I don’t see how this is a defense. If it’s scheduled, he knows it’s happening. He could have just delayed the announcement until the day after his shares were scheduled to sell, and the intention is the same. Having a schedule doesn’t exempt you from insider trading, it’s a procedure that needs to be followed.

On the other hand, the better defense here is that he’s a multi millionaire or billionaire, and he sold like $80k worth of shares. If he was really intending to dump, he’d be selling like 100x this amount.