Company: OXY-WT
Filing Date: 2025-07-28
Form Type: S-3ASR
Source: 0001628280-25-036198
Chunk: 1

Company: OCCIDENTAL PETROLEUM CORP /DE/
Filing Date: 2025-07-28
Form: S-3ASR
Chunk 1
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If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer ☒ Accelerated filer ☐

Non-accelerated filer ☐ (Do not check if a smaller reporting company) Smaller reporting company ☐

Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

### EXPLANATORY NOTE
We are filing this registration statement solely to replace our registration statement on Form S-3 (File No. 333-266420), filed with the U.S. Securities and Exchange Commission on July 29, 2022 (the “Prior Registration Statement”), that is scheduled to expire on July 29, 2025, pursuant to Rule 415(a)(5) under the Securities Act of 1933, as amended (the “Securities Act”). In accordance with Rule 415(a)(6), effectiveness of this registration statement will be deemed to terminate the Prior Registration Statement.

Pursuant to Rule 415(a)(6) under the Securities Act, we are registering on this registration statement an aggregate of 31,990,880 unsold shares of common stock (the “Carry-Forward Securities”) previously registered under the Prior Registration Statement to