MINNEAPOLIS, MN — Northstar Capital (“Northstar”), a committed financing partner to private equity sponsors in the lower middle market, is pleased to announce its investment in Great River Group, LLC (“GRG”), a portfolio company of The Great River Company.

GRG is a diversified platform of companies that provides engineering, testing, and consulting services supporting construction and infrastructure projects across the United States. The platform offers a comprehensive suite of services including engineering design, materials testing, geotechnical engineering, environmental consulting, drilling, and leak detection. GRG serves a broad base of developers, contractors, and government agencies across infrastructure, commercial, and energy end markets. For more information, please visit greatrivergroup.com.

Northstar provided debt and an equity co-investment to support the financing of an add-on acquisition to further grow the GRG platform. The Northstar team is dedicated to partnering with experienced management teams and private equity sponsors to help good companies become even better. GRG represents the nineteenth platform investment in Northstar Mezzanine Partners VIII L.P.

About Northstar Capital

Northstar Capital is a private investment firm specializing in providing flexible credit solutions and equity co-investments for lower middle market companies. Since its founding in 1993, Northstar has raised more than $2.4 billion in capital and supported over 170 small businesses nationwide. The firm is headquartered in Minneapolis, Minnesota, with an additional office in Fargo, North Dakota. Northstar invests across a broad range of industries, including healthcare, industrials, consumer, business services, food and agriculture, outsourcing, and distribution. For more information, please visit northstarcapital.com.

About The Great River Company

The Great River Company is a Minneapolis-based private investment firm that partners with founder and family-owned businesses to provide flexible capital solutions, ownership transitions, and long-term growth support. Founded in 2020, the firm focuses on investing in lower middle market companies, particularly location-based service businesses across sectors such as infrastructure, facility services, and business services, with an emphasis on long-term value creation and operational partnership. For additional information, please visit tgrco.net.

Contacts

Chris Kocourek – Managing Partner, Joe Lingen – Vice President & Colin Moroney – Senior Associate