Before Retirement, Denny Weinberg spent more than four decades in executive leadership, board director, advisory, and consulting roles for multiple public and private companies in employer benefits, consumer health financing, and business operations. During this time, Denny Weinberg specialized in matters of new business creation, as well as business turnarounds and restructuring initiatives. He also served as a board member for companies in many different industries, from media to food production.

From 2009 to 2023, Denny Weinberg managed operations, financing, and sales at large residential community development projects throughout northwestern Montana as a managing member with KNIC, LLC. Since retiring, he has continued to oversee real estate development interests at the Kalispell-based company.

Denny Weinberg holds an engineering degree from the University of Missouri in Columbia. He has extensive experience in the commercial equipment manufacturing and food processing industry, and holds several electronic control system patents. Since retiring, he has focused on playing the piano. In addition to his interests in classical symphonies and classic rock, he plays keyboards and provides harmonies for local church worship teams.