After 30 years in business, King of Prussia-based firm Powell Trachtman is winding down, as one group of attorneys, including the firm’s last remaining founding shareholder, prepares to join Wisler Pearlstine, and another group strikes out on its own with a new firm.

Powell Trachtman co-founder Michael Trachtman, along with fellow shareholders David Burkholder and Mary Pedersen, announced this week that they’re joining Wisler Pearlstine in Blue Bell to form a new venture called the Wisler Business and Entrepreneurship Center, which will focus on providing legal services to midmarket and small companies.