Thayer Street Partners

Thayer Street Partners is a boutique private investment firm based in New York City, specializing in providing flexible capital solutions to high-growth, recurring revenue businesses within the lower middle market. The firm focuses on essential sectors including Financial Services, Business Services, and Real Estate Services. They partner with entrepreneurial management teams seeking long-term, aligned capital to accelerate growth through structured equity and tailored capital solutions, often being the first institutional capital in a business.

Founded in 2011 by Managing Partner Josh Koplewicz, Thayer Street Partners initially made investments through special purpose vehicles (SPVs) before raising commingled funds. The firm's approach emphasizes creating customized structures that may include preferred equity and debt with warrants, aiming for a debt-like risk profile while preserving equity upside. This strategy is designed to provide downside protection and upside potential, often with limited or no third-party leverage.

Thayer Street Partners has a track record of over 30 investments since its inception. Notable portfolio companies and investments include Kings III of America, a provider of elevator and pool emergency monitoring solutions, which Thayer Street supported in scaling and expanding into new markets before its acquisition in 2022. Other investments include ClickPay, ShopKeep, Goji, Union Bay Risk Advisors, Roomrs, East Valley RV & Boat Storage, and Grove Point Marinas.

The firm's team, led by Josh Koplewicz, brings extensive operating and investment experience from leading private equity, opportunistic credit, and real asset investing firms. They employ a hands-on, collaborative approach, offering operational and strategic support to help founder-led businesses scale, institutionalize finance and data teams, and accelerate M&A and asset origination in fragmented verticals.