NL INDUSTRIES INC

In addition to the matters discussed below, refer to Note 13 to our Condensed Consolidated Financial Statements and our 2023 Annual Report for descriptions of certain legal proceedings.

In May 2024, we were served inPhilip Palmeri v. NL Industries, Inc.(Supreme Court of Niagara County, New York, Case No. E183238). In this lawsuit, the plaintiff asserts that radioactive material allegedly originating at a former NL facility in Niagara Falls, New York, caused the wrongful death of plaintiff’s spouse and diminished the value of plaintiff’s residential property located in

Lewiston, New York. The complaint alleges that NL is liable under theories of strict liability, negligence, private nuisance, and trespass. NL has denied liability and will defend vigorously against all claims.

Sunset Commercial, LLC v. Stauffer Management Co. In May 2024, the complaint against NL was dismissed.

In June 2024, CompX was served inCity of Columbia d/b/a Columbia Water v. 3M Company, Inc., et al.(Court of Common Pleas, Richland County, South Carolina, No. 2024-CP-40-03392). This is a lawsuit brought by a municipal water agency against the manufacturers of perfluoroalkyl and polyfluoroalkyl substances (known as “PFAS”), as well as dozens of companies that allegedly used PFAS-containing products in their manufacturing processes. The water agency asserts that it must incur costs to remove PFAS from its water supply. The complaint alleges that CompX used products containing PFAS in its manufacturing facility in Mauldin, South Carolina, and that at least some PFAS attributable to CompX operations has traveled more than 90 miles to plaintiff’s water treatment facility in Columbia, South Carolina. Plaintiff does not allege that CompX has failed to comply with, or has violated, any regulation, permit or statute. Plaintiff instead asserts claims under common law theories of negligence, nuisance and trespass. CompX intends to deny liability and will defend vigorously against all claims.