The selling of his stock was announced in November.
P.S. I'm very surprised to see this reaction after hours. Everyone of any financial sense knew that this was planned months ago.
This so will pass after a few days or weeks.
Up after the sales. The key will be how many institutions will back fill the sales in the next week.
If it drops 10 of more points I may be concerned.
If less than 10 points I will feel comfortable for the long term.