Sec Form 4 Filing - BERKSHIRE HATHAWAY INC @ OCCIDENTAL PETROLEUM CORP /DE/ - 2024-12-17

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 BERKSHIRE HATHAWAY INC 2. Issuer Name and Ticker or Trading Symbol OCCIDENTAL PETROLEUM CORP /DE/ [ OXY] 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) 3555 FARNAM STREET 3. Date of Earliest Transaction (MM/DD/YY) 12/17/2024 (Street) OMAHA, NE68131 4. If Amendment, Date Original Filed (MM/DD/YY) 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 12/17/2024 P 2,477,362 A $ 46.2542 ( 1 ) 257,758,886 I See footnotes ( 2 ) ( 3 ) ( 4 ) Common Stock 12/18/2024 P 2,430,924 A $ 46.1563 ( 5 ) 260,189,810 I See footnotes ( 2 ) ( 3 ) ( 4 ) Common Stock 12/18/2024 P 374,589 A $ 46.9172 ( 6 ) 260,564,399 I See footnotes ( 2 ) ( 3 ) ( 4 ) Common Stock 12/19/2024 P 3,372,309 A $ 45.5458 ( 7 ) 263,936,708 I See footnotes ( 2 ) ( 3 ) ( 4 ) Common Stock 12/19/2024 P 241,706 A $ 46.3088 ( 8 ) 264,178,414 I See footnotes ( 2 ) ( 3 ) ( 4 ) Series A Preferred Stock 84,897 I See footnotes ( 3 ) ( 4 ) ( 9 )

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 Warrants to Purchase Shares of Common Stock $ 59.624 ( 10 ) ( 11 ) ( 11 ) Common Stock 83,858,848.81 ( 10 ) 83,858,848.81 ( 10 ) I See footnotes ( 3 ) ( 4 ) ( 12 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BERKSHIRE HATHAWAY INC 3555 FARNAM STREET OMAHA, NE68131 X BUFFETT WARREN E 3555 FARNAM STREET OMAHA, NE68131 X Signatures /s/ Warren E. Buffett, on behalf of himself and each other reporting person hereunder 12/19/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $45.8000 to $46.5600. The Reporting Persons undertake to provide Occidental Petroleum Corporation ("Occidental"), any security holder of Occidental, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 1 to this Form 4. ( 2 )The shares of the issuer's common stock reported on this form are held by Berkshire Hathaway Inc. ("Berkshire") indirectly through its subsidiary, National Indemnity Company. ( 3 )As Berkshire is in the chain of ownership of each subsidiary listed, it may be deemed presently to both beneficially own and have a pecuniary interest in all shares and derivative securities, as applicable, presently directly owned by such subsidiaries. Warren E. Buffett, as the controlling stockholder of Berkshire, may be deemed presently to beneficially own, but only to the extent he has a pecuniary interest in, the shares and derivative securities, as applicable, presently owned by each of these subsidiaries. Mr. Buffett disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein. In addition, in order to avoid double counting, all shares and derivative securities, as applicable, reported as being owned by each subsidiary listed only reflect shares or derivative securities, as applicable, that are owned directly by such subsidiary, ( 4 )(Continued from footnote 3) and do not reflect any shares that such subsidiary may be deemed to beneficially own by virtue of ownership or control of any other subsidiary otherwise reported on this form. ( 5 )The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $45.8100 to $46.8099. The Reporting Persons undertake to provide Occidental, any security holder of Occidental, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 5 to this Form 4. ( 6 )The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $46.8100 to $47.0000. The Reporting Persons undertake to provide Occidental, any security holder of Occidental, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 6 to this Form 4. ( 7 )The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $45.1726 to $46.1725. The Reporting Persons undertake to provide Occidental, any security holder of Occidental, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 7 to this Form 4. ( 8 )The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $46.1750 to $46.6300. The Reporting Persons undertake to provide Occidental, any security holder of Occidental, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote 8 to this Form 4. ( 9 )The shares of the issuer's preferred stock reported on this form were issued on August 8, 2019 and are held by Berkshire indirectly through its subsidiary, National Indemnity Company. ( 10 )The warrants contain provisions that adjust the exercise price and the number of shares of the issuer's common stock issuable on exercise upon the occurrence of certain events. As such, the exercise price and the number of shares of the issuer's common stock issuable on exercise as reported on this form are subject to change upon the occurrence of future events in accordance with the terms of the warrants. The warrants were initially for 80,000,000 shares with an initial exercise price of $62.50 per share. On June 26, 2020, the issuer's board of directors declared a distribution to its common shareholders of warrants to purchase additional shares of common stock, which distribution resulted in an anti-dilution adjustment to the warrants, which lowered the exercise price to $59.624 and increased the number of shares issuable on exercise of the warrants to 83,858,848.81. ( 11 )The warrants were issued on August 8, 2019 and are exercisable at the applicable holder's option, in whole or in part, until the first anniversary of the date on which no shares of the issuer's series A preferred stock remain outstanding, at which time the warrants expire. ( 12 )The warrants to purchase the issuer's common stock reported on this form are held by Berkshire indirectly through its subsidiary, National Indemnity Company.

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

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