Sec Form 4 Filing - Gatto Joseph C. Jr. @ Callon Petroleum Co - 2024-04-01

FORM 4 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 Gatto Joseph C. Jr. 2. Issuer Name and Ticker or Trading Symbol Callon Petroleum Co [ CPE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 2000 W. SAM HOUSTON PKWY. S., SUITE 2000 3. Date of Earliest Transaction (MM/DD/YY) 04/01/2024 (Street) HOUSTON, TX77042 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 04/01/2024 D 134,323 D 0 D

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 RSU - Stock ( 2 ) 04/01/2024 D 259,080 ( 2 ) ( 2 ) Common Stock 259,080 ( 2 ) 0 D 2023 Market Stock Units ( 3 ) 04/01/2024 D 100,000 ( 3 ) ( 3 ) Common Stock 100,000 ( 3 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gatto Joseph C. Jr. 2000 W. SAM HOUSTON PKWY. S. SUITE 2000 HOUSTON, TX77042 X President and CEO Signatures /s/ Joseph C. Gatto, Jr. by Lucas A. Fried, as Attorney-in-Fact 04/01/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On April 1, 2024, pursuant to the Agreement and Plan of Merger, dated as of January 3, 2024 (the "Merger Agreement"), by and between APA Corporation ("APA"), Astro Comet Merger Sub Corp., a wholly owned subsidiary of APA ("Merger Sub"), and Callon Petroleum Company (the "Company"), Merger Sub merged with and into the Company (the "Merger"), with the Company surviving and continuing as the surviving corporation in the Merger. Pursuant to the Merger Agreement, at the effective time of the Merger (the "Effective Time"), each outstanding share of common stock of Callon (other than Excluded Shares (as defined in the Merger Agreement)) converted into the right to receive, without interest, 1.0425 shares (the "Exchange Ratio") of common stock of APA, with cash in lieu of fractional shares. The closing price per share of APA common stock on the Nasdaq Global Select Market on March 28, 2024, the day prior to the Effective Time, was $34.38. ( 2 )Pursuant to the Merger Agreement, at the Effective Time, each Company restricted stock unit relating to Company common stock ("Company RSU") outstanding as of immediately prior to the Effective Time was assumed by APA and converted into a number of restricted stock units with respect to shares of APA common stock (such restricted stock unit, a "Converted RSU") equal to the product of the number of shares of Company common stock subject to such Company RSU immediately prior to the Effective Time multiplied by the Exchange Ratio, rounded to the nearest number of whole shares. Each such Converted RSU will continue to be governed by the same terms and conditions as were applicable to the corresponding Company RSU immediately prior to the Effective Time. ( 3 )Pursuant to the Merger Agreement, at the Effective Time, each market stock unit (each, a "Company MSU") was assumed by APA and converted into a number of Converted RSUs equal to the product of the target performance level multiplied by the Exchange Ratio, rounded to the nearest number of whole shares. Each such Converted RSU will continue to be governed by the same terms and conditions as were applicable to the corresponding Company MSU immediately prior to the Effective Time.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

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

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