Siobhan Toohill

Siobhan brings over 20 years’ experience leading sustainability in ASX50 companies, including as Australia’s first Chief Sustainability Officer in listed financial services. Her work spans climate action, net zero transition, natural capital, human rights, and social impact.

She advises business and government on climate, nature, anti-slavery, and gambling harm, and previously co-chaired the UN Environment Programme’s Banking Board, co-authoring the UN Principles for Responsible Banking. She also served on the UN’s Net-Zero Banking Alliance.

With a background in architecture and as deputy chair of the Green Building Council of Australia, she helped pioneer green-rated, energy-efficient developments.

Siobhan was named in AFR’s 2024 Women in Leadership Awards and received CEW’s 2023 INSEAD scholarship.