Normally, you can't just "willy nilly" buy/sell as an insider
Usually big transactions by an insider require a lot of "up front" notification about what is being "planned", that is, difficult to be "in response" to an event, etc...
Not saying that you can't do (evil) planning months in advance, just pointing out it's different for them.
If this was done rather adhoc, you can bet that the SEC will want to take a look...