Immutep Limited appointed Lucy Turnbull AO as non-executive director effective immediately. Ms. Turnbull rejoins Immutep's board having previously served as its Chairman from October 2010 to November 2017, stepping down from the role only due to elevated professional and personal commitments at the time. Since then Ms. Turnbull has remained close to the company and following the recent tragic passing of Grant Chamberlain, has agreed to replace him as non-executive director.

Ms. Turnbull served on the boards of the NSW Cancer Institute, Sydney Children's Hospital Foundation, the Sydney Cancer Centre and the Sydney Festival. In 2011, Ms. Turnbull was appointed an officer of the order of Australia for her service to the community, local government and business, including through philanthropic contributions and fundraising for a range of medical, social welfare, educational, youth and cultural organisations. From 2015 to 2020 served as the inaugural chief commissioner of the Greater Sydney Commission, NSW state government body focused on delivering strategic planning for the whole of metropolitan Sydney.