Weidman began his career in the chemical industry with
American Cyanamid in 1980. He rose to the position of vice president at GM Cyanamid Canada (1989-1990) and in the GM Fibers Division (1990-1994). Weidman joined
AlliedSignal in 1994, holding various positions, including president and general manager of fluorine products (1995-199) and president of its performance polymers business (1998-1999). When Allied Signal was acquired by
Honeywell, Weidman became Honeywell President of Performance Polymers Business (1999-2000). Weidman is a member of the board of the National Advisory Council of the
Marriott School of Business at BYU. He is a member of the Advancement Counsel for Engineering and Technology for the
Ira A. Fulton College of Engineering and Technology at BYU. Weidman is a member of the board of
The Conservation Fund. He is a board member of The Vanishing Cultures Project. ==Philanthropy==