Also known as how do you exit an illiquid market without destroying the price...
I don't think so, this is very expensive and time consuming way to sell their position. It would be much cheaper and easier to arrange a series of private deals.
It would not be cheaper. Simply selling that many coins will cause the price to crash, which is bad news for the seller. When you want to make a ton of money out of a multi-million dollar asset that can't easily be liquidated, an IPO is usually the standard "exit strategy", as difficult and time consuming as it may be.