Company: OXY-WT
Filing Date: 2025-08-07
Form Type: 424B2
Source: 0001628280-25-038901
Chunk: 22

Company: OCCIDENTAL PETROLEUM CORP /DE/
Filing Date: 2025-08-07
Form: 424B2
Chunk 22
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, 1986 (as amended by Form 8, dated December 22, 1986, Form 8, dated February 3, 1988, Form 8-B/A, dated July 12, 1993, Form 8-B/A, dated March 21, 1994 and Form 8-B/A, dated November 2, 1995 , and including any amendment or report filed with the SEC for the purpose of updating this description).

We also incorporate by reference all documents we may subsequently file with the SEC pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), from the date of this prospectus until the termination of each offering under this prospectus.

Information furnished under Item 2.02 or 7.01 (or corresponding information furnished under Item 9.01 or included as an exhibit) in any past or future current report on Form 8-K (including the current reports on Form 8-K listed above) that we file with the SEC, unless otherwise expressly specified in such report, is not incorporated by reference into this prospectus.

You can obtain any of the documents listed above from the SEC’s website at the address indicated above, or from Occidental by requesting them in writing or by telephone as follows:

#### Occidental Petroleum Corporation

#### Attention: Corporate Secretary

#### 5 Greenway Plaza, Suite 110

#### Houston, Texas 77046

#### Telephone: (713) 215-7000
These documents are available from Occidental without charge, excluding any exhibits to them unless the exhibit is specifically listed as an exhibit to the registration statement of which this prospectus forms a part. You can also find information about Occidental at our internet website at www.oxy.com. Information contained on this website does not constitute part of this prospectus.

You should rely only on the information contained or incorporated by reference into this prospectus, the prospectus supplement or any pricing supplement as having been authorized by us. We have not authorized any person, including any salesperson or broker, to provide information other than that provided in this prospectus, the

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prospectus supplement or any pricing supplement. We have not authorized anyone to provide you with different information. We are not making an offer of the securities in any jurisdiction where the offer is not permitted. You should assume that the information in this prospectus and