Climate & EnergyLogistics & Supply ChainDefense & SpaceEducationManufacturingRobotics & AutomationAI
Cubit Capital is an early-stage venture firm and the venture arm of the Dallas-based Rees-Jones family office. It partners with founders confronting foundational problems across Enduring Infrastructure (energy resilience, critical materials & supply chain, aerospace & defense) and Platforms for Human Flourishing (education & workforce development, physical & spiritual restoration).
Deal activity increased 167% year-over-year (8 deals in the last 12 months). Their most common stage is seed (44% of deals). Average disclosed round size is $30.0M (across 30 rounds with reported amounts).
Portfolio
27
Fund Size
—
Top Stage
Seed
Last 12 Mo
8
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
32 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Hadrian | Series B | $117M | Aug 2026 |
 Fluxco | Seed | $26M | Jul 2026 |
 Lucid Bots | Series B | $20M | Mar 2026 |
 Lux Aeterna | Seed | $10M | Mar 2026 |
 Tap | Unknown | — | Feb 2026 |
| SSage Geosystems | Series B | $97M | Jan 2026 |
| Fluxco | Seed | $26M | Jan 2026 |
 Vulcan Technologies, Inc | Seed | $10.9M | Oct 2025 |
 Vulcan Technologies | Seed | $10.9M | Oct 2025 |
 Element3 | Series A | — | Sep 2025 |
 Reframe Financial | Series A | $20M | Aug 2025 |
 Chariot Defense | Seed | $8M | Jul 2025 |
| Reframe Financial | Seed | $5.8M | Jan 2025 |
 Vatn Systems | Seed | $13M | Nov 2024 |
 H3X Technologies | Series A | $20M | Aug 2024 |
 Odyssey | Series A | $10M | May 2024 |
 Overland AI | Seed | $10M | May 2024 |
| Lucid Bots | Series A | $9.1M | May 2024 |
 UpSmith | Pre-Seed | $5M | Jan 2024 |
 Seurat | Series C | $99M | Oct 2023 |
 Seurat Technologies | Series B | $99M | Oct 2023 |
 Saronic Technologies | Series C | $55M | Oct 2023 |
 ILLA | Seed | $2M | Oct 2021 |
| Seurat | Series A | $79M | Jan 2018 |
 Albedo | Series A | $35M | — |
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Top Co-Investors
Y Combinator9 shared
8VC4 shared
Lockheed Martin Ventures4 shared
Decisive Point4 shared
Silent Ventures3 shared
DENSO3 shared
GM Ventures3 shared
SIP Global Partners3 shared
True Ventures3 shared
Porsche Automobil Holding SE3 shared
In-Q-Tel3 shared
General Catalyst3 shared
Liquid 2 Ventures3 shared
Nor'easter Ventures3 shared
Saga Ventures3 shared
Caffeinated Capital2 shared
Point72 Private Investments2 shared
Capricorn Investment Group2 shared
NVentures2 shared
Andreessen Horowitz2 shared
Last updated: 7 October 2026