Mark A. Corsello, founder of MAC Sales, LLC, has been in the automotive industry for over twenty years. He graduated in 1988 from New Jersey Institute of Technology with a B.S in Chemical Engineering, and spent the first nine years of his career as a Product Engineer and Engineering Manager with Wagner Lighting, KB Lighting, Johnson Controls, and Carlisle Engineered Products. In 1997, he changed his focus to sales, and became an independent sub-representative of a Detroit-based Manufacturers' Rep Agency. After a very successful tenure of over ten years as a sales rep, Mark formed MAC Sales, LLC in 2007.

Mark lives with his wife and their three children in Troy, MI.