Scheduled sales are not required, only recommended. If an unscheduled sale is made, there might be insider trading issues, and might trigger an investigation.

Scheduled sales are not required, only recommended. If an unscheduled sale is made, there might be insider trading issues, and might trigger an investigation. That said, it would be easy to argue the sale was due to public information, i.e. the stock going up 100x in 6 months. See Rule 10b5-1