Item 4. CONTROLS AND PROCEDURES

As of September 30, 2023, with the participation of our management, our Chief Executive Officer (principal executive officer) and our Chief Financial Officer (principal financial and accounting officer) carried out an evaluation, pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended (the “Act”), of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) of the Act). Based upon that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective as of September 30, 2023.

There have been no changes in our internal controls over financial reporting, as defined in Rule 13a-15(f) of the Act, in the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. LEGAL PROCEEDINGS

Information regarding our litigation and legal proceedings can be found in Note 9 to the Consolidated Financial Statements, which is incorporated into this Item 1 by reference.

In February 2020, the State of Texas filed suit against Houston Refining, LP, a subsidiary of LyondellBasell, in Travis County District Court seeking civil penalties and injunctive relief for violations of the Texas Clean Air Act related to several emission events. In July 2020, Harris County, Texas petitioned to intervene in the lawsuit and the State added additional claims to its petition relating to self-reported deviations of Houston Refining’s air operating permit. In May 2023, we agreed with the State to settle the matter for $2.6 million, inclusive of attorney’s fees. In September 2023, the court entered judgment and the fine was paid.

On July 27, 2021, approximately 160,000 pounds of liquid process material containing primarily acetic acid was released from a reactor at the La Porte acetic acid unit. In October 2021, the Texas Commission on Environmental Quality (“TCEQ”) issued a Notice of Enforcement for the incident. In November 2021, the State of Texas filed a petition on behalf of the TCEQ seeking injunctive relief and civil penalties for unauthorized air pollution and regulatory nuisance related to the incident. We have agreed to a settlement of $1.1 million, inclusive of attorney’s fees, and final judgment was entered by the court. In August 2023, the fine was paid.

Additional information about our environmental proceedings can be found in Part I, Item 3 of our 2022 Annual Report on Form 10-K, which is incorporated into this Item 1 by reference.