STO Building Group parent appoints new president

Global Infrastructure Solutions, the parent company of STO Building Group, has appointed investment banking veteran Scott Kolbrenner as president and chief strategy officer, according to a Sept. 2 news release.

In the role, Kolbrenner will partner with the leadership of STO and its sister company, GISI Consulting Group, to build upon the firms’ history of organic and acquisitive growth, according to the news release. He will also develop and implement a capital strategy for GISI.

“This company stands apart as something truly special — a dynamic and employee-centric ownership model that is uniquely positioned in the industry to grow, partner with other leading firms in the sector, and evolve on a global scale,” Kolbrenner said in the news release.

Prior to joining GISI, Kolbrenner spent nearly 27 years at investment bank Houlihan Lokey, where he led the company’s infrastructure services practice. 

The move comes as STO Building Group, which was ranked the No. 6 contractor in the country by revenue, according to Engineering News-Record’s 2025 Top 400 Commercial Contractors list, made several of its own executive moves over the past two years. 

In Dec. 2023, the firm appointed four people to executive roles, three of which were freshly created. Among them were Greg Dunkle, who was tapped to be the firm’s new chief operating officer. One month later, in Jan. 2024, STO picked Michael Trovini as the first president of the organization and tapped Scott Allan as its inaugural chief risk officer.