment Options Participants may invest their account balance in any of, or a combination of, 19 investment funds. Employer contributions are allocated on a pro rata basis to the participant's selected fund(s). 7 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 1. Description of Plan (continued) o Vanguard Money Market Reserves - Prime Portfolio (10 participants): Seeks to provide high income and a stable share price of $1 by investing in short-term, high-quality money market instruments issued by financial institutions, nonfinancial corporations, the U.S. government and federal agencies. o Vanguard Bond Index Fund - Total Bond Market Portfolio (1 participant): Seeks to provide a high level of interest income by attempting to match the performance of the unmanaged Lehman Brothers Aggregate Bond Index, a widely recognized measure of the entire taxable U.S. bond market. o Vanguard Explorer Fund (8 participants): Seeks to provide long-term growth of capital by investing in a diversified group of small-company stock with prospects for above-average growth. o Vanguard Fixed Income Fund - HY Corporate Portfolio (13 participants): Seeks to provide a high level of interest income by investing in high-yield corporate bonds, or 'junk' bonds. These bonds pay higher interest rates because they are considered to carry greater risk of default than bonds with higher credit ratings. o Vanguard Fixed Income Fund - LT Corporate Portfolio (1 participant): Seeks to provide a high and sustainable level of interest income by investing primarily in a diversified group of long-term bonds issued by corporations with strong credit ratings. o Vanguard Fixed Income Fund - ST Corporate Portfolio (2 participants): Seeks to provide income while maintaining a high degree of stability of principal by investing in short-term bonds, including high-quality corporate and U.S. Treasury securities. o Vanguard Index Trust - 500 Portfolio (27 participants): Seeks to provide long-term growth of capital and income from dividends by holding all of the 500 stocks that make up the unmanaged Standard & Poor's 500 Composite Stock Price Index, a widely recognized benchmark of U.S. stock market performance. o Vanguard Index Trust - Extended Market Portfolio (5 participants): Seeks to provide long-term growth of capital by attempting to match the performance of the Wilshire 4500 Equity Index, an unmanaged index made up mostly of mid- and small-capitalization companies. 8 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 1. Description of Plan (continued) o Vanguard Index Trust - Small Cap Stock Portfolio (15 participants): Seeks to provide long-term growth of capital by investing in a sample of stocks in the Russell 2000 Index, an unmanaged index of smaller companies. o Vanguard Index Trust - Total Stock Market Portfolio (8 participants): Seeks to provide long-term growth of capital and income by attempting to match the performance results of the Wilshire 5000 Equity Index, an unmanaged index that covers all regularly traded U.S. stocks. o Vanguard International Equity Index Fund - Emerging Markets Portfolio (10 participants): Seeks to provide long-term growth of capital by attempting to match the performance of the unmanaged Morgan Stanley Capital International Select Emerging Markets Free Index, which is made up of stocks from 16 emerging countries' markets as well as the more developed markets of Hong Kong and Singapore. o Vanguard International Equity Index Fund - European Portfolio (7 participants): Seeks to provide long-term growth of capital by attempting to match the investment results of the unmanaged Morgan Stanley Capital International Europe Index, which is made up mostly of stocks from 15 European countries. . o Vanguard International Equity Index Fund - Pacific Portfolio (6 participants): Seeks to provide long-term growth of capital by attempting to match the performance of the unmanaged Morgan Stanley Capital International Pacific Free Index, which is made up of stocks from companies in Japan (a significant majority), Australia, New Zealand, Malaysia and Singapore. o Vanguard International Growth Portfolio (20 participants): Seeks to provide long-term growth of capital by investing in stocks of high-quality seasoned companies based outside the United States. Stocks are selected from more than 15 countries. o Vanguard U.S. Growth Portfolio (21 participants): Seeks to provide long- term growth of capital by investing in large, high-quality, seasoned U.S. companies with records of exceptional growth and above-average prospects for future growth. o Vanguard/PRIMECAP Fund (26 participants): Seeks long-term growth of capital by investing in stocks of companies with above-average prospects for continued earnings growth, strong industry positions and skilled management teams. 9 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 1. Description of Plan (continued) o Vanguard/Wellesley Income Fund (5 participants): Seeks to provide a high level of income, long-term growth of income and moderate long-term growth of capital by investing 60% to 65% of its assets in high-quality long-term and intermediate-term bonds and the remainder in dividend-paying stocks. o Vanguard/Wellington Fund (22 participants): Seeks to provide income and long-term growth of capital, without undue risk to capital, by investing about 65% of its assets in stocks and the remaining 35% in bonds. o Vanguard/Windsor II (32 participants): Seeks to provide long-term growth of capital and income from dividends by investing in a diversified group of out-of-favor stocks of large-capitalization companies. The stocks generally sell at prices below the overall market average compared to their dividend income and future return potential. Vesting A member shall have a 100% vested interest in his general account and matching contribution account at all times. Note 2. Summary of Significant Accounting Policies Basis of Presentation The accompanying financial statements have been prepared on the accrual basis of accounting. Trust Accounting The Plan's assets are held with Vanguard Fiduciary Trust Company (the "Trustee"). Investment Valuation Investments are valued at fair value as determined by the Trustee. Fair value is