| Company | Timeline | Status | |
| JSS Group Limited Director • Managing Director | 1 Jan 2004←5 Years→13 May 2009 | Active | |
| West Coast Plant Limited Director • Director | 1 Jan 2004←5 Years→13 May 2009 | Active | |
| JSS Rail Limited Director • Managing Director | 1 Jan 2004←5 Years→3 Jun 2009 | Active | |
Bideem Construction Limited Director • Director | 1 Jan 2004←5 Years→13 May 2009 | Dissolved | |
| Sisk Consolidated Investments Limited Director • Engineer | 30 Oct 1992←17 Years→20 May 2010 | Active | |
| John Sisk & Son Limited Director • Managing Director | 26 Nov 1991←18 Years→20 May 2010 | Active | |
