Hax

General contacts
Investor type

VC / CVC

Founded

2011

AUM

-

Location

San Francisco, California, United States

Investment Ticket

$0-1 m

Investment Stage

Pre-seed Seed

Region of investment

North America
Investor profile last updated: 16 August, 2026

Profile

HAX is a venture capital firm based in San Francisco, California, founded in 2011. It is part of SOSV, the world’s most active pre-seed deep-tech venture capital firm. Led by General Partners Duncan Turner and Avra van der Zee, HAX has a seasoned team of scientists and engineers who provide hands-on support to hard-tech founders. The firm is known for embedding an elite, global engineering organization directly into startups, offering industrial-grade space and technical mastery to transform complex research into market-ready products.

HAX invests in pre-seed and seed-stage startups that are solving hard problems with hard tech. Their sector focus includes energy, advanced compute, transportation, health tech, and manufacturing. The firm typically makes an initial investment of $550K and supports companies through seed and later stages. HAX operates from a 35,000 sq ft headquarters in Newark and a 10,000 sq ft facility in Princeton, providing a robust infrastructure for startups to prototype and de-risk technology.

Notable investments by HAX include Unspun - custom-built jeans, R-Zero - UV-C disinfection technologies, Neptune Robotics - underwater cleaning robots, Smartex - transparent supply chain solutions, and Particle - IoT platform. These companies exemplify HAX's commitment to backing founders tackling industrial-scale challenges with innovative technologies.

Industry

Industrial Robotics Transportation Infrastructure Energy HealthTech Deeptech ClimateTech

Contacts

Name
Title
Email
Social Networks
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Duncan Turner General Partner, SOSV & Managing Director, HAX
General Partner, SOSV & Managing Director, HAX
d•••@•••
LinkedIn
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Cyril Ebersweiler General Partner, SOSV & Managing Director, HAX
General Partner, SOSV & Managing Director, HAX
c•••@•••
LinkedIn
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FAQs about Hax

Hax is a venture capital firm that also operates as a corporate VC (CVC). It backs companies at Pre-seed and Seed, writing tickets of $0-1 m.
Hax is located in San Francisco, California, United States.
Hax was founded in 2011.
Hax invests in companies and startups in Industrial, Robotics, Transportation, Infrastructure, Energy, HealthTech, Deeptech, ClimateTech.
Hax invests in companies and startups in North America.
Hax invests in companies and startups at Pre-seed, Seed.
Hax usually invests $0-1 m on average.
Hax can be reached through its website hax.co, its LinkedIn page and its X account. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Hax — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.
Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Hax directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.
Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.