Capstone Partners (IMAP USA) advised Harbor Foam on its sale to Alleguard, a portfolio company of Wynnchurch Capital.

Headquartered in Grandville, Michigan, Harbor Foam is a manufacturer of expanded polystyrene (“EPS”) and serves a diverse customer base across the construction, packaging, recreational vehicles, and general industrial end markets. EPS foam products, characterized by their closed-cell structure and ability to be molded into various shapes and sizes, provide excellent thermal insulation, impact resistance, and moisture resistance, making them ideal for a multitude of applications ranging from insulation in buildings to protective packaging for delicate goods. Harbor Foam primarily services markets located in the Midwest region within states such as Michigan, Indiana, Ohio, and Illinois. 

Alleguard is a manufacturer and distributor of custom EPS, EPP, and ARCEL foam products. It is a portfolio company of private equity firm Wynnchurch Capital and serves the packaging, appliance, building products, cold chain, automotive, consumer, and other general industrial end-markets