● Fund III · Open · EU + US
B3 Capital partners with exceptional founders at the intersection of artificial intelligence, infrastructure, and longevity — where strong intellectual property creates durable competitive advantage.
§ 01 — Thesis
B3 Capital partners with exceptional founders building at the intersection of artificial intelligence, infrastructure, and longevity — companies where strong intellectual property creates durable competitive advantage.
We invest from Seed through Series B across Europe and the United States, bridging two of the world's deepest talent pools with the capital, networks, and operational insight to scale globally.
§ 02 — What we back
We back founders solving hard problems with defensible technology. Our portfolio companies share a common thread: proprietary IP at the core — whether that's novel algorithms, deep hardware-software integration, or breakthrough science translated into products.
— 01
Artificial Intelligence
Novel models, agents, applied AI.
— 02
Infrastructure
Compute, data, developer platforms.
— 03
Longevity
Healthspan, diagnostics, bio-tech.
— 04
Deep IP · HW/SW
Hardware-software integration, science.
§ 03 — Why B3
We operate natively across both the European and American ecosystems — sourcing breakthrough research and technical talent in Europe, and connecting founders to the go-to-market infrastructure, enterprise customers, and follow-on capital networks of Silicon Valley and the broader US market.
For founders building globally from day one, we're the partner who's already there.
Europe
R&D · Talent · Research
United States
GTM · Enterprise · Follow-on