CleanFiber

Buffalo, United States

CleanFiber makes high-performance carbon-negative building insulation from recycled corrugated cardboard.

$34.0M raised

Sep 2025

Venture - Series Unknown

Top Investors

National Science FoundationGlobal Brain CorporationSpring Lane CapitalNational GridMassChallenge

19,000+ verified contacts

Emails, phones & LinkedIn profiles

How much funding has CleanFiber raised?

CleanFiber has raised $34.0M in total funding. The most recent round was Venture - Series Unknown. The last funding was announced in September 2025.

Who are CleanFiber's investors?

CleanFiber's investors include National Science Foundation, Global Brain Corporation, Spring Lane Capital, National Grid, MassChallenge.

Where is CleanFiber headquartered?

CleanFiber is headquartered in Buffalo, United States.

What does CleanFiber do?

CleanFiber makes high-performance carbon-negative building insulation from recycled corrugated cardboard.

What stage is CleanFiber at?

CleanFiber is at the Venture - Series Unknown stage.

Cite this page

Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated September 25, 2025.

MLA

"CleanFiber — Funding & Investors." VCBacked, September 25, 2025, https://www.vcbacked.co/company/cleanfiber. Accessed July 1, 2026.

APA

VCBacked. (2025). CleanFiber — Funding & Investors. Retrieved July 1, 2026, from https://www.vcbacked.co/company/cleanfiber

Wikipedia (cite web)

{{cite web |title=CleanFiber — Funding & Investors |url=https://www.vcbacked.co/company/cleanfiber |website=VCBacked |access-date=July 1, 2026}}

Profile data sourced and verified per the VCBacked methodology. Last funding round dated September 25, 2025.