Minstar Inc. stockholders have approved a plan...

Minstar Inc. stockholders have approved a plan under which an investor group led by company Chairman Irwin Jacobs will take the Minneapolis firm private for $420 million. Under terms of the deal, Jacobs and his partners will buy all of the firm’s outstanding common stock for $31.50 a share. A cash tender offer for about 85.7% of the stock was completed in July.