OUR LEADERSHIP
Sami Rahman
CEO
Sami Rahman is a seasoned executive with 20+ years of experience in the building materials industry, specializing in product management, technology, and commercial strategy. Sami joined CleanFiber in early 2025 as President and General Manager and was promoted to CEO after driving major improvement initiatives in sales and operations. Prior to joining CleanFiber, Sami held a variety of leadership positions in Supply Chain, General Management & Product Management at James Hardie (JHX), a global leader of fiber cement siding, and ICP Group, a diversified manufacturer of roofing, coatings and insulation products, where he served as Executive Vice President and General Manager of the Specialty Coatings business unit. He holds Bachelors & Master’s degrees in Chemical & Environmental Engineering from the University of Toledo and an MBA from the University of Chicago Booth School of Business.
Don Simoneau
Chief Financial Officer
Don Simoneau has over 20 years of experience serving as CFO, SVP and/or CEO in six prior early and growth stage tech, clean-tech, and industrial businesses. He has successfully raised capital and debt financing, driven revenue growth and profits, and executed successful exit plans. Don also brings substantial commercial and operational leadership experience having led growing sales and service teams among his responsibilities. Don holds an MBA from Bentley University, and earned his Bachelors in Finance and Computer Science from Boston College.
WE'RE INSTALLERS, ENGINEERS, SCIENTISTS AND ENTREPRENEURS (AND WE LOVE BEING THE UNDERDOG).
CleanFiber® (formerly Ultracell Insulation) was conceived by veteran cellulose installers in Maine, who saw dwindling supplies of newsprint as a threat to their livelihood.
So they did something about it.
After creating a strong team, working like dogs for more than 9 years to perfect the process, and raising millions of dollars in investment, we launched commercial production of certified CleanFiber insulation in 2020, and have been shipping to happy customers ever since.
Our state-of-the-art production facility in Buffalo is currently ramping up and will produce over 3 million bags of insulation annually. These high production volumes allow us to offer our all-borate product at extremely competitive pricing.
Contact us to try CleanFiber today!
OUR BOARD
Board of Directors
Nate Lowbeer-Lewis
Chairman
Nate is a Principal at Spring Lane Capital, an investment firm committed to accelerating the deployment of emerging sustainable infrastructure assets. Prior to joining Spring Lane, he co-founded a new division of CPCS to help public and private sector clients develop infrastructure in emerging markets. He also serves on the board of DevEngine Partners.
Paul Atkinson
Director
Paul is a Managing Partner and Co-Founder of Climate Innovation Capital, which invests in companies delivering meaningful decarbonization across the economy. Paul also founded Southwest Sun Inc. where he has been a Managing Partner since 1990. He brings extensive experience as an entrepreneur, senior executive, and board member of numerous public and private companies.
Alexandre Martin-Min
Director
Alexandre is Head of Natural Capital & Impact Investments at AXA IM Alts part of the BNP Paribas Group, a world leader in alternative investments with over €188 billion of assets under management in real estate, infrastructure, alternative credit, private debt and private equity. He oversees the investment style and strategy of AXA IM Alts' Natural Capital & Impact Investments, including sourcing, managing and monitoring investment activities and portfolios for the platform. He also sits on the Impact Investment Committee, which guides the investment objectives and opportunities to directly address two global mega themes: Health & Financial Inclusion and Climate & Biodiversity.
Noah Lerner
Director
Noah is a Vice President at Spring Lane Capital, an investment firm committed to accelerating the deployment of emerging sustainable infrastructure assets. Noah brings extensive experience in project finance and climate policy, with prior roles spanning the private sector, NGOs, and state and federal government. He has also served in board observer roles with EVCS and Spring Free EV.