If this was a retail subscription, it belongs absolutely to the person subscribed. They are the only ones who will get any notification. The company has no rights to transfer or cancel. Nobobdy should know the password except the individual, this is a breach of terms. As such, the use of a company credit card to pay for a retail subscription for employees is not something I can recommend to any business. If on the other hand it was a team or enterprise subscription, then Adobe provides tools to monitor use.