| Company | Timeline | Status | |
Sirigen Group Limited Director • Director | 29 Apr 2008←2 Years 5 Months→19 Oct 2010 | Dissolved | |
| Kowa Pharmaceutical Europe Co. Ltd Director • President | 16 Aug 2006←7 Years→11 Dec 2013 | Active | |
| Kowa Research Europe Limited Director • President | 1 Mar 2006←7 Years→11 Dec 2013 | Dissolved | |
