NL Industries(NL) - 2018 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934: For the fiscal year ended December 31, 2018 Commission file number 1-640 NL INDUSTRIES, INC. (Exact name of Registrant as specified in its charter) New Jersey 13-5267260 (State or other jurisdiction of incorporation or organization) Securities registered pursuant to Section 12(b) of the Act: | Title of each class | Name of each exchange on ...