So what law are they actually asserting that Musk broke? That a CEO is incentivized to act in the interest of the company's shareholders? Honest question, what specific laws come into play here - is it about stock manipulation?
Also, can what happened be legally considered as a "loss" if an investor never cashed out? AFAIK, that would make it an unrealized loss, analogous to unrealized gains which typically don't officially result in any net change until the asset is sold.