HAX (formerly HAXLR8R) is a pre-seed startup development program operated by SOSV, specializing in hard tech startups working on sustainability across climate, industrial automation, and human health. It is headquartered in Newark, New Jersey and provides hands-on venture capital for hard tech founders at company inception.
Average disclosed round size is $5.5M (across 15 rounds with reported amounts).
Portfolio
18
Fund Size
—
Top Stage
Seed
Last 12 Mo
0
Team
Cyril Ebersweiler
General Partner, SOSV & Managing Director, HAX
Duncan Turner
General Partner, SOSV & Managing Director, HAX
Andrew Gollach
Partner
Susan Schofer
Partner & Chief Science Officer, HAX
Michael Moon
Director of Electronic Engineering, HAX
Vitaly Vyazovsky
Creative Director, HAX
Woojung Lee
Investment Analyst
Brit Harley
Office Manager
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
Portfolio
| Company | Round | Amount | Date |
|---|---|---|---|
| QQnetic | Unknown | $2M | Jan 2025 |
 LexxPluss Inc. | Series A | — | Mar 2023 |
| SSwap Robotics | Unknown | $7M | Feb 2023 |
 Smartex | Series A | $24.7M | Nov 2022 |
 Livin Farms | Series A | — | Sep 2022 |
| BBisu | Seed | $3.2M | Oct 2021 |
 Flow Neuroscience | Series A | — | Aug 2021 |
 Allozymes | Seed | $5M | Jul 2021 |
| RRockMass Technologies Inc | Seed | $2.5M | Jan 2020 |
| WWasteless | Series A | $2M | Oct 2018 |
| WWasteless | Seed | $400K | Jan 2017 |
| EEverpurse | Unknown | $1M | Jan 2014 |
 Presso | Series A | $10M | — |
| Presso | Seed | $8M | — |
| NNEURODE | Pre-Seed | — | — |
| BBackbar Solutions | Seed | $3.5M | — |
| PPrinceton Critical Minerals | Series A | $11M | — |
| TTumi Robotics | Unknown | $250K | — |
| AACiiST Smart Networks Ltd. | Seed | $1.5M | — |
| SSkygauge Robotics | Seed | — | — |
| SSkygauge Robotics | Pre-Seed | — | — |
Top Co-Investors
Last updated: 8 September 2026