Siobhan is an experienced executive and company director with expertise in sustainability, governance, risk management and corporate reporting. She most recently served as Chief Sustainability Officer at Westpac Banking Group and previously held senior sustainability leadership positions with Westpac and Stockland.
Siobhan currently serves as a Non‑Executive Director of Landcom, Trustee of the Greater Sydney Parklands Trust and is a former Co‑Chair of the UN Environment Program Finance Initiative’s Banking Board which oversees the Principles for Responsible Banking. She brings extensive experience in sustainability strategy, disclosure, governance and organisational accountability across the financial services, property and public sectors.
Siobhan was appointed on 22 August 2026 and her current term ends on 22 August 2030.