CleanFiber
PrivateLast Round
Series C
Oct 2, 2025
Est. Valuation
$10M
Total Funding Raised
$82.5M
Momentum
Top 50%
of companies Caplight tracks
Company Overview
CleanFiber is a manufacturing company that produces high-performance, carbon-negative cellulose insulation from recycled corrugated cardboard.
Sector
Frontier & Industrial Tech
Verticals
Sustainable Materials, Green Building, Clean Manufacturing, Waste Management
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
CleanFiber Comparables
Compare CleanFiber with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Greenfiber | 83% | |
| Fiberlite Technologies, Inc. | 82% | |
| Nu-Wool Co., Inc. | 79% | |
CleanFiber Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Oct 2, 2025 | ||||
| Grant | Oct 25, 2024 | ||||
| Series B | Apr 15, 2024 | ||||
| VC Round | Jun 23, 2023 | ||||
| VC Round | May 1, 2023 | ||||
Series A Extension | Dec 8, 2022 |
Key People
Founding team and executive leadership
CleanFiber Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Ahlström Invest | Series B |
| Spring Lane Capital | Series B, Grant |
| Lapis Advisers | Debt |
| Launchpad Venture Group | VC Round |
| IFG Asset Management | VC Round, Financing, Series A |
| Global Brain Corporation | Series B |
| AXA IM Alts | Series B, Series A Extension |
Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 2, 2025
Raised $7M in Series C funding.
- Jan 1, 2025
Sami Rahman appointed as general manager and president.
CleanFiber Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about CleanFiber's valuation, stock price, and market status.