William Grant & Sons named Michael Leestma as General Manager, Commercial Markets, U.S. In his new role, Leestma will oversee all commercial elements at William Grant & Sons USA, including regional sales, national accounts, commercial planning, route-to-consumer, e-commerce and net revenue management. William Grant & Sons said his role will encompass his background in sales, commercial strategy, distributor management and national account leadership. He joins the company from Diageo, where he spent 13 years, most recently as Vice President, National Sales, for the Diageo Beer Company. Prior to that, he led several financial and strategic initiatives within Diageo Spirits.