ISG is pleased to announce the recent transition of firm ownership to a 100% employee stock ownership plan (ESOP) as of January 6, 2017. The multi-disciplinary firm that started 40+ years ago in Mankato, Minnesota, has since grown to be a Top 500 Design Firm as recognized by Engineering News-Record (ENR), Zweig Group Hot Firm, and PSMJ Circle of Excellence recipient, illustrating the progressive increase in talent, expertise, and market share.
“This is a monumental time for the firm and holds a special place in my personal thoughts having watched the firm grow from being in the basement of my father’s, the late Ken Surprenant, house, to a 230+ person firm with eight offices in three states and clients nationwide,” states Chad Surprenant, ISG President and CEO. “While this formal transition is new, our actions that allowed us to get here were not by chance. We have been intentional about our decisions and progression, making strategic moves that have constantly kept our clients and employees at the forefront of every decision.”
With a recent acquisition this past September 2016 in Green Bay, Wisconsin, which was one of three over the past decade, growth and positive performance have allowed ISG to expand its service offerings and opportunities for professionals at every level.
“We anticipate that broader employee ownership and opportunity to feel directly connected to performance will be a strategic tool in amplifying our culture of accountability and opportunism, opening the doors to limitless potential for the firm, employees, and clients,” notes Lynn Bruns, ISG Executive Vice President.
ISG formally announced the transition at a recent firm gathering in an ISG-designed space, the Verizon Wireless Center – Performing Arts Center, in its hometown of Mankato, Minnesota on January 7, 2017. Over 300 employees and their guests attended representing Iowa, Minnesota, and Wisconsin, formally kicking off the new ESOP structure.
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The Spring 2026 Educational Facilities Design Awards, presented by Learning By Design, honors education projects that demonstrate design excellence, innovation, and meaningful impact on student experience, with recipients selected through a blind peer review process from 52 submissions.

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ISG’s Martin County Ditch No. 28 Nutrient Treatment Train project has received two honors: the 2026 ACEC Minnesota Engineering Excellence Grand Award and the ACEC National Engineering Excellence Award, recognizing innovative engineering solutions that improve drainage performance while protecting water quality.