CleanFiber makes high-performance carbon-negative building insulation from recycled corrugated cardboard.
CleanFiber has raised $4.5M in total funding. The most recent round was Convertible Note. The last funding was announced in July 2026.
CleanFiber's investors include National Science Foundation, Global Brain Corporation, National Grid, Aligned Climate Capital, Spring Lane Capital.
CleanFiber is headquartered in Buffalo, United States.
CleanFiber makes high-performance carbon-negative building insulation from recycled corrugated cardboard.
CleanFiber is at the Convertible Note stage.
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"CleanFiber — Funding & Investors." VCBacked, July 14, 2026, https://www.vcbacked.co/company/cleanfiber. Accessed September 29, 2026.
VCBacked. (2026). CleanFiber — Funding & Investors. Retrieved September 29, 2026, from https://www.vcbacked.co/company/cleanfiber
{{cite web |title=CleanFiber — Funding & Investors |url=https://www.vcbacked.co/company/cleanfiber |website=VCBacked |access-date=September 29, 2026}}Profile data sourced and verified per the VCbacked methodology · Last funding round dated