Following the launch of the Ellen MacArthur Foundation’s new strategy, we are pleased to welcome new senior leaders and trustees to the team. Collectively, they will build an operational engine for global delivery, translate our strategy into action, and spearhead our digital innovation agenda — from harnessing new technologies, including AI and digital product passports, to scaling circular design for electronics and critical minerals material recovery.
From Left to right: Ellen MacArthur, Fiona Treharne, Jonquil Hackenberg
They will bring a depth of experience in leadership and digital technology, proven track record in delivering impact and mobilising finance, and global mindset to drive our implementation strategy, designed to break through systemic barriers across three key sectors — plastics and packaging, critical minerals, and fashion and textiles — to make the circular economycircular economyA systems solution framework that tackles global challenges like climate change, biodiversity loss, waste, and pollution. It is based on three principles, driven by design: eliminate waste and pollution, circulate products and materials (at their highest value), and regenerate nature. competitive now.
Welcoming the new team members, the Foundation’s CEO, Jonquil Hackenberg, said: “We've spent years building toward this new phase of focus and action. We’re ready to bring the right networks together and harness technology to accelerate change. Our new additions bring a wealth of experience in delivering impact on a global scale that will help us move further, faster.”
Executive leaders and directors
Fiona Treharne
Nathan Allen
Sean Jones
Haley Lieberman
Fiona Treharne
Chief Operating Officer
With more than 20 years' leadership and business transformation experience, Fiona was the inaugural COO at The Earthshot Prize, where she played a pivotal role in scaling it to become one of the world’s most prestigious environmental prizes, and served as a strategic consultant to The Royal Foundation of The Prince and Princess of Wales. Fiona worked at global law firms Allen & Overy, White & Case, and Freshfields, first as a practising lawyer and then in global leadership roles, and was the founder and CEO of the Renaissance Photography Prize — raising funds for the Lavender Trust at Breast Cancer Care. She was awarded an MBE in 2018 for services to business and charity.
Fiona said: “The circular economy just makes so much sense. I first encountered the concept at Freshfields, seeing the traction it gained within the business community, and later at The Earthshot Prize I was privileged to witness the extraordinary innovators turning it into reality around the world. I’m delighted to be joining the Foundation’s team as we work to accelerate the transition to a circular economy and build a future in which business, society, and nature can all thrive.”
Trustees
Jamie Butterworth
Robert Metzke
Hong Paterson
Jamie Butterworth
Former CEO of the Ellen MacArthur Foundation, Jamie is a founding partner at Circularity Capital, a specialist investment firm supporting the growth of businesses enabling the circular economy. He brings more than 15 years’ experience investing in and scaling circular business models to our UK board of trustees, as well as a deep understanding of the commercial potential and practical considerations of scaling circularity across a wide range of industry sectors.
