Our Team
Chairperson of the Executive Advisory Board
Prof. Piers Cumberlege
Chairperson of the Executive Advisory Board
Prof. Piers Cumberlege
Prof. Piers Cumberlege is the Chairperson of the Executive Advisory Board at Sayari Earth, an experienced global leader whose career spans multinational corporations, private equity, governments, and civil society across multiple continents. He has served on numerous public and private boards, including the South Pole Group, and currently advises on climate finance and fund structuring. A former Head of Partnership at the World Economic Forum, Piers holds advanced degrees from Oxford University and Coventry University and is a certified corporate director.
Member of the Executive Advisory Board
Prof. Daniel Halbheer
Member of the Executive Advisory Board
Prof. Daniel Halbheer
Prof. Daniel Halbheer is a Member of the Executive Advisory Board at Sayari Earth, an Associate Professor of Marketing and the Academic Director of the Climate and Earth Center at HEC Paris. He specializes in circular business models, supply chain decarbonization, and corporate social responsibility. Prof. Halbheer leads influential research on sustainable business practices and holds the FII Institute Research Chair on “Business Models for the Circular Economy.”
Member of the Executive Advisory Board
Nahale Ståhl Hallengren
Member of the Executive Advisory Board
Nahale Ståhl Hallengren
Nahale Ståhl Hallengren is a Member of the Executive Advisory Board at Sayari Earth, a seasoned legal executive and the General Counsel at Nordea Bank. Recognised as a leading voice in legal services and financial crime prevention, she brings deep expertise in governance, compliance, and strategic risk management. Nahale holds a JD from Columbia Law School and an Executive MBA from HEC Paris (‘24). She has been named to the Legal500 GC Powerlist Denmark in both 2024 and 2025, reflecting her leadership within the Nordic legal and financial sectors.