OXY Occidental Petroleum Corporation

Issuer Free Writing Prospectus

Filed Pursuant to Rule 433

Registration No. 333-266420

Relating to the Preliminary Prospectus Supplement dated July 19, 2024

Occidental Petroleum Corporation

Pricing Term Sheet

July 23, 2024

$600,000,000 5.000% Senior Notes due 2027

$1,200,000,000 5.200% Senior Notes due 2029

$1,000,000,000 5.375% Senior Notes due 2032

$1,200,000,000 5.550% Senior Notes due 2034

$1,000,000,000 6.050% Senior Notes due 2054

*We expect that delivery of the notes will be made against payment therefor on or about July 26, 2024, which will be the third business day following the date of pricing of the notes (this settlement cycle being referred to as “T+3”). Pursuant to Rule 15c6-1 under the Exchange Act, trades in the secondary market generally are required to settle in one business day, unless the parties to that trade expressly agree otherwise. Accordingly, purchasers who wish to trade the notes on the date of this term sheet or the following business day will be required, by virtue of the fact that the notes initially will settle in T+3, to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of notes should consult their own advisors.

**Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time. See “Risk Factors—Risks Related to the Notes—Our credit ratings may not reflect all risks of an investment in the notes and there is no protection in the indenture for holders of the notes in the event of a ratings downgrade. A downgrade in our credit rating could negatively impact our cost of and ability to access capital.” in the Company’s preliminary prospectus supplement dated July 19, 2024.

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The Company has filed a registration statement (including a prospectus) and a related preliminary prospectus supplement with the U.S. Securities and Exchange Commission (“SEC”) for the offering to which this communication relates. Before you invest, you should read the preliminary prospectus supplement, the accompanying prospectus in that registration statement and other documents the Company has filed with the SEC for more complete information about the Company and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the Company, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and the related preliminary prospectus supplement if you request it by calling BofA Securities, Inc. toll-free at 1-800-294-1322, J.P. Morgan Securities LLC collect at 1-212-834-4533, MUFG Securities Americas Inc. toll-free at 1-877-649-6848 or SMBC Nikko Securities America, Inc. toll free at 1-888-868-6856.

This pricing term sheet supplements, and should be read in conjunction with, the Company’s preliminary prospectus supplement dated July 19, 2024 and the accompanying prospectus dated July 29, 2022 and the documents incorporated by reference therein.

Any legends, disclaimers or other notices that may appear below are not applicable to this communication and should be disregarded. Such legends, disclaimers or other notices have been automatically generated as a result of this communication having been sent via Bloomberg or another system.

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