Fluxnium
PrivateLast Round
Seed
Sep 21, 2026
Total Funding Raised
$7M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Fluxnium operates in Energy & Sustainability and is based in Los Angeles, California. Its latest recorded funding round was a Seed round in September 2026.
Fluxnium is a clean-tech company that develops high-efficiency polymer fiber technology to extract uranium from seawater as a sustainable, domestic fuel supply for nuclear power.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Advanced Materials, Sustainable Materials
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting, Data as a Service
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Fluxnium Comparables
Compare Fluxnium with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| SuperCritical Technologies | 90% | |
| Energy Fuels Inc. | 68% | |
| JSC National Atomic Company Kazatomprom | 62% |
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Fluxnium Funding Rounds
Historical fundraising activity
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Fluxnium Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Constellation Technology Ventures | Seed |
| Active Impact Investments | Seed |
| Congruent Ventures | Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 21, 2026
$7M round led by Congruent Ventures.
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Recent news
Latest coverage and updates
- receives_financingSep 21, 2026
Fluxnium, Inc. receives a $7M Seed round led by Congruent Ventures, with participation from Constellation Technology Ventures and Active Impact Investments, to develop, pilot-test, and scale its uranium-from-seawater technology in California on Sep 21st '26.
- is_developingSep 16, 2026
As of Sep 16th '26, Fluxnium, Inc. is developing seawater uranium-extraction technology to address potential fuel supply challenges as nuclear power demand grows worldwide.
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Fluxnium 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 Fluxnium's valuation, stock price, and market status.
Is Fluxnium a public or private company?
Fluxnium is a private company.
What is the current stock price of Fluxnium?
Fluxnium is a private company, so its shares have no public market price. Caplight tracks Fluxnium's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Fluxnium worth (valuation)?
Valuation information for Fluxnium is not publicly available.
Can I buy Fluxnium stock?
Fluxnium shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Fluxnium's last funding round?
Fluxnium's most recent funding round was Seed on September 21, 2026.
Who are the main investors in Fluxnium?
Key investors in Fluxnium include Congruent Ventures.
Will Fluxnium IPO soon?
No public IPO plans have been announced for Fluxnium.
How can I track Fluxnium secondary market activity?
Caplight tracks bids, offers, and trades in Fluxnium's shares on secondary markets.