There is another idea worth think about.
If funds were really stolen it is quite hard to replace them quick. What about coinex refund people who will agree to such deal in coinex shares? Fix security issues as fast as possible, with not damaging quality and run site again. Let shareholