Last updated:
| Corporation | Joined at | |
|---|---|---|
|  | Green Holdings | almost 16 years | 
|  | Perkone | almost 16 years | 
|  | Big Shadows | about 16 years | 
|  | Big Guns Inc. | over 18 years | 
|  | BIG VIKINGS | almost 19 years | 
|  | School of Applied Knowledge | almost 19 years |