Magrathea Metals
PrivateLast Round
Series A
May 5, 2026
Est. Valuation
$78.43M
Total Funding Raised
$105.3M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Magrathea Metals is a cleantech company that develops electrolytic technology to produce carbon-neutral magnesium metal from seawater and brines.
Sector
Frontier & Industrial Tech
Verticals
Advanced Materials, Defense Tech, Sustainable Materials, Supply Chain, Clean Manufacturing
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Magrathea Metals Comparables
Compare Magrathea Metals with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Big Blue Technologies | 82% | |
| Tidal Metals | 82% | |
| U.S. Green Magnesium, LLC | 79% |
Magrathea Metals Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A | May 5, 2026 | ||||
| Series A | Mar 1, 2026 | ||||
| Grant | Feb 1, 2024 | ||||
| Grant | Sep 22, 2023 | ||||
| Seed | Jun 7, 2023 |
Key People
Founding team and executive leadership
Magrathea Metals Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Capricorn Investment Group | Series A, Seed |
| Avila VC | Series A |
| EQT Foundation | Seed |
| Balerion Space Ventures | Series A |
| The Untitled ventures | Seed |
| OXCART Ventures | Series A |
| United States Department of Defense | Grant |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors increased 173% to 4.1K.
- May 18, 2026
Monthly visitors grew 107% MoM, from 1.9K to 4K.
Magrathea Metals 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.
Request accessFrequently Asked Questions
Common questions about Magrathea Metals's valuation, stock price, and market status.
Is Magrathea a public or private company?
Magrathea is a private company.
What is the current stock price of Magrathea?
Magrathea is a private company with no public stock price. No recent secondary market data is available.
How much is Magrathea worth (valuation)?
Valuation information for Magrathea is not publicly available.
Can I buy Magrathea stock?
Magrathea shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Magrathea's last funding round?
Magrathea's most recent funding round was Series A on May 5, 2026.
Who are the main investors in Magrathea?
Key investors in Magrathea include Capricorn Investment Group, Balerion Space Ventures, Resource Technology Capital.
Will Magrathea IPO soon?
No public IPO plans have been announced for Magrathea.
How can I track Magrathea secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Magrathea's secondary market activity and sign up for updates.