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Clay Mathile

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Adapted from the English Wikipedia article Clay Mathile, available under CC BY-SA 4.0Updated 11 August 2025
Clayton Lee Mathile
Born (1941-01-11) 11 January 1941 (age 85)
Portage, Ohio, U.S.
Died26 August 2023(2023-08-26) (aged 82)
Occupation(s)Entrepreneur, businessman
Known forExpanding The Iams Company and selling it to Procter & Gamble
Notable workLeadership of The Iams Company

Clayton Lee Mathile (pronounced [Muh-til]) (January 11, 1941 – August 26, 2023) was an American billionaire entrepreneur renowned for expanding Iams to nearly $1 billion in revenue before selling it to Procter & Gamble (P&G) in 1999 for $2.3 billion. This transaction represented the largest all-cash acquisition in P&G's history at that time.

Early life and education

Born on January 11, 1941, Clayton Lee Mathile was the firstborn child of Wilbert "Bill" Ray Mathile and Helen Good Mathile in Portage, Ohio, where his family owned a 40-acre farm.

He completed high school at Portage High School at age 16, graduating as valedictorian among 14 students and receiving honorable mention on the all-state basketball team. Mathile enrolled at Ohio Northern University in Ada, Ohio, initially pursuing mechanical engineering before switching to business studies. After losing a scholarship opportunity, he supported himself by pumping gas and graduated a quarter early with a business degree in February 1962.

Early career

Mathile started his professional journey as an accountant at a General Motors facility in Toledo, Ohio. He then spent seven years at Campbell Soup Company focusing on cost accounting, inventory management, and procurement.

In 1970, he assumed a leadership position at The Iams Food Company, a modest regional pet food producer located in Dayton, Ohio. To boost brand awareness, Mathile handed out product samples at dog shows with assistance from his children. When ingredient shortages threatened the company’s operations in 1975, he acquired a 50% ownership stake from founder Paul Iams for $100,000 and persuaded him to establish a dedicated manufacturing facility.

Corporate leadership

Under Mathile’s guidance, The Iams Company experienced significant expansion; by 1982, when he became sole proprietor and CEO, sales had increased to $13 million. He prioritized superior product quality, invested heavily in research and development, and implemented focused marketing strategies targeting pet owners, breeders, and veterinarians. A full money-back guarantee was introduced alongside a customer service team addressing pet care inquiries beyond nutrition.

He developed a nationwide distribution system and ensured timely payments to suppliers within 30 days to maintain access to premium ingredients during shortages. Mathile also financed a research center dedicated to advancing pet nutrition for both Iams and Eukanuba brands.

Eventually, Mathile appointed Tom MacLeod as CEO while assuming the role of chairman. By 1999, The Iams Company commanded a 5.7% share of the U.S. pet food market and exported products to 75 countries worldwide. Upon selling the company to Procter & Gamble for $2.3 billion, Mathile allocated $100 million to employees, committed another $100 million toward community initiatives in Dayton, and distributed portions of the proceeds among his children.

Philanthropy

Mathile held trustee positions on nonprofit boards concentrating on education, nutrition advancements, medical research innovations, and social justice causes.

Political activity

Together with his wife, Mathile contributed $26,600 to Donald Trump’s presidential campaign in 2020.

Other businesses

The Mathile family manages additional enterprises under Myrian Capital based in Dayton, Ohio, an investment firm founded and chaired by their youngest son Mike Mathile.

Personal life and death

Mathile wed MaryAnn Maas in 1962. Together, they raised five children and resided in Brookville, Ohio. He passed away on August 26, 2023, at the age of 82.

Honors and awards

  • Honorary Doctorate in Business from Ohio Northern University, awarded in 1991
  • National Finalist for the Entrepreneur of the Year Award by Ernst & Young, 1999
  • Recipient of the Supporter of Entrepreneurship Award from Ernst & Young, South Central Ohio & Kentucky Region, 1999
  • Named Regional Leader of the Year by the Dayton Business Journal in 2008
  • Honored with the inaugural Torch Award from the Better Business Bureau, Dayton Chapter, in 2010