Key Polymer Holdings

Key Polymer Holdings

Key Polymer Holdings was founded as the single-family office managing the wealth created by the Kim family through Key Polymer Corporation, a Massachusetts-based specialty polymer and materials manufacturer established in the 1970s. The office is headquartered in Lawrence, MA, within the Merrimack Valley region. The family office invests across several asset classes, including private equity, real estate, infrastructure, and energy transition & renewables. It has a known focus on direct investments and co-investments alongside institutional partners, with a geographic emphasis on North America. Public records show investments in industrial and energy infrastructure projects, as well as commercial real estate holdings in the Northeast. The firm operates with a lean team structure, typical of single-family offices managing modest AUMs. No additional offices or affiliated vehicles (e.g., foundations, operating companies) beyond Key Polymer Corporation have been identified. The office remains focused on preserving and growing intergenerational wealth through long-term, capital-preservation-oriented strategies. What differentiates Key Polymer Holdings structurally is its close operational tie to a single-owner manufacturing business — a model where investment strategy is directly informed by decades of industrial operating experience. The family's wealth remains concentrated in the manufacturing sector, and the family office plays a role in managing both liquidity and the active business.