Greg Rosshandler is an Australian businessman and philanthropist based in Melbourne, serving as Managing Director of Peachtree Capital Pty Ltd, an investment group he founded in 2006 that controls a broad portfolio of property and listed equities. He brings extensive experience in financial services, including involvement in the insurance industry, contributing to his track record in organizational success within Melbourne's investment landscape. Along with his wife Anne, he is a U.S. philanthropist who has donated significantly to Israeli think tanks focused on national security, particularly as a major founding donor to the Jerusalem Institute for Strategic Studies (JISS), a conservative security think tank. He sponsored JISS's opening conference at Jerusalem's Menachem Begin Heritage Center, and their contributions support the Anne and Greg Rosshandler Senior Fellow position, currently held by figures like former Israeli National Security Advisor Yaakov Amidror, promoting hawkish security perspectives.