Sec Form 3/A Filing - CANADA PENSION PLAN INVESTMENT BOARD @ CIVITAS RESOURCES, INC. - 2021-11-01

FORM 3/A Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person CANADA PENSION PLAN INVESTMENT BOARD 2. Issuer Name and Ticker or Trading Symbol CIVITAS RESOURCES, INC. [ CIVI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) ONE QUEEN STREET EAST, SUITE 2500, 3. Date of Earliest Transaction (MM/DD/YY) 11/01/2021 (Street) TORONTO,, A6M5C 2W5 4. If Amendment, Date Original Filed (MM/DD/YY) 11/04/2021 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 21,422,919 I See footnotes( 1 )( 2 )( 3 )( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other CANADA PENSION PLAN INVESTMENT BOARD ONE QUEEN STREET EAST, SUITE 2500 TORONTO,, A6M5C 2W5 X CPPIB Crestone Peak Resources Canada Inc. C/O CANADA PENSION PLAN INVESTMENT BOARD ONE QUEEN STREET EAST, SUITE 2500 TORONTO,, A6M5C 2WC X Signatures Canada Pension Plan Investment Board, By: /s/ Ryan Barry, Managing Director, Head of Legal, Canada Pension Plan Investment Board 11/22/2021 Signature of Reporting Person Date CPPIB Crestone Peak Resources Canada Inc., By: /s/ Ryan Barry, Authorized Signatory 11/22/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 3 amendment is being filed to amend the original Form 3 filed on November 4, 2021 which incorrectly stated the number of shares of the issuer's common stock ("Shares") beneficially owned by Canada Pension Plan Investment Board ("CPPIB") as 21,398,753 Shares. A Form 4 was filed by CPPIB on November 4, 2021 to disclose an acquisition of beneficial ownership of 24,166 Shares on November 2, 2021. CPPIB subsequently learned that it may be deemed to have acquired beneficial ownership of such 24,166 Shares on November 1, 2021 and such Shares should have been included on the Form 3 as beneficially owned by CPPIB. The number of Shares beneficially owned by CPPIB Crestone Peak Resources Canada Inc. ("CP Canada") remains the same as reported in the original Form 3 (and as set forth in footnote 2 below). ( 2 )The securities consist of (1) 21,398,753 Shares held of record by CP Canada, a wholly-owned subsidiary of CPPIB and (2) 24,166 Shares held of record by CPPIB MAP Cayman SPC ("MAP"), a wholly-owned subsidiary of CPPIB. ( 3 )CP Canada and CPPIB may be deemed to share beneficial ownership over the 21,398,753 Shares held by CP Canada. CP Canada has no beneficial ownership over the 24,166 Shares held by MAP. ( 4 )The 24,166 Shares held by MAP were acquired on behalf of MAP as a result of investment activities of an investment manager unaffiliated with CPPIB who has discretionary authority in respect of such investment activities. CPPIB has control over the termination of such investment management agreement and may potentially acquire control over the 24,166 Shares held by MAP within a period of 60 days or less in connection with such termination. Accordingly, CPPIB may be deemed to beneficially own such 24,166 Shares.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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