Josh Koplewicz is the Managing Partner of Thayer Street Partners, a boutique private equity firm he founded in 2012 that provides flexible growth capital to lower middle market companies in financial and business services.

Our conversation traces Josh’s journey from his early fascination with business and real estate to building Thayer Street into an institutional platform. We discuss the lessons he learned at Goldman Sachs and his transition from scrappy dealmaker to fund manager. We cover Thayer Street’s thematic sourcing, deal structuring, and portfolio construction, the evolving landscape for non-bank growth capital, challenges of scaling a boutique firm, and Josh’s vision for Thayer Street’s future.