Marc Wainer's primary focus is on structuring corporate transactions, acquisitions and disposals, as well as being responsible for the day-to-day operations of Redefine.

Wainer served as Co-Chief Executive Officer at Redefine Properties Limited and also its Joint Chief Executive Officer. He has over 35 years' experience in property asset management and negotiation. He has been an Executive Chairman at Redefine Properties Limited since August 1, 2014 and has been its Executive Director since November 1, 1999. He serves as the Chairman of Prima Property Trust. He served as the Chairman of ApexHi Properties Ltd and its Director since March 5, 2001. Mr. Wainer has been Non Executive Director of Cromwell Property Group since January 29, 2010.

Wainer has been Non-Executive Director of Redefine International P.L.C since November 2007, Non-Executive Director of Redefine Properties International Limited since November 1, 1999 and Director of RI plc and RI Limited. He serves as an Independent Non-Executive Director of The Pivotal Fund Limited. He has been Non Executive Director of Hyprop Investments Limited since March 12, 2002 until June 27, 2013. He has been an Executive Director at Fountainhead Property Trust Management Limited since May 29, 2013. He serves as a Director of The Cromwell Group (Aus). He served as a Non-Executive Director of Cromwell Diversified Property Trust.

Wainer served as an Executive Director of Madison Property Fund Managers Limited since September 17, 2003.

Wainer served as Director of Wichford plc since July 2011.