Michael W. Sonnenfeldt is an American entrepreneur, philanthropist, and political activist. Currently, he is the founder, owner, and Chairman of TIGER 21, Chairman of Magnolia Purchasing Advisors, the Chairman of publicly traded Canadian solar company, Carmanah Technologies, Ltd, and a Board Member of Earthjustice. Sonnenfeldt is the President of the Goldman-Sonnenfeldt Foundation and on the Boards of several other philanthropic and political organizations.
- Founder & Chairman
- Company: Tiger21