William B. Rosenzweig Biography William B. Rosenzweig is co-founder and managing director of Great Spirit Ventures, the venture capital division of the A.M. Todd Group, a 135 year-old firm specializing in food flavors, ingredients, and specialty agriculture. Great Spirit Ventures invests early stage capital and develops new ventures at the intersection of food, agriculture and medicine. Mr. Rosenzweig is an entrepreneur, investor and brand builder, having led a number of values-driven consumer products companies. He has been co-founder and CEO of The Republic of Tea, an award-winning specialty tea company; Sr. Vice President of Odwalla, the nation’s largest fresh juice company; Vice President of Nakamichi; Partner and CEO of Hambrecht Vineyards and Wineries, and Chairman of Winetasting.com. As an investor and board member he co-founded Venture Strategy Group and has played a role in the growth of Stonyfield Farms, Leapfrog, Putumayo and Trinity Springs. He recently co-founded Kingdom of Herbs, a purveyor of all organic plants and products for home and garden at the Ferry Building in San Francisco. Mr. Rosenzweig is on the faculty at the Center for Responsible Business at the Haas School of Business at UC Berkeley where he teaches the MBA course in Social Entrepreneurship and serves as faculty advisor to the Global Social Venture Competition. He is also founder of Ideagarden, a new business developer specializing in strategy, leadership development and financing for mission-driven business ventures focused on generating social and environmental value.