33N Ventures
Portuguese venture capital firm; led Exein's €15M Series B (July 2024) and participated in its €70M Series C (July 2025).
Porto-based European venture capital firm investing in category-leading companies across cybersecurity, AI, and defense, framed as 'backed from Europe, built for the world.' Its stated focus is 'securing and powering the AI era,' drawing on partners' decade-plus track record across cyber-market cycles, typically writing €4-12M checks into Series A/B rounds with existing revenue and international scaling ambition. Managing Partners Carlos Alberto Silva and Carlos Moreira da Silva lead the firm alongside Principals Margarida Correia, Gonçalo Borges, and Pedro Carreira, and Venture Partners Christophe Bianco and Guy Horowitz.
Overview
- Firm
- 33N Ventures
- Headquarters
- Porto, Portugal
- Founded
- 2022
- AUM
- Stages
- Thesis
- Category-leading companies across cybersecurity, AI, and defense — 'securing and powering the AI era' — typically writing €4-12M checks into Series A/B rounds with existing revenue and international scaling ambition.
Portfolio companies1
Partners0
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Sources & citations2
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- 1
33N Ventures led Exein's €15M Series B (July 2024), joined by Partech, United Ventures, eCAPITAL, and Future Industry Ventures.
Exein: Exein Raises €15M in Series B Funding as It Sets Global Standard for Embedded CybersecurityVerified2024-07-12 - 2
33N Ventures followed on (did not lead) in Exein's €70M Series C, led by Balderton with new investors Supernova and Lakestar (July 2025).
Partech: Exein raises €70M in Series C funding to secure billions of IoT devices worldwideVerified2025-07-16