On March 18, 2019, Gregory M. Swalwell, executive vice president and chief financial officer of Kronos Worldwide, Inc., provided notice to the company that, effective as of June 1, 2019, he will retire as an officer of the company. Following such retirement notice of Mr. Swalwell, the company's board of directors took action to elect: James W. Brown, currently CompX's vice president, chief financial officer and controller and Valhi's vice president, business planning and strategic initiatives, as the company's senior vice president and chief financial officer, effective as of June 1, 2019; Tim C. Hafer, previously the registrant's vice president and controller, as the company's senior vice president and controller, effective as of March 21, 2019; and Michael S. Simmons, currently also director of special projects of Contran, as the company's vice president, finance, effective as of March 21, 2019.