Magrathea Metals
PrivateLast Round
Series A
Mar 1, 2026
Est. Valuation
$78.43M
Total Funding Raised
$53.6M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Magrathea Metals operates in Frontier & Industrial Tech and is based in San Francisco, California. Its latest recorded funding round was a Series A round in March 2026.
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, Clean Manufacturing, Defense Tech, Sustainable Materials
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts, Services & Consulting
AI Layer
Non-AI
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 |
|---|---|---|
| Tidal Metals | 88% | |
| U.S. Green Magnesium, LLC | 83% | |
| Big Blue Technologies | 81% |
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Magrathea Metals Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A | Mar 1, 2026 | ||||
| Debt | Jan 7, 2026 | ||||
| Grant | Feb 1, 2024 | ||||
| Seed | Jun 7, 2023 |
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Key People
Founding team and executive leadership
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Magrathea Metals Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Capricorn Investment Group | Series A, Seed |
| EQT Foundation | Seed |
| Balerion Space Ventures | Series A |
| The Untitled ventures | Seed |
| OXCART Ventures | Series A |
| United States Department of Defense | Grant |
| Necessary Ventures | Seed |
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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.
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Recent news
Latest coverage and updates
- attends_eventOct 11, 2026
Magrathea Metals attends the OVNI-Gigascale event.
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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.
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Frequently Asked Questions
Common questions about Magrathea Metals's valuation, stock price, and market status.
Is Magrathea Metals a public or private company?
Magrathea Metals is a private company.
What is the current stock price of Magrathea Metals?
Magrathea Metals is a private company, so its shares have no public market price. Caplight tracks Magrathea Metals's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Magrathea Metals worth (valuation)?
Magrathea Metals's valuation is estimated at $78.4M based on funding round data.
Can I buy Magrathea Metals stock?
Magrathea Metals shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Magrathea Metals's last funding round?
Magrathea Metals's most recent funding round was Series A on March 1, 2026.
Who are the main investors in Magrathea Metals?
Key investors in Magrathea Metals include Capricorn Investment Group, Balerion Space Ventures, VoLo Earth Ventures, Resource Technology Capital.
Will Magrathea Metals IPO soon?
No public IPO plans have been announced for Magrathea Metals.
How can I track Magrathea Metals secondary market activity?
Caplight tracks bids, offers, and trades in Magrathea Metals's shares on secondary markets.