| Company | ISK PORT WASHINGTON LLC |
| Business Number | 4042841 |
| Company | ISK NEW HYDE PARK LLC |
| Business Number | 4379067 |
| Company | ISK LINDENHURST LLC |
| Business Number | 4381171 |
| Company | ISK EAST NORTHPORT LLC |
| Business Number | 4430741 |
| Company | ISK HICKSVILLE, LLC |
| Business Number | 3987341 |
| Company | ISK WANTAGH, LLC |
| Business Number | 3982342 |
| Company | ISK SYSTEMS, LLC |
| Business Number | 3894579 |