Individuals and entities are listed very specifically under SEMA. The sanctions themselves apply to the specific individuals or entities that are listed. In this way, there's a dealings prohibition that is put on Canadians, preventing them from being able to deal or to transact with those specific individuals or entities.
That said, when we're talking about inadmissibility, the inadmissibility would apply to individuals and entities that are listed under SEMA. Shareholders, for instance, may or may not be listed individually. Therefore, the inadmissibility applies only to those that are actually listed under SEMA.