Item 6. Exhibits






2.1#			Purchase and Sale Agreement, dated as of October 1, 2025, by and among Berkshire Hathaway Inc., Occidental Chemical Holding, LLC and, solely for the limited purposes therein, Environmental Resource Holdings, LLC (filed as Exhibit 2.1 to the C urrent R eport on Form 8-K dated October 3, 2025, File No. 1-9210).

31.1*			Certification of CEO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*			Certification of CFO Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1**			Certifications of CEO and CFO Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS*			Inline XBRL Instance Document.

101.SCH*			Inline XBRL Taxonomy Extension Schema Document.

101.CAL*			Inline XBRL Taxonomy Extension Calculation Linkbase Document.

101.LAB*			Inline XBRL Taxonomy Extension Label Linkbase Document.

101.PRE*			Inline XBRL Taxonomy Extension Presentation Linkbase Document.

101.DEF*			Inline XBRL Taxonomy Extension Definition Linkbase Document.

104*			Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).

Schedules and exhibits have been omitted pursuant to Item 601(b)(2) of Regulation S-K. The registrant agrees to furnish supplementally to the SEC a copy of any omitted schedule or exhibit upon request by the SEC.

Filed herewith.

** Furnished herewith.


SIGNATURES

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 thereunto duly authorized.


			OCCIDENTAL PETROLEUM CORPORATION


November 10, 2025			/s/ Christopher O. Champion
			Christopher O. Champion
			Vice President, Chief Accounting Officer and Controller

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