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CleanFiber

Buffalo, US · Founded 2013 · Delaware corporation · 14 known investors

Find your way into CleanFiber

CleanFiber manufactures cellulose-based insulation from recycled newsprint for the building materials industry. The company produces and distributes residential and commercial insulation through a production facility in Buffalo.

Advanced ManufacturingCircular EconomyCleantechConstruction TechNew Materials

Founders & leadership

SRSami Rahman
Sami RahmanCEO
EG
Erik GregoryChief Financial Officer
JS
Jonathan StrimlingExecutive
JA
James AustinExecutive
MP
Marco PetersonExecutive

Board

NLNoah Lerner
Noah LernerBoard MemberVice President at Spring Lane Capital
NLNate Lowbeer-Lewis
Nate Lowbeer-LewisBoard directorPrincipal at Spring Lane Capital
PAPaul Atkinson
Paul AtkinsonBoard directorCo-Founder and Managing Partner at Climate Innovation Capital
AM
Alexandre Martin-MinBoard director
MB
Mark BrandsteinBoard director
DT
Daniel ThompsonBoard director

Investors · 14

Boston Harbor Angelslisted by Boston Harbor AngelsBoston · $250K – $1.5M
Clean Energy Venturelisted by Clean Energy VentureBoston
Climate Innovation Capitallisted by Climate Innovation CapitalToronto

How we know: Climate Innovation Capital's portfolio page · Not right? Tell us

E8 Angelslisted by E8 Angels

How we know: E8 Angels's portfolio page · Not right? Tell us

Global Brainlisted by Global BrainTokyo · $100K – $184M

How we know: Global Brain's portfolio page · Not right? Tell us

Keiretsu Forumlisted by Keiretsu ForumSan Francisco East Bay · $250K – $2M

How we know: Keiretsu Forum's portfolio page · Not right? Tell us

NXT Ventureslisted by NXT VenturesMarblehead · $250K – $1M

How we know: NXT Ventures's portfolio page · Not right? Tell us

Skyview Ventureslisted by Skyview VenturesNashville

How we know: Skyview Ventures's portfolio page · Not right? Tell us

Spring Lane Capitallisted by Spring Lane CapitalMontreal

How we know: Spring Lane Capital's portfolio page · Not right? Tell us

SustainVClisted by SustainVCBoston · $500K – $1M

How we know: SustainVC's portfolio page · Not right? Tell us

Walnut Venture Associateslisted by Walnut Venture AssociatesWellesley

How we know: the VCSheet dataset · Not right? Tell us

WNY Impact Investment Fundlisted by WNY Impact Investment FundBuffalo

How we know: WNY Impact Investment Fund's portfolio page · Not right? Tell us

Clean Energy VenturesreportedBoston · $100K – $5M

How we know: the VCSheet dataset · Not right? Tell us

Reported raises · per SEC filings

Form D private placements

$114.2M disclosed across 18 of 21 rounds · 2016–2026

▶$4.5MraisedJul 2026 · 4 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Nate Lowbeer-LewisDirector
  • Noah LernerDirector
  • Paul AtkinsonDirector
  • Alexandre Martin-MinDirector
  • Sami RahmanExecutive Officer, Director
  • Erik GregoryExecutive Officer
Offering amount
$9M
Amount sold
$4.5M
First sale
Jun 2026
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$6.5MraisedOct 2025 · 4 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Sami RahmanExecutive Officer
  • Paul AtkinsonDirector
  • Noah LernerDirector
  • Alexandre Martin-MinDirector
  • Nate Lowbeer-LewisDirector
Offering amount
$27.5M
Amount sold
$6.5M
First sale
Sep 2025
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$34MraisedOct 2025 · 29 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Noah LernerDirector
  • Sami RahmanExecutive Officer
  • Nate Lowbeer-LewisDirector
  • Paul AtkinsonDirector
  • Alexandre Martin-MinDirector
Offering amount
$34M
Amount sold
$34M
First sale
Sep 2025
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$28.2MraisedApr 2024 · 188 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Jonathan StrimlingExecutive Officer, Director
  • Donald A. SimoneauExecutive Officer
  • Mark BernfeldDirector
  • Paul AtkinsonDirector
  • Cynthia FiggeDirector
  • Timothy BernlohrDirector
  • Nathaniel Lowbeer-LewisDirector
  • Eric ChapmanDirector
Offering amount
$32.3M
Amount sold
$28.2M
First sale
Mar 2024
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$4.3MraisedOct 2023 · 111 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Tope AdegunDirector
  • Mark BernfieldDirector
  • Timothy BernlohrDirector
  • Eric ChapmanDirector
  • Cynthia FiggeDirector
  • Donald A. SimoneauExecutive Officer
  • Mark BrandsteinDirector
  • James RubinDirector
  • Jonathan StrimlingExecutive Officer, Director
  • Turner SmithDirector
Offering amount
$12.5M
Amount sold
$4.3M
Minimum investment
$10K
First sale
Sep 2023
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$1.7MraisedMay 2023 · 57 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Eric ChapmanDirector
  • Cynthia FiggeDirector
  • Turner SmithDirector
  • Mark BrandsteinDirector
  • Donald A. SimoneauExecutive Officer
  • Tope AdegunDirector
  • Tim BernlohrDirector
  • James RubinDirector
  • Jonathan StrimlingExecutive Officer, Director
  • Mark BernfieldDirector
Offering amount
$15M
Amount sold
$1.7M
First sale
Apr 2023
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$7.3MraisedAug 2022 · 86 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Mark BrandsteinDirector
  • Cynthia FiggeDirector
  • Eric ChapmanDirector
  • Jonathan StrimlingExecutive Officer, Director
  • Turner SmithDirector
  • Donald A. SimoneauExecutive Officer
  • Tim BernlohrDirector
  • James RubinDirector
  • Mark BernfieldDirector
Offering amount
$30M
Amount sold
$7.3M
Minimum investment
$10K
First sale
Aug 2022
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$5.8MraisedSep 2021 · 46 investors · Manufacturing
Rule 506(b)
Officers, directors & promoters on the filing
  • Donald A. SimoneauExecutive Officer
  • Curtis FischerExecutive Officer
  • James RubinDirector
  • Tim BernlohrDirector
  • Jonathan StrimlingExecutive Officer, Director
  • Cynthia FiggeDirector
  • Mark BrandsteinDirector
  • Eric ChapmanDirector
  • Turner SmithDirector
  • Mark BernfieldDirector
Offering amount
$7.5M
Amount sold
$5.8M
First sale
Sep 2021
Incorporated
Limited Liability Company, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Non-dilutive funding · 2 SBIR/STTR awards

Federal grants — no equity taken
AgencyPhaseYearAmount
National Science FoundationPhase I2016$150K
Environmental Protection Agency (EPA)Phase I2014$100K

Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.

In the news

CleanFiber Raises $28M in Series B Fundingfinsmes.com · Apr 2024

Frequently asked questions

What does CleanFiber do?
CleanFiber manufactures cellulose-based insulation from recycled newsprint for the building materials industry. The company produces and distributes residential and commercial insulation through a production facility in Buffalo.
Who are CleanFiber's investors?
CleanFiber's investors include Aligned Climate Capital, Boston Harbor Angels, Clean Energy Venture, Climate Innovation Capital, E8 Angels, Global Brain, Keiretsu Forum, NXT Ventures and 6 more.
How much funding has CleanFiber raised?
CleanFiber has disclosed $114.2M raised across 18 of its 21 known rounds.
Where is CleanFiber headquartered?
CleanFiber is headquartered in Buffalo, US.