
(CHARLOTTESVILLE April 7, 2025) — The GreenBlue Board of Directors has elected two new members, Jeffrey Fielkow, CEO of Circular Action Alliance, and Jennifer Ronk, Senior Sustainability Manager at Dow. With their combined experience in sustainability research and industry collaboration, Jennifer and Jeffrey will serve as strategic advisors advancing GreenBlue’s mission of building a regenerative, just, and sustainable materials economy.
“We’re thrilled to welcome Jennifer and Jeffrey to GreenBlue’s Board of Directors,” said GreenBlue Board of Directors President Joe Kofler. “Jennifer has spent her career at the forefront of initiatives driving a circular plastics economy, and Jeffrey brings visionary leadership forged from decades of experience in packaging and sustainability. Their combined expertise will be invaluable as we continue to advance our industry’s sustainability goals.”
Members of GreenBlue’s Board of Directors are stewards of the environmental nonprofit and its seven projects, including The Sustainable Packaging Coalition and How2Recycle. GreenBlue and its projects comprise more than 1,000 member organizations. Now, GreenBlue’s Board comprises 12 independent members who bring expertise from a diversity of roles across industries and the value supply chain.
The GreenBlue Board of Directors strategically supports the organization’s mission of accelerating the transition to a regenerative, just, and sustainable materials economy. GreenBlue advances this mission through its members, providing them with the trustworthy and compelling information they need to prioritize sustainable materials progress over any one organization’s agenda.
“With experience at a sustainability research NGO and now a materials science company, I’m a firm believer that science, courageous collaboration, and tangible action are essential for accelerating the transition to a regenerative, just, and sustainable future,” Jennifer said. “I’m thrilled to join the GreenBlue Board, where I can leverage these experiences to advance the organization’s mission.”
Jeffrey added, “Throughout my career, I’ve been driven by the belief that system-wide collaboration is essential for building a truly circular and sustainable economy. Today, I’m honored to join the GreenBlue Board of Directors, where I can contribute to an organization that’s aligned with my own values and professional journey. I’m a strong believer in GreenBlue’s mission of advancing a regenerative and just materials economy, and I look forward to helping guide the organization as it fulfills its bold ambitions.”
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About Jennifer Ronk
Jennifer Ronk, North America Packaging & Specialty Plastics Senior Sustainability Manager at Dow, joined the company’s Packaging & Specialty Plastics Division in 2018. In her role, she fosters collaboration across the entire value chain to advance sustainability. Jennifer also serves on the boards of AMERIPEN and Houston Wilderness, and works on the Sustainability Committees of The American Chemistry Council’s Plastic Division and The Plastics Industry Association (PLASTICS).
Before joining Dow, Jennifer was a Senior Research Scientist and Program Director for HARC, a sustainability research hub, where she led the Environmental Science and Energy Efficiency Programs. She has also served as the Deputy Director for the Renewable Energy and International Law (REIL) Network and as the Vice-President of Applied Environmental Solutions. Jennifer earned her Master of Environmental Management degree from Yale University.
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About Jeffrey Fielkow
Jeffrey Fielkow is the CEO of Circular Action Alliance (CAA), the Producer Responsibility Organization tasked with implementing packaging and paper Extended Producer Responsibility in four U.S. states. He is a seasoned executive and four-time CEO whose career has centered on sustainability, packaging, and corporate leadership. Jeffrey also serves on the Board of Directors for TriMas Corporation, as the Chair of the organization’s Compensation Committee and a member of TriMas’s Audit and Governance & Nominating Committees.
With decades of experience in packaging and sustainability, Fielkow has held leadership roles at Tetra Pak, Waste Management, ReCommunity, and ID Images. His leadership philosophy centers on the intersection of purpose and profit, and is driven by innovation, accountability, and sustainable business transformation. Fielkow holds an MBA from Marquette University and a bachelor’s degree from the University of Wisconsin-Madison.
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About GreenBlue
GreenBlue is an environmental nonprofit on a mission to accelerate the transition to a regenerative, just, and sustainable materials economy. GreenBlue is the parent nonprofit of seven projects, including The Sustainable Packaging Coalition, How2Recycle, and The Recycled Material Standard. Through these projects and their hundreds of members, GreenBlue strives to be the most reliable and accurate source of truth compelling the packaging value chain to construct environmentally regenerative, socially responsible systems. Learn more at https://greenblue.org/.