Jun 12, 2025 · 55m · capital-allocators
Josh Koplewicz – Flexible Capital and Creative Structures at Thayer Street (EP.451)
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In this episode of Capital Allocators, host Ted Seides interviews Josh Koplewicz, founder and managing partner of Thayer Street Partners, exploring his journey from Goldman Sachs to building a boutique private equity firm that provides flexible, downside-protected growth capital to lower middle-market companies.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. Ted holds 11.5% of the talking time here. How this is scored →
speaking balance: gold is Ted, purple is the guest (3 minute bins)
Josh challenges the prevailing narrative that the $5T private credit boom serves the entire non-bank lending market, emphasizing that 80% is controlled by mega-funds ignoring small checks.
Hardest push from Ted ▶ 31:59 Pushing on downside protection without cash yieldTed presses Josh on how he ensures true downside protection when structuring positions that forgo regular cash coupon payments.
Biggest teaching moment ▶ 24:05 Explaining the lower middle-market debt voidJosh educates the host on how regional bank retrenchment coupled with direct lending fund consolidation creates a distinct financing vacuum between $5M and $50M.
Ted holds their own ▶ 46:46 Formulating the strategy pre-mortem questionTed demonstrates keen allocator acumen by framing a classic pre-mortem question around macro and correlated risks in structured growth equity.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | Ted as informed peer | Guest teaching | Guest disagreement | Ted pushing back | Why |
|---|---|---|---|---|---|---|
| Event Announcement: Capital Allocators University | 0 | 0 | 0 | 0 | Ted opens with event announcements and house business before prompting Josh to discuss his early background and interest in finance. | |
| Early Career at Goldman Sachs and Trial by Fire | 3 | 3 | 0 | 0 | Ted asks how Josh connected real estate and finance at Goldman Sachs. Josh shares anecdotes of trial-by-fire deals in the Special Situations Group. | |
| Risk Management and Lessons from the Global Financial Crisis | 4 | 4 | 0 | 0 | Ted asks about lessons learned during the Global Financial Crisis. Josh explains the downside-first mentality and the risks of relying on cheap bank leverage. | |
| Founding Thayer Street: Transitioning from Goldman to Entrepreneurship | 4 | 3 | 0 | 0 | Ted notes the long line of Goldman alumni founding funds and asks about Josh's journey. Josh details his scrappy startup approach and operating out of a Staples print center. | |
| Scrappy Deal-by-Deal Sourcing and Relationship Building | 3 | 4 | 0 | 0 | Ted inquires about the early deal-by-deal phase and sourcing. Josh outlines his bespoke solutions-oriented structuring and family office syndicate backing. | |
| Team Building and Transitioning to Institutional Funds | 3 | 3 | 0 | 0 | Ted asks about assembling the team and transitioning from SPVs to an institutional commingled fund, which Josh explains closed in 2019. | |
| Core Investment Strategy: Flexible Capital in the Lower Middle Market | 4 | 4 | 0 | 0 | Ted asks Josh to describe Thayer Street's core strategy. Josh explains their preferred equity focus on non-correlated recurring revenue businesses. | |
| Market Landscape: The Void in Lower Middle-Market Credit | 4 | 5 | 1 | 0 | Josh breaks down the macro setup, pointing out that private credit mega-funds ignore the $5M-$50M check size, leaving a void for flexible capital providers. | |
| Proactive Diligence Process and Relationship Cultivation | 3 | 4 | 0 | 0 | Ted asks about diligence steps once an opportunity is found. Josh explains that 80% of diligence occurs beforehand via multi-year sector tracking. | |
| Deal Structuring and Downside Protection Framework | 5 | 4 | 0 | 0 | Ted probes on structuring downside protection without requiring regular cash coupons. Josh explains accrued minimum returns and board governance rights. | |
| Case Study: Structuring a Real Estate Payments Investment | 4 | 4 | 0 | 0 | Josh walks through a case study in property management payments where structured equity offered non-dilutive capital and downside protection. | |
| Case Study: Supporting Non-Dilutive M&A and Growth | 3 | 4 | 0 | 0 | Josh shares a second case study of backing an entrepreneur who avoided senior leverage to execute programmatic add-on acquisitions. | |
| Addressing Scaling Challenges and Underperformance | 4 | 4 | 0 | 0 | Ted asks what occurs when investments encounter friction. Josh details operational bottlenecks during growth and navigating early strategic sales. | |
| Operational Value Creation and Operating Partner Model | 4 | 4 | 0 | 0 | Ted asks how Thayer Street actively assists management teams. Josh outlines the operating partner model and functional support across HR and M&A integration. | |
| Competitive Positioning and Value Proposition | 5 | 4 | 0 | 0 | Ted questions Josh on portfolio construction and potential correlated risks. Josh breaks down target attachment points and liquidity sensitivity. | |
| Future Vision and Scaling a Boutique Private Equity Firm | 4 | 3 | 0 | 0 | Ted inquires about firm scaling challenges over the next six years. Josh discusses retention, synthetic carry, and closing reflective questions. |