Kerry VerMeulen has a B.S. in Natural Resources & Environmental Sciences. Previous work experience includes remediation of hazardous waste sites and environmental reporting for Fluor Corporation, sales treating industrial and commercial heating and cooling systems for Nalco Chemical Company, and Phase I Environmental Assessments for Mostardi Platt in Chicago. In July of 2006, she began researching her idea for SunStick™.

Cynthia VanRenterghem has a B.S. in English and Political Science and a Master’s Degree in International Economics and American Foreign Policy. She worked in the field of international trade, forming her own consulting practice, CVR Consulting. Cynthia then worked on franchise-wide marketing and product sales for Greater Leap of Faith, LLC, which franchised its concept, Main Dish Kitchen.

In April of 2007, Kerry and Cynthia VanRenterghem partnered to launch Plumstone, L.L.C. They sold their first SunStick™ in April, 2008.