One Rock Capital Partners

Investment decisions sit with co-founders Tony W. Lee and R. Scott Spielvogel, who serve as managing partners and formed the firm after careers at Ripplewood Holdings. The investment committee also includes senior operating partners who are full-time members of the firm, not outside advisors. This structure means operational feasibility assessments are wired directly into every investment approval.

One Rock pursues complex corporate carve-outs, distressed industrial assets, and non-core divisions being shed by larger corporations. The firm looks for businesses where operating dysfunction—supply-chain breakdowns, underinvested plant floors, management gaps—has depressed performance in ways that financial engineering alone cannot fix. Typical targets are in specialty chemicals, manufacturing, energy services, and food processing.

One Rock maintains a permanent bench of operating partners—former plant managers, supply-chain executives, and industrial engineers—on payroll rather than retaining them as deal-by-deal consultants. These operators participate in due diligence, sit on the investment committee, and after acquisition move into portfolio companies to lead turnarounds, restructure procurement, and install new management. The fixed cost of carrying operators internally forces the firm to only pursue deals that genuinely require operational overhaul.

One Rock invests primarily in North America but also evaluates opportunities in Europe, particularly in the industrial and chemical sectors. The firm's European activity has included acquiring businesses from global corporations where the parent is divesting a U.S. or North American division, as in the Constantia Flexibles carve-out.

Generalist middle-market firms typically outsource operational diligence and turnaround work to third-party consultants or interim executives. One Rock embeds operators directly into the partnership and investment committee. That architecture creates a structural bias toward deals requiring intensive operational intervention—complex carve-outs, underperforming plants, distressed manufacturers—rather than financial restructurings or sector-agnostic platform roll-ups.

One Rock's fund structure involves raising commingled capital from institutional limited partners for each vintage. The firm has historically offered co-investment rights to its LP base on a deal-by-deal basis, consistent with middle-market private equity practice. Specific co-investment policies are determined per fund and disclosed to limited partners in fund documents.

One Rock targets buyout and special-situation control investments in the lower middle market and mid-market, typically deploying $50 million to $300 million in equity per transaction. The firm does not pursue venture capital, minority growth equity, or passive public market positions. Its mandate requires control to implement the operational changes that define its strategy.