Spiral Hydrogen
PrivateLast Round
Pre Seed
Apr 30, 2026
Total Funding Raised
$3.16M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Spiral Hydrogen is a deep-tech company that is developing a rotating, bubble-free electrolyser aimed at improving green hydrogen production efficiency.
Sector
Energy & Sustainability
Verticals
Alternative Fuels, Renewable Energy, Clean Manufacturing, Clean Transportation
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Spiral Hydrogen Comps
Public and private peers based on sector, stage, and business model.
| Company | Status | Est. Valuation | Rev Multiple |
|---|---|---|---|
| OpenAI | Private | $86.0B | ~40x |
| Cohere | Private | $5.0B | -- |
| Competitor 1 | Public | $XX.XB | XXx |
| Competitor 2 | Public | $XX.XB | XXx |
Spiral Hydrogen Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Pre Seed | Apr 30, 2026 | ||||
| Grant | Apr 1, 2026 | ||||
| Grant | Feb 1, 2026 | ||||
| Accelerator | Jun 20, 2025 | ||||
| Grant | May 23, 2025 |
Spiral Hydrogen Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Superangel | Pre Seed |
| Norrsken Foundation | Pre Seed |
| European Space Agency | Accelerator |
| ESA BIC Estonia | Accelerator |
| byFounders | Pre Seed |
| City of Tartu | Accelerator |
| Prototron | Grant |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 30, 2026
$3M round led by byFounders
- Apr 1, 2026
Secured $84K in grant funding.
Spiral Hydrogen Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Spiral Hydrogen's valuation, stock price, and market status.