Effective June 8, 2012, Kronos Worldwide Inc's board of directors increased the size of its board from seven to eight and elected Kern Wildenthal, M.D., Ph.D. to fill the newly created vacancy and to serve as a director until his successor is elected and qualified or his earlier resignation, removal or death. The board of directors also appointed Dr. Wildenthal to serve on its audit committee and management development and compensation committee. Since 2008, Dr. Wildenthal has served as president of the Southwestern Medical Foundation. From 1986 to 2008, he served as president of The University of Texas Southwestern Medical Cente.