American philanthropist, investor and entrepreneur Clayton Lee Mathile has an estimated net worth of $3.3 billion as of April 2016, according to Forbes. He is known to lead The Iams Company which he later sold to Proctor & Gamble in 1999 for $2.3 billion.

In 1970, he started working as a sales manager for The Iams Food Company, a regional pet food manufacturing company based in Dayton, Ohio. Over time, Clayton Lee Mathile became the company's chairman, sole owner and chief executive officer. He is one of the most popular and successful entrepreneurs who have led a company that operates two major brands, Eukanuba and Iams.

Clayton Lee Mathile was born on January 11, 1941 in Northwest Ohio. After attending Portage High School, he studied at Ohio Northern University where he became a part of the university's basketball team. Eventually, he transferred to a business school. He is currently married to MaryAnn Maas with whom he has five children.