Cantos Ventures Fund III

Cantos Ventures

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Status

ACTIVE

Global HQ

San Francisco, United States

Countries of investment

United States
Canada
United Kingdom
Israel

Investment stages

Pre-Seed
Seed
Series A

Industries

DeepTech
ClimateTech
Biotech
Robotics
Aerospace
Computational Technology
Advanced Materials
Energy
Space

About
Cantos Ventures is a San Francisco-based venture capital firm focused on backing pre-seed frontier technology founders. Their focus spans deep tech, climate tech, biotech, robotics, aerospace, and computational technology across the United States, Canada, United Kingdom, and Israel. The firm supports frontier tech founders from pre-seed through Series A stages.

Min check size: $250K
Max check size: $1.5M
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Investment Thesis

Cantos Ventures is a pre-seed to Series A stage venture capital firm deploying capital across deep tech, climate tech, biotech, robotics, aerospace, and computational sectors. They invest as high-conviction pre-seed lead investors in frontier technology founders building world-changing companies. The firm differentiates itself through founder Ian Rountree's operator experience and $50M+ AUM focused on backing scientifically ambitious founders at the earliest stages.

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Manager's Experience

Founded in 2018 by Ian Rountree (Founder and General Partner), former operator with technical and commercial background who established Cantos as one of the leading pre-seed frontier tech investors. Team includes additional principals and operators focused on scientific and engineering founder support. Manages Fund I and Fund II totaling over $50M AUM. Portfolio includes Hermeus (hypersonic aircraft), Radiant Nuclear (nuclear microreactors), Astranis (satellite communications), Turing Video, Kepler Communications, Ohalo Genetics, and various climate tech and deep tech companies. Focused on pre-seed leadership positions in frontier technology companies, with hands-on technical and go-to-market support for scientifically ambitious founders working on world-changing problems at the earliest stages.