Mason Wells is a private equity investor in companies with revenues of $25 million to $300 million. Since 1982, the firm has invested in over 50 companies in three specific industry sectors: engineered products and services; outsourced business services; and specialty paper and packaging. Founded in 1982 as a subsidiary of Marshall & Ilsley Corporation, Mason Wells became an independent firm in 1998. The firm is currently investing through Mason Wells Buyout Fund III, a $525 million fund raised to make control-oriented buyout investments of middle market companies primarily located in the Midwestern United States. Mason Wells seeks profitable companies with minimum EBITDA of $5 million and has a geographic focus of the Midwestern United States.