Item 3. Legal Proceedings.

Environmental Matters

From time to time, we and our joint ventures receive notices or inquiries from government entities regarding alleged violations of environmental laws and regulations pertaining to, among other things, the disposal, emission and storage of chemical and petroleum substances, including hazardous wastes. U.S. Securities and Exchange Commission rules require disclosure of certain environmental matters when a governmental authority is a party to the proceedings and the proceedings involve potential monetary sanctions that we reasonably believe could exceed $300,000. The matters below are disclosed solely pursuant to that requirement and we do not believe that any of these proceedings will have a material impact on the Company’s Consolidated Financial Statements.

In April 2025, the State of Texas filed suit against our subsidiary, Equistar Chemicals, L.P., in Travis County District Court seeking civil penalties and injunctive relief for violations of the Texas Clean Air Act related to several alleged emission events between May 2018 and April 2021.

In May 2025, the Texas Commission on Environmental Quality issued a proposed Agreed Order to Equistar Chemicals, L.P. to resolve alleged air permitting exceedances at the La Porte Complex between 2020 and 2022.

In November 2025, the Illinois Attorney General issued a proposed Stipulation to Equistar Chemicals, L.P. to resolve alleged air exceedances at the Morris Plant between 2018 and 2024.

Litigation and Other Matters

Information regarding our litigation and other legal proceedings can be found in Note 19 to the Consolidated Financial Statements.