John Tomshack

John Tomshack is a marine logistics manager at Holcim US, bringing over 20 years of experience in customer support, financial, and operational management within dynamic manufacturing and distribution environments. They previously served as a marine logistics manager and customer value center manager at LafargeHolcim, where they significantly improved cash flow and customer service quality. Earlier in their career, at McMaster-Carr, they held various roles and consistently surpassed expectations and KPIs over a 15-year span. John holds a Bachelor’s degree in Business Administration from St. Norbert College and an MBA from the University of Notre Dame's Mendoza College of Business.