CleanFiber
PrivateLast Round
Series C
Oct 2, 2025
Est. Valuation
$10M
Total Funding Raised
$84.09M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
CleanFiber operates in Frontier & Industrial Tech and is based in Blasdell, New York. Its latest recorded funding round was a Grant round in October 2024.
CleanFiber is a manufacturing company that produces high-performance, carbon-negative cellulose insulation from recycled corrugated cardboard.
Sector
Frontier & Industrial Tech
Verticals
Sustainable Materials, Clean Manufacturing, Waste Management, Construction Tech
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
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% |
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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 |
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Key People
Founding team and executive leadership
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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 |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors grew 229% MoM to 3.2K.
- Oct 2, 2025
Raised $7M in Series C funding.
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CleanFiber 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 CleanFiber's valuation, stock price, and market status.
Is CleanFiber a public or private company?
CleanFiber is a private company.
What is the current stock price of CleanFiber?
CleanFiber is a private company, so its shares have no public market price. Caplight tracks CleanFiber's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is CleanFiber worth (valuation)?
CleanFiber's valuation is estimated at $10.0M based on funding round data.
Can I buy CleanFiber stock?
CleanFiber shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was CleanFiber's last funding round?
CleanFiber's most recent funding round was Series C on October 2, 2025.
Who are the main investors in CleanFiber?
Key investors in CleanFiber include Spring Lane Capital, IFG Asset Management, AXA IM Alts, 43North, Aligned Climate Capital.
Will CleanFiber IPO soon?
No public IPO plans have been announced for CleanFiber.
How can I track CleanFiber secondary market activity?
Caplight tracks bids, offers, and trades in CleanFiber's shares on secondary markets.