determined as follows: 1) Investments in securities traded on national securities exchanges are valued at the last reported sales price on the last business day of the year; 10 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 2. Summary of Significant Accounting Policies (continued) 2) Securities traded on over-the-counter markets and listed securities for which no sales were reported on that date, if any, are valued at the mean between the last reported bid and asked prices; and 3) Investments in restricted securities and other security investments, if any, not having an established market are valued at fair value as determined by the investment manager of the trust. Payments of Benefits The total value of the vested portion of the participant's account will be paid in one lump sum as soon as administratively possible, or in annual installment payments for a term of either five or ten years. Withdrawal of Benefits Employees may withdraw their vested interest in the Plan under certain hardship conditions as defined in the Plan. Terminated participants may also withdraw their vested interest in the Plan. Security Transactions and Investment Income Security transactions are accounted for on a trade-date basis. Expenses incurred with transactions, if any, are added to the purchase price or deducted from the selling price at the time of the transactions. Dividend income is recorded on the ex-dividend date. Income from other investments is recorded as earned on an accrual basis. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires the Plan Administrator to make estimates and assumptions that affect the reported amounts of net assets available for benefits at the date of the financial statements and the reported changes in net assets available for benefits during the reporting periods. Actual results could differ from those estimates. 11 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 3. Investments Investments that represent 5% or more of the Plan's net assets are separately identified: December 31, 2021 ------------------- Shares Fair Value ------ ---------- Investments at fair value as determined by quoted market price: Vanguard Money Market Reserves - Prime Portfolio 44,505 $ 44,505 Mutual Funds: Vanguard Index Trust - 500 Portfolio 769 69,257 Vanguard International Equity Index Fund - Emerging Markets Portfolio 3,121 31,175 Vanguard International Growth Portfolio 1,977 32,407 Vanguard U.S. Growth Portfolio 2,765 79,353 Vanguard/PRIMECAP Fund 1,218 48,210 Vanguard/Wellington Fund 2,668 78,561 Vanguard/Windsor II 2,762 79,062 Other 127,481 --------- $ 590,011 ========= Note 4. Plan Termination Although it has not expressed any intent to do so, the Employer has the right under the Plan to discontinue its contributions at any time and to terminate the Plan in the manner specified by the Plan Administrator, which may include the payment of a single lump sum or cash payment in full satisfaction of a participant's benefits. Note 5. Administrative Expenses The Employer may pay all expenses incurred in the establishment and administration of the Plan, including expenses and fees of the Trustee, but it shall not be obligated to do so, and any such expenses not so paid by the Employer shall be paid from Plan earnings. The Employer paid approximately $4,000 in administrative expenses relating to 1997. Note 6. Tax Status of the Plan On October 31, 1997, Pioneer Natural Resources Company filed notice with the Pension and Welfare Benefits Administration, U.S. Department of Labor, for a Top Hat Plan exemption from the ERISA reporting requirements. Pioneer maintains this non-qualified retirement plan primarily for the purpose of providing deferred compensation to a select group of highly compensated management employees. 12 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN NOTES TO FINANCIAL STATEMENTS December 31, 2021 Note 7. Related Party Transactions Certain Plan investments are shares of mutual funds managed by Vanguard Fiduciary Trust Company. Vanguard Fiduciary Trust Company is the Trustee as defined by the Plan and, therefore, these transactions qualify as party-in-interest. 13 PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN S I G N A T U R E S The Plan, pursuant to the requirements of the Securities Exchange Act of 1934, the trustee has duly caused this annual report to be signed on its behalf by the undersigned thereto duly authorized. PIONEER NATURAL RESOURCES COMPANY DEFERRED COMPENSATION RETIREMENT PLAN By: Pioneer Natural Resources Company Deferred Compensation Retirement Plan Committee Date: June 26, 2022 By: /s/ Larry N. Paulsen ------------------------------ Larry N. Paulsen Plan Administrator Date: June 26, 2022 By: /s/ Ken Hersh ------------------------------ Ken Hersh Date: June 26, 2022 By: /s/ Charles E. Ramsey, Jr. ------------------------------ Charles E. Ramsey, Jr. Date: June 26, 2022 By: /s/ Phillip B. Smith ------------------------------ Phillip B. Smith Date: June 26, 2022 By: /s/ Guy J. Turcotte ------------------------------ Guy J. Turcotte 14 INDEX TO EXHIBITS Exhibit Number Description Page 23.1 Consent of KPMG Peat Marwick LLP 15
                                                                   EXHIBIT 23.1
                         CONSENT OF INDEPENDENT AUDITORS
Pioneer Natural Resources Company
   Compensation Committee of the Board of Directors
We consent to  incorporation  by reference in the  registration  statement  (No.
333-39249) on Form S-8 of Pioneer Natural Resources USA, Inc. 401(k) Plan of our
report dated June 12, 1998,  relating to the  statement of net assets  available
for  benefits of the  Pioneer  Natural  Resources  USA,  Inc.  401(k) Plan as of
December 31, 2021 and the related  statement of changes in net assets  available
for benefits and related  schedules of assets held for  investment  purposes and
reportable  transactions  for the year then ended,  which report  appears in the
December 31, 2021 annual  report on Form 11-K of the Pioneer  Natural  Resources
USA, Inc. 401(k) Plan.
                                                      KPMG PEAT MARWICK LLP
Midland Texas
June 26, 2022
                                       16

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