How and why would that be illegal? He owns the stock. At a certain price it is worth keeping and as the price goes up he has the right to take some off of the t

How and why would that be illegal? He owns the stock. At a certain price it is worth keeping and as the price goes up he has the right to take some off of the table just list as the stock tanks he has the right to secure some of his wealth, especially since he has another company that seems to be his real focus.