In this situation everything seems to have worked correctly.
If you think the stock price should be lower take it up with your elected representatives and see what happens when regulations are put in place.
Yes, the evidence was clear in the case of the CIO, and everything worked as it should in the case of that one person. But as craigc noted, three other executives managed to sell shares before the price drop, so there's a question of how likely those three were to have known about the situation but by chance happened to have no clear evidence against them. That leads to the question of what can be done to more effectively prevent executives from engaging in insider trading in situations where they are aware that the evidence will be too scant to prosecute. One solution proposed was to zero the transactions of stock sales by executives that occurred shortly before an event like this. Saying "the stock price will take care of it" makes no sense in this context.
If you wanted to advocate stronger reporting requirements for what executives knew and when then I'd be more comfortable.
Personally, I think the solution is to not allow executives to sell stock without publishing a schedule in which the first sale is more than 9 months from the date of the announced schedule.
Edit: I used to work in the legal industry nearly exclusively in civil court.
So hamstringing the SEC with an arbitrarily high standard just facilitates continued insider trading.
Agreed on the full burden of proof for penalties. But having your gains clawed back is a different fish entirely.
Aware he said "convict" but he probably meant "charge".
If the government can't prove its case, it probably shouldn't be getting to a jury either.