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
Advanced Materials, Clean Manufacturing, Sustainable Materials, Circular Economy
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting
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, so its shares have no public market price. Caplight tracks Boston Metal's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Boston Metal worth (valuation)?
Boston Metal's valuation is estimated at $55.0M based on funding round data.
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.
When was Boston Metal's last funding round?
Boston Metal's most recent funding round was VC Round on May 20, 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 in Boston Metal's shares on secondary markets.