How much has CleanFiber raised?
$136.3Macross 14 recorded rounds · Aug 2022 – Sep 2025
Most recently, CleanFiber raised $6.5M in its Early Stage VC (Sep 2025).
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- ·The complete investor list: 43 names
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CleanFiber round by round
14 rounds4 investors participated
29 investors participated
188 investors participated
111 investors participated
57 investors participated
86 investors participated
+ 8 earlier rounds · a free account shows the full history
How much has CleanFiber raised?
CleanFiber has raised $136 million across 14 recorded rounds since 2018. The largest was a $7.3 million early-stage round in Aug 2022; the most recent was a $6.5 million early-stage round in Sep 2025.
CleanFiber has filed 14 Form Ds with the SEC since 2018, most recently in Oct 2025 ($34 million sold to 29 investors).
CleanFiber investors
43 investors are on record for CleanFiber, including US National Science Foundation, Global Brain, U.S. Department of Energy and Keiretsu Forum. The early-stage round in Sep 2025 drew 4 investors.
For fundraisers
Raising for a company like CleanFiber?
43 investors have backed CleanFiber.
Frequently asked about CleanFiber
- How much has CleanFiber raised?
- CleanFiber has raised $136.3M in total across 14 recorded funding rounds.
- When was CleanFiber's last funding round?
- CleanFiber's most recent recorded round was Early Stage VC in Sep 2025, raising $6.5M.