NAME: Michael B. McCallister

AGE: 58

HOME: Louisville, Ky.

FAMILY: Wife, Charlene, two adult children, a son and a daughter.

EDUCATION: Bachelor's degree from Louisiana Tech University, MBA from Pepperdine University.

CAREER: Joined Humana in 1974 as a finance specialist after graduating from college; named CEO in 2000, added chairman title in 2010.

HOBBIES: Skiing and golf. McCallister skis in Utah. He won the 2006 AT&T Pebble Beach National Pro-Am Golf Tournament.

LAST BOOK READ: The Big Short: Inside the Doomsday Machine, by Michael Lewis.

READING HABITS: McCallister likes to work through about four books at a time, one or two usually being trash fiction.