Burned Bridges, No Retreats - Shaun Abrahamson - Third Sphere - Episode #91

17 Mar 2026 · 54 min
Episode

17 Mar 2026 · 54 min

0:00

In this episode of the Not Another CEO podcast, host David Politis interviews Shaun (Sean) Abrahamson, co‑founder and managing partner of Third Sphere, a venture fund focused on deep‑tech, climate tech, hardware, and urban infrastructure. Abrahamson explains the fund’s “burned bridges” thesis – seeking founders with little optionality who are forced to build – and how this informs their ultra‑early investment approach. He describes the signals they rely on, such as asynchronous work products, techno‑economic models, and even bad logos, to assess founders before a formal conversation. The discussion covers the unique challenges of hardware and climate‑tech investing, including weak customer signals, supply‑chain constraints, margin‑for‑error considerations, and the impact of tariffs and geopolitics. Abrahamson also talks about the evolving capital landscape, contrasting traditional VC with private credit and non‑dilutive financing, and how Third Sphere adds value through direct feedback, structured updates, and a proprietary monitoring tool. He reflects on portfolio dynamics, the harsh reality that only a few bets win, and shares a missed opportunity (Glovo). Finally, he looks ahead, expressing excitement about robotics, asset‑finance for physical‑world startups, and the growing intersection of climate tech with resilience and public‑safety sectors.

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