On February 22, 2023, Kronos Worldwide, Inc. board of directors elected Brian W. Christian as the registrant's executive vice president and chief operating officer. Mr. Christian was formerly the registrant's executive vice president and chief strategy officer. James M. Buch continues to serve as the registrant's president and chief executive officer.

Mr. Christian, age 44, has served as the registrant's chief operating officer since February 22, 2023 and as its executive vice president since 2016. He previously served as the registrant's chief strategy officer from 2021 to February 2023, as its vice president, strategic business development from 2011 to 2016, and as its manager of strategic and financial planning from 2009 to 2011. He currently serves as senior vice president of Contran Corporation (“Contran”), the parent corporation of the registrant's consolidated tax group.

Mr. Christian has served in strategic and financial planning positions (including officer positions) with various companies related to the registrant and Contran since 2006. Mr. Christian is an employee of Contran and provides his services to the registrant under an intercorporate services agreement between the registrant and Contran. For a description of the intercorporate services agreement, see “Certain Relationships and Transactions” in the registrant's 2022 proxy statement, which description is incorporated herein by reference.

In addition, for a discussion of potential conflicts of interest of officers who serve more than one corporation, see “Certain Relationships and Transactions” in the 2022 proxy statement, which discussion is also incorporated herein by reference.