Ilion Capital Partners

Ilion Capital Partners

Ilion Capital Partners was founded in 2019 by Managing Partners William S. Green and Toru Yano. The firm operates from Hastings on Hudson, New York, and focuses exclusively on the lower middle market — specifically B2B industrial businesses with EBITDA between $5 million and $12 million and revenues from $20 million to $100 million. This segment is characterized by founder-owned companies that have reached a scale where professional management and capital are needed, yet remain below the radar of larger institutional funds. The firm executes a buyout strategy concentrated in industrial subsectors including motors, motion control, actuation, industrial services, and precision machining. Ilion does not chase platform roll-ups at scale but instead takes a partnership approach with management teams to improve operations, professionalize finance functions, and expand sales reach. The investment thesis is built around acquiring profitable businesses with durable demand, then augmenting them through an expert network that the principals cultivated over decades in industrial private equity. Geographic focus is North America, with sourcing oriented toward privately held, often overlooked manufacturing and service businesses. As of early 2025, details on total deployments, fund size, and team headcount remain undisclosed — consistent with the firm's posture of operating without a public marketing apparatus. The principals' professional histories include substantial industrial investment experience prior to founding Ilion. Their network- and thesis-driven sourcing model, absent a large origination team, depends on deep relationships with business owners, intermediaries, and industry operators. The firm has not announced a formal club-deal structure or philanthropic vehicle, and maintains a low public profile. Ilion's structural differentiation is its insistence on the micro-cap industrial buyout as a distinct craft, not a volume game. Where larger firms acquire industrial platforms and consolidate them for margin, Ilion enters as the first institutional owner, preserving legacy while implementing operational discipline. This stewardship framing — explicit in the firm's description of helping companies 'preserve their legacies' — contrasts with traditional private equity's focus on financial engineering and rapid exit timelines. It positions Ilion closer to the family-backed holding-company model than to institutional fundraising cycles.