# Lightspeed Venture Partners **Lightspeed Venture Partners** is a Menlo Park–based multi-stage venture firm founded in 2000, with a portfolio spanning enterprise software, consumer, fintech, AI and — increasingly — defense technology. It registered as an investment adviser in 2025, joining the handful of large venture firms restructuring to hold public equities and larger secondary positions. ⚠️ **Stub.** Partner roster, fund sizes, and the firm's political-giving profile are not yet researched. ## In the KB - [[Castelion $1B Series C]] — existing investor participating in the August 2026 round. ## See Also - [[Andreessen Horowitz]] - [[General Catalyst]] - [[Defense Tech Ecosystem]]