MacLean-Fogg

Industrial Machinery ManufacturingIllinois, United States1001-5000 Employees

MacLean-Fogg is a fourth-generation, family-owned American manufacturer based in Mundelein, Illinois, founded in 1925. It designs and produces American-made engineered metal and plastic components and systems for automotive, industrial equipment, material handling, renewable energy, construction, heavy equipment, and infrastructure markets. The company emphasizes turning customer requirements into manufacturable solutions through practical engineering, disciplined operations, and reliable delivery, supported by a sizeable U.S.-based manufacturing footprint.

It operates through a portfolio of specialized businesses, including MacLean-Fogg Component Solutions, Threadstrong, OMCO (Roll Forming Plus, OMCO Solar, and OMCO Fabrication), and Mallard Manufacturing. Recent developments include the acquisitions of Mallard Manufacturing in 2024 and OMCO Solar and OMCOform in 2026, signaling growth into high-value industrial markets. Leadership is headed by President and CEO Duncan MacLean, with Barry MacLean serving as Chairman.

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