It wouldn't be what I would do, but then again I'm a former lawyer with many friends who are lawyers. But if the best OP can do is get some preliminary advice from Hacker News, it's worth giving it a shot.
What would you suggest OP do instead of asking HN?
If I were a former lawyer, I wouldn't give any advice other than general knowledge.
e.g.
"Could you sue on behalf of the shareholders of your CEO's embezzlement and win? Maybe? Should you? I don't know, I'm not your attorney, and I haven't studied any of your claims."