

airfield-Maxwell is a third-generation single family office headquartered in New York City, founded in 1957 by Keiichi Sugahara and now led by the Sugahara family's second and third generations. The firm operates as a diversified family enterprise that buys, builds, and holds companies across a range of industries — historically anchored in maritime shipping and seismic/oil and gas technology, and now spanning franchised business services, construction, and building materials. Its investment philosophy centers on permanent capital and a long-term ownership mindset, partnering with family-owned businesses, entrepreneurs, and management teams while taking a hands-off approach to day-to-day ope...
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