Boston Metal
PrivateLast Round
VC Round
May 20, 2026
Est. Valuation
$55M
Total Funding Raised
$609M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Boston Metal is a clean technology company that commercializes molten oxide electrolysis (MOE) to produce steel and high-value metals with zero carbon emissions.
Sector
Frontier & Industrial Tech
Verticals
Clean Manufacturing, Advanced Materials, Sustainable Materials
Business Model
B2B
Customer Profile
Services & Consulting, Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Boston Metal Comparables
Compare Boston Metal with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Electra | 83% | |
| Greeniron H2 AB | 82% | |
| Helios | 78% |
Boston Metal Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| VC Round | May 20, 2026 | ||||
| Grant | Mar 3, 2026 | ||||
| Convertible Debt | Jul 10, 2025 | ||||
| Series C Extension | Jan 30, 2024 | ||||
| Grant | Nov 27, 2023 | ||||
Series C | Sep 6, 2023 |
Key People
Founding team and executive leadership
Boston Metal Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| MIT | Series A, Series B |
| The Engine | Series B Extension, Series A, Series B |
| Engine Ventures | Series A, Series B |
| Climate Investment | Series B Extension, VC Round, Series C, Series B |
| International Finance Corporation | Series C |
| Prelude Ventures | Series B Extension, Series A, Series B, Series C |
| Fidelity Management & Research Company | Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors grew 43% MoM, reaching 8.3K.
- May 20, 2026
$75M round with Climate Investment and Tata Steel Limited.
Boston Metal 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 Boston Metal's valuation, stock price, and market status.
Is Boston Metal a public or private company?
Boston Metal is a private company.
What is the current stock price of Boston Metal?
Boston Metal is a private company with no public stock price. No recent secondary market data is available.
How much is Boston Metal worth (valuation)?
Valuation information for Boston Metal is not publicly available.
Can I buy Boston Metal stock?
Boston Metal 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 Boston Metal's last funding round?
Boston Metal's most recent funding round was Early Stage VC on March 3, 2026.
Who are the main investors in Boston Metal?
Key investors in Boston Metal include International Finance Corporation, Fidelity Management & Research Company, Breakthrough Energy Ventures, Breakthrough Energy Foundation, M&G Investments.
Will Boston Metal IPO soon?
No public IPO plans have been announced for Boston Metal.
How can I track Boston Metal secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Boston Metal's secondary market activity and sign up for updates.