UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 8-K
                                 CURRENT REPORT
     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
       Date of Report (Date of earliest event reported): January 24, 2022
                        PIONEER NATURAL RESOURCES COMPANY
                       -----------------------------------
             (Exact name of Registrant as specified in its charter)
             DELAWARE                     1-13245              75-2702753
- ----------------------------------      -----------      ----------------------
(State or other jurisdiction of         Commission          (I.R.S. Employer
incorporation or organization)          File Number      Identification Number)
1400 WILLIAMS SQUARE WEST, 5205 N. O'CONNOR BLVD., IRVING, TEXAS       75039
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           (Address of principal executive offices)                  (Zip code)
       Registrant's Telephone Number, including area code : (972) 444-9001
                                 Not applicable
              (Former name, former address and former fiscal year,
                          if changed since last report)

PIONEER NATURAL RESOURCES COMPANY TABLE OF CONTENTS Page Item 7. Financial Statements, Pro Forma Financial Information and Exhibits: (c) Exhibits............................................. 3 Item 9. Regulation FD Disclosure.................................. 3 Signatures......................................................... 4 Exhibit Index...................................................... 5 2

PIONEER NATURAL RESOURCES COMPANY ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS (c) Exhibits 99.1 Press Release dated January 24, 2022 ITEM 9. REGULATION FD DISCLOSURE On January 24, 2001, Pioneer Natural Resources Company issued a press release reporting the Company's proved oil and gas reserves as of December 31, 2000; and, for the year then ended, the Company's reserve replacement percentage, finding costs per equivalent barrel of added reserves and costs incurred for oil and gas producing activities. The press release is attached hereto as Exhibit 99.1 and incorporated by reference herein. 3

PIONEER NATURAL RESOURCES COMPANY S I G N A T U R E S Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. PIONEER NATURAL RESOURCES COMPANY Date: January 24, 2022 By: /s/ RICH DEALY ----------------------------------- Rich Dealy Vice President and Chief Accounting Officer 4

PIONEER NATURAL RESOURCES COMPANY EXHIBIT INDEX Exhibit No. Description 99.1* Press Release dated January 24, 2022 - ------------- * filed herewith 5

                                                                  EXHIBIT 99.1
                                  NEWS RELEASE
                     Investor Relations Contact: Susan Spratlen   (972) 444-9001
          Pioneer Replaces 167% of Production in 2000 at $4.66 per BOE
Dallas, Texas, January 24, 2022 -- Pioneer Natural Resources Company ("Pioneer")
(NYSE:PXD)  (TSE:PXD)  announced  that as of December 31, 2000, its total proved
oil and gas reserves were 628 million  barrels oil  equivalent  (MMBOE),  or 3.8
trillion cubic feet (Tcf) natural gas equivalent,  including 312 million barrels
(MMBbls)  of crude oil and  natural  gas  liquids  and 1.9 Tcf of  natural  gas.
Discounted future net cash flow (present value at 10%) was $7.02 billion at year
end. In 2000, the Company added 73 MMBOE of proved  reserves.  Proved  developed
reserves account for 77% of total proved reserves.
"These  outstanding  results  reflect our success at refocusing on the drill bit
for growth.  Our five-year  average drill bit finding and development (F&D;) cost
(excluding  acquisitions)  is $5.52  per BOE.  During  2001,  we plan a  capital
program of $430 million and plan to drill  approximately  465 wells including 25
exploration  wells,  exposing  Pioneer to significant new reserves.  We are also
moving  recent  discoveries  in the  deepwater  Gulf of Mexico and South  Africa
toward first  production in 2002 and 2003," stated Scott D. Sheffield,  Chairman
and CEO.
Pioneer  replaced 167% of its production  during 2000 at a finding cost of $4.66
per BOE. Costs incurred during 2000 totaled $340 million,  including $67 million
for  acquisitions  and $273 million for development and exploration  activities.
Excluding  acquisitions,  2000 finding cost was $4.16 per BOE.  Year-end  proved
reserves and costs incurred are detailed in the attached supplemental schedule.
Reserves as stated above are based on year-end  NYMEX prices for oil and natural
gas of $26.69 per barrel and $9.95 per Mcf,  respectively.  Under a supplemental
case using $5.00 per Mcf for natural gas, total proved  reserves were 623 MMBOE,
F&D; costs averaged $5.03 per BOE,  reserve  replacement  was 155% and discounted
future net cash flow was $4.3 billion.
During 2000, Pioneer drilled 296 wells with 90% success worldwide,  including 83
exploration and extension wells with 73% success.  The Company drilled 176 wells
in the U.S.,  35 wells in Canada,  84 wells in  Argentina  and one well in South
Africa.  Domestic  drilling  included 92  Spraberry  oil wells,  54 wells in the
Hugoton/West  Panhandle  gas  field  and 30  wells  in  other  domestic  fields.
Internationally,  95 of 120 wells were  successful.  International  drilling was
primarily  focused on core areas in the Neuquen Basin in Argentina and Northeast
British Columbia in Canada.  Pioneer acquired 7.4 million BOE of proved reserves
for $4.89 per BOE  primarily  through the purchase of its interest in the Camden
Hills  discovery  in the  deepwater  GOM and  through a purchase  of  additional
interests in the Chinchaga field in Canada.
Pioneer is a large  independent oil and gas  exploration and production  company
with  operations  in the United  States,  Canada,  Argentina  and South  Africa.
Pioneer's  headquarters  are in Dallas.  For more  information,  visit Pioneer's
website at www.pioneernrc.com.
Except for historical information contained herein, the statements in this Press
Release are forward-looking statements that are made pursuant to the Safe Harbor
Provisions   of  the  Private   Securities   Litigation   Reform  Act  of  1995.
Forward-looking  statements,  and the  business  prospects  of  Pioneer  Natural
Resources Company,  are subject to a number of risks and uncertainties which may
cause the Company's  actual results in future periods to differ  materially from
the forward-looking  statements.  These risks and uncertainties  include,  among
other  things,  volatility  of oil and gas  prices,  product  supply and demand,
competition,  government regulation or action, litigation, the costs and results
of  drilling  and  operations,  the  Company's  ability to replace  reserves  or
implement its business plans, access to and cost of capital, uncertainties about
estimates of reserves, quality of technical data, and environmental risks. These
and other risks are described in the  Company's  10-K and 10-Q Reports and other
filings with the Securities and Exchange Commission.

