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 operates in Energy & Sustainability and is based in Rotterdam. Its latest recorded funding round was a Pre Seed round in April 2026.
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
Renewable Energy, Alternative Fuels, Clean Manufacturing
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting, Government Contracts
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Spiral Hydrogen Comparables
Compare Spiral Hydrogen with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Hysata | 80% | |
| NewTrace | 79% | |
| Peregrine Hydrogen Inc. | 79% |
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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 |
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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.
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Spiral Hydrogen Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Spiral Hydrogen's valuation, stock price, and market status.
Is Spiral Hydrogen a public or private company?
Spiral Hydrogen is a private company.
What is the current stock price of Spiral Hydrogen?
Spiral Hydrogen is a private company, so its shares have no public market price. Caplight tracks Spiral Hydrogen's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Spiral Hydrogen worth (valuation)?
Valuation information for Spiral Hydrogen is not publicly available.
Can I buy Spiral Hydrogen stock?
Spiral Hydrogen shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Spiral Hydrogen's last funding round?
Spiral Hydrogen's most recent funding round was Pre Seed on April 30, 2026.
Who are the main investors in Spiral Hydrogen?
Key investors in Spiral Hydrogen include byFounders.
Will Spiral Hydrogen IPO soon?
No public IPO plans have been announced for Spiral Hydrogen.
How can I track Spiral Hydrogen secondary market activity?
Caplight tracks bids, offers, and trades in Spiral Hydrogen's shares on secondary markets.