| Benedikt Burchard Maria Ortmann | Director | 21 Oct 2014 | 24 Nov 2015 | German | 59 years |
| Coenraad Jan Phaf | Director | 15 May 2020 | 15 Apr 2021 | Dutch | 45 years |
| Giles David Braxton | Director | 31 May 2013 | 21 Oct 2014 | British | 58 years |
| Henry Michael Shepherd-cross | Director | 31 May 2013 | 21 Oct 2014 | British | 57 years |
| Johannes Vetsch | Director | 10 Jan 2017 | 15 May 2020 | Swiss | 44 years |
| Paolo Sereni | Director | 15 Dec 2016 | 15 May 2020 | Italian | 40 years |
| Philippe Francois Flamand | Director | 24 Sept 2015 | 10 Jan 2017 | France | 44 years |
| Rodrigo Jacob Weiss | Director | 24 Sept 2015 | 10 Jan 2017 | Switzerland | 48 years |
| Scott Leitch Mackenzie | Director | 15 May 2020 | 20 Jul 2021 | British | 57 years |
| Stephanie Harbeck | Director | 21 Oct 2014 | 24 Nov 2015 | German | 41 years |