Item 4. Controls and Procedures

Occidental's President and Chief Executive Officer and its Senior Vice President and Chief Financial Officer supervised and participated in Occidental's evaluation of the effectiveness of its disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) as of the end of the period covered by this report. Based upon that evaluation, Occidental's President and Chief Executive Officer and its Senior Vice President and Chief Financial Officer concluded that Occidental's disclosure controls and procedures were effective as of September 30, 2021.

There has been no change in Occidental's internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934) during the three months ended September 30, 2021, that has materially affected, or is reasonably likely to materially affect, Occidental's internal control over financial reporting.

Occidental is converting legacy Anadarko's information into Occidental's primary Enterprise Resource Planning system during the first quarter of 2022. Certain existing internal controls will be modified and new controls will be implemented.

Part II Other Information

Item 1. Legal Proceedings

For information regarding legal proceedings, see Note 8 - Lawsuits, Claims, Commitments and Contingencies in the notes to the consolidated condensed financial statements in Part I, Item 1 of this Form 10-Q.