While you're probably bound by some restricted shareholder agreement, you may get a lot of mileage by just asking a lawyer to ask some questions on your behalf. If this restructuring is going on in the context of some larger time sensitive deal, they may throw something your way to not screw up the timeline. Of course, this all depends on your tolerance for pain.

I have heard that too. By raising an issue you may delay some deals so they may choose to pay you off just to get rid of you. But obviously there are no guarantees and hiring a lawyer may cost money.

Yea, I pinged the acting CEO... but I really should have had a lawyer make the inquiry to the founder & lead investor.

I believe you should be able to write off a loss as cap gains or OID depending on how long after excise you liquidate. Will at least be able to get some back.