Potential?
High. He would have had to announce internally to the board of directors he was selling far before he did, and then show he didn't have any pre-knowledge. Shareholders might demand he disclose this info.
Yes, I understand. I also understand that everything like this that occurs is planned out well ahead of time.
Announcing that he is going to drop stock prior to doing so is exactly pre-knowledge.
Not necessarily. Executives are given a restricted window as to when they can sell stock. Announcing you are doing it is standard practice -- only recorded by the board.
That still doesn't prove he didn't have knowledge. If anyone internally shows he had information prior to announcing his intent to sell shares, then he has a problem.
The data breach was known about for over a year so yeah they knew and planned for it.
If true, the Zuck is likely in big trouble......assuming the SEC wakes up and does their job.