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Duane Doyle Sr., owner and Chief Executive Officer of the Peterson family of companies (Peterson Cat, Peterson Power Systems, Cresco—The Cat Rental Store, Peterson—The Cat Rental Store, SITECH, Peterson Trucks, and Peterson University) is a third-generation member of the Peterson team.

During his high school and college years, Duane Sr. began working at Peterson during summers and holidays, before he eventually purchased the company from his father in 1995. Under Duane Sr.’s leadership, Peterson Cat has expanded its territory from northern California into Oregon and Washington and has risen to the pinnacle of Caterpillar’s dealer network in excellence, recognition, and influence.

Duane Sr. graduated from UC Berkeley with a bachelor's degree in business administration and accounting.