Kronos Worldwide, Inc. announced that on March 13, 2020, Kelly D. Luttmer, executive vice president and chief tax officer of the registrant, provided notice to the registrant that, effective as of June 1, 2020, she will retire as an officer of the registrant.  In connection with her retirement from the registrant, Ms. Luttmer has also provided notice to Valhi, Inc. (“Valhi”), NL Industries, Inc. (“NL”) and CompX International Inc. (“CompX”), affiliates of the registrant, that she will also retire as an officer of those companies as of such date.  Following such retirements, Ms. Luttmer will continue to be employed by Contran Corporation (“Contran”), the privately-held parent corporation of the registrant, and will continue to serve as executive vice president and chief tax officer of Contran. Following such retirement notice of Ms. Luttmer, the registrant’s board of directors took action, also effective as of June 1, 2020, to: re-elect Kristin B. McCoy as vice president, tax of the registrant; and designate Ms. McCoy as an executive officer of the registrant. Ms. McCoy, age 47, has served in various tax accounting positions with various companies related to the registrant and Contran since 2003.  Beginning June 1, 2020, she will also serve as an executive officer of Valhi as its vice president, tax.