[15] He has been instrumental in many activist campaigns in relation to ASX listed companies such as AMP,[16] Myer,[17] Cromwell Property Group[18] and VGI Partners.
[22] He is a member of the Australian Takeovers Panel, having been appointed by the governor general, the Hon Sir Peter Cosgrove, in 2015.
[33] In October 2019, Leibler led a delegation to Israel together with John Howard, Alexander Downer, Brendan Nelson, Wayne Swan and Stephen Conroy where they met with Benjamin Netanyahu and Reuven Rivlin.
[36] In September 2022, Leibler was in Israel where he met Israeli President Isaac Herzog and Alternate Prime Minister Naftali Bennett who he invited to visit Australia.
[41] He is recognised by Best Lawyers International[42] in the area of commercial law and has been ranked by Doyle's Guide Australia as ‘pre-eminent’ in the categories of private equity and corporate/M&A in Melbourne.