Company: OXY-WT
Filing Date: 2025-03-03
Form Type: 424B2
Source: 0001140361-25-006655
Chunk: 20

Company: OCCIDENTAL PETROLEUM CORP /DE/
Filing Date: 2025-03-03
Form: 424B2
Chunk 20
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 securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.**

<div align='center'>The date of this prospectus is July 29, 2022.</div>

TABLE OF CONTENTS

TABLE OF CONTENTS

| ABOUT THIS PROSPECTUS                                            |     |  1 |
| WHERE YOU CAN FIND MORE INFORMATION                              |     |  2 |
| FORWARD-LOOKING STATEMENTS                                       |     |  3 |
| ABOUT OCCIDENTAL                                                 |     |  5 |
| RISK FACTORS                                                     |     |  5 |
| USE OF PROCEEDS                                                  |     |  5 |
| DESCRIPTION OF SENIOR DEBT SECURITIES                            |     |  6 |
| DESCRIPTION OF SUBORDINATED DEBT SECURITIES                      |     | 16 |
| DESCRIPTION OF COMMON STOCK                                      |     | 26 |
| DESCRIPTION OF PREFERRED STOCK                                   |     | 29 |
| DESCRIPTION OF WARRANTS                                          |     | 31 |
| DESCRIPTION OF DEPOSITARY SHARES                                 |     | 32 |
| DESCRIPTION OF STOCK PURCHASE CONTRACTS AND STOCK PURCHASE UNITS |     | 33 |
| DESCRIPTION OF UNITS                                             |     | 34 |
| PLAN OF DISTRIBUTION                                             |     | 35 |
| LEGAL MATTERS                                                    |     | 36 |
| EXPERTS                                                          |     | 36 |

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#### TABLE OF CONTENTS

### ABOUT THIS PROSPECTUS
Unless otherwise stated or the context otherwise requires, the terms “Occidental,” the “Company,” “we,” “us,” and “our” refer to Occidental Petroleum Corporation and its subsidiaries. In the “Description of Senior Debt Securities,” “Description of Subordinated Debt Securities,” “Description of Common Stock,” “Description of Preferred Stock,” “Description of Warrants,” “Description of Depositary Shares,” “Description of Stock Purchase Contracts and Stock Purchase Units” and “Description of Units” sections of this prospectus, however, references to “Occidental,” the “Company,” “we,” “us” and “our” refer only to Occidental Petroleum Corporation and not to any of its subsidiaries.

This prospectus is part of a registration statement that we have filed with the SEC using a “shelf” registration process. Using this process, we may offer any combination of the securities described in this prospectus in one or more offerings in amounts to be determined