Mac has worked with small businesses and non-profits focused on sustainability and social responsibility for over 30 years. He provides general consulting support for early stage businesses and has served as fractional CFO for many of them.
He has served as interim CEO for well-known socially responsible businesses including Northeast Cooperatives (the original regional natural products wholesale grocer), clothing manufacturer Eileen Fisher, and the Greyston Bakery in Yonkers, renowned nationally as a model for hiring and employment in disenfranchised communities.
Mac was also the co-founder (with Gary Hirshberg of Stonyfield Farm) and CEO of O’Naturals, the first organic and natural quick service restaurant chain in the country. He's held roles at L. L. Bean and the Museum of Modern Art in New York, holds an MBA from Harvard University, and lives in Maine with his wife, where they delight in their four daughters and nine grandchildren.