Solid Carbon
PrivateLast Round
Accelerator
Mar 25, 2025
Total Funding Raised
$548,436
Company Overview
Solid Carbon is a construction materials company that develops and provides carbon-negative concrete additives and ingredients to reduce the carbon footprint of the built environment.
Sector
Energy & Sustainability
Verticals
Sustainable Materials, Carbon Capture, Construction Tech, Green Building, Advanced Materials
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.
Solid Carbon Comparables
Compare Solid Carbon with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Carbon Limit | 91% | |
| Concrete4Change | 85% | |
| ecoLocked | 83% |
Solid Carbon Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Accelerator | Mar 25, 2025 | ||||
| Grant | Mar 12, 2025 | ||||
| Grant | Jul 1, 2024 | ||||
| Seed | Apr 25, 2024 | ||||
| Grant | Dec 2, 2022 |
Solid Carbon Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Oregon Innovation Council | Grant |
| ONAMI | Early Funding |
| Portland Seed Fund | Seed |
| Oregon Business Development Department | Grant |
| The Lemelson Foundation | Accelerator |
| Department of Energy | Grant |
| National Science Foundation | Grant |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jun 20, 2026
Monthly visitors increased 166% MoM, reaching 2.8K.
- Mar 25, 2025
Received funding from Third Derivative, The Lemelson Foundation, and Rocky Mountain Institute.
Solid Carbon Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Request accessFrequently Asked Questions
Common questions about Solid Carbon's valuation, stock price, and market status.
Is Solid Carbon a public or private company?
Solid Carbon is a private company.
What is the current stock price of Solid Carbon?
Solid Carbon is a private company, so its shares have no public market price. Caplight tracks Solid Carbon's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Solid Carbon worth (valuation)?
Valuation information for Solid Carbon is not publicly available.
Can I buy Solid Carbon stock?
Solid Carbon shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Solid Carbon's last funding round?
Solid Carbon's most recent funding round was Accelerator on March 25, 2025.
Who are the main investors in Solid Carbon?
Key investors in Solid Carbon include Oregon Innovation Council, ONAMI, Portland Seed Fund, Oregon Business Development Department, The Lemelson Foundation.
Will Solid Carbon IPO soon?
No public IPO plans have been announced for Solid Carbon.
How can I track Solid Carbon secondary market activity?
Caplight tracks bids, offers, and trades in Solid Carbon's shares on secondary markets.