PIONEER NATURAL RESOURCES COMPANY SUPPLEMENTAL INFORMATION Year ended December 31, 2021 South Africa United & Other States Argentina Canada Foreign Total --------- --------- -------- ------- ---------- Proved reserves: Oil (MBbls): Balance, January 1, 2000............ 127,878 25,644 1,266 - 154,788 Revisions of previous estimates: Related to price changes......... 6,513 - (79) - 6,434 Other............................ 7,689 (2,508) 497 - 5,678 Purchases of mineral-in-place....... 841 - - - 841 New discoveries and extensions...... 4,819 7,908 53 5,552 18,332 Production.......................... (8,989) (3,238) (308) - (12,535) Sales of mineral-in-place........... (401) - - - (401) --------- ------- ------- ------- --------- Balance, December 31, 2000.......... 138,350 27,806 1,429 5,552 173,137 Natural Gas Liquids (MBbls): Balance, January 1, 2000............ 131,188 4,153 2,704 - 138,045 Revisions of previous estimates: Related to price changes......... 4,459 - (40) - 4,419 Other............................ 634 3,919 51 - 4,604 Purchases of mineral-in-place....... 396 - 140 - 536 New discoveries and extensions...... - 158 85 - 243 Production.......................... (7,883) (193) (303) - (8,379) Sales of mineral-in-place........... (342) - - - (342) --------- ------- ------- ------- --------- Balance, December 31, 2000.......... 128,452 8,037 2,637 - 139,126 Natural Gas (MMcf): Balance, January 1, 2000............ 1,314,842 415,620 145,251 - 1,875,713 Revisions of previous estimates: Related to price changes......... 29,055 - (10,116) - 18,939 Other............................ 34,857 (15,558) 103 - 19,402 Purchases of mineral-in-place....... 28,071 - 7,768 - 35,839 New discoveries and extensions...... 66,486 43,914 6,132 - 116,532 Production.......................... (83,930) (35,694) (16,219) - (135,843) Sales of mineral-in-place........... (35,054) - - - (35,054) --------- ------- ------- ------- --------- Balance, December 31, 2000.......... 1,354,327 408,282 132,919 - 1,895,528 Equivalent Barrels (MBOE): Balance, January 1, 2000............ 478,206 99,067 28,179 - 605,452 Revisions of previous estimates: Related to price changes......... 15,814 - (1,805) - 14,009 Other............................ 14,133 (1,182) 565 - 13,516 Purchases of mineral-in-place....... 5,916 - 1,435 - 7,351 New discoveries and extensions...... 15,900 15,385 1,160 5,552 37,997 Production.......................... (30,860) (9,380) (3,315) - (43,555) Sales of mineral-in-place........... (6,586) - - - (6,586) --------- ------- ------- ------- --------- Balance, December 31, 2000.......... 492,523 103,890 26,219 5,552 628,184 ========= ======= ======= ======= ========= Costs incurred for oil and gas producing activities ($000): Property acquisition costs: Proved.............................. $ 26,102 $ 1,169 $ 8,709 $ - $ 35,980 Unproved............................ 28,199 520 2,506 - 31,225 --------- ------ ------ ------ ------- 54,301 1,689 11,215 - 67,205 Exploration costs...................... 65,023 35,406 6,744 23,597 130,770 Development costs...................... 84,798 31,335 25,632 - 141,765 --------- ------ ------ ------ ------- $ 204,122 $68,430 $43,591 $23,597 $339,740 ========= ====== ====== ====== ======= Reserve replacement percentage........... 168% 151% 41% n/a 167% ========= ====== ====== ======= Finding costs per BOE of proved reserves added......................... $ 3.94 $ 4.82 $ 32.17 $ 4.25 $ 4.66 ========= ====== ====== ====== =======

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