Thomas Zinnöcker has held management positions at Krantz TKT GmbH, Deutsche Telekom Immobilien und Service GmbH, GSW Immobilien AG, Gagfah S.A., Vonovia SE and ista International GmbH. From 2014 to 2020, he was Chairman of the Board of the Institute for Corporate Governance in the German Real Estate Industry e.V. He also was a member of the Board of the German Real Estate Association ZIA. Thomas Zinnöcker currently holds various supervisory board positions.