NL Industries, Inc.

Results of Operations and Financial Condition. ​ The registrant hereby furnishes the information set forth in its press release entitled “NL Reports Third Quart

Financial Statements and Exhibits. ​ ​ ​ ​ ​ (d) Exhibits ​ ​ ​ ​ ​ ​ ​ Item No. Description ​ ​ ​ ​ ​ 99.1 ​ Press release dated November 6, 2025 entitled “NL