| Current (3) |
| Management | 2025 |
| Founder | 1989 |
| Management | 2026 |
| Former (21) |
| Management | 2004 – 2005 |
| Management | 1989 – 1990 |
| Audit | 1999 – 2002 |
| Chief Executive Officer | 2025 – 2026 |
| Deputy | 1989 – 1996 |
| Management | 1999 – 2001 |
| Management | 1997 – 1999 |
| Chief Executive Officer | 1989 – 1993 |
| Chief Executive Officer | 2017 – 2018 |
| Management | 2016 – 2017 |
| Chief Executive Officer | 1993 – 1995 |
| Chief Executive Officer | 2007 – 2008 |
| Management | 2025 – 2025 |
| Chief Executive Officer | 2005 – 2007 |
| Management | 2014 – 2016 |
| Deputy | 1989 – 1999 |
| Chief Executive Officer | 2018 – 2025 |
| Chief Executive Officer | 2001 – 2004 |
| Management | 1989 – 1997 |
| Deputy | 1989 – 1994 |
| Chief Executive Officer | 2008 – 2011 |