William Blair acted as the exclusive financial advisor to The Old Dominion Group (ODG) in connection with its sale to Installed Building Products, Inc. (NYSE: IBP). The transaction signed and closed on November 12, 2026.
About the Companies
Founded in 1981, ODG is a leading provider of integrated specialty services, including mechanical and industrial insulation, firestopping, electric heat trace, and other complementary services. The company serves customers across commercial and industrial end markets, including healthcare, commercial, data center, education, and manufacturing. ODG combines highly specialized technical expertise with national execution capabilities to support long-standing customers’ most complex needs.
Installed Building Products, Inc. is one of the nation's largest new residential insulation installers and is a diversified installer of complementary building products, including waterproofing, fire-stopping, fireproofing, garage doors, rain gutters, window blinds, shower doors, closet shelving and mirrors and other products for residential and commercial builders located in the continental United States. The company manages all aspects of the installation process for its customers, from direct purchase and receipt of materials from national manufacturers to its timely supply of materials to job sites and quality installation. The company offers its portfolio of services for new and existing single-family and multi-family residential and commercial building projects in all 48 continental states and the District of Columbia from its national network of over 250 branch locations.
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Note: The $698 million amount represents the $725 million aggregate purchase price under the Merger Agreement less transaction bonuses payable at closing.