Adaptive Security Series B

Adaptive Security raised an $81M Series B in December 2025 from Andreessen Horowitz, the OpenAI Startup Fund, Bain Capital Ventures, Capital One Ventures, Citi Ventures, NVentures and Abstract.

Investors

• Abstract

  San Francisco venture capital firm with $3.3 billion in assets under management investing in seed and early-stage companies.

• Andreessen Horowitz

  Venture capital firm investing across technology sectors with a dedicated AI practice

• Bain Capital Ventures

  Venture firm investing across apps, infrastructure, commerce, fintech, healthcare, physical AI and security

• FCapital One Ventures
• FCiti Ventures
• NVentures

  NVIDIA venture capital arm, investing in technology visionaries across robotics and edge AI, AI factories and infrastructure, and scientific computing, with portfolio companies including Skild AI, Emerald AI and Contextual AI.

• FOpenAI Startup Fund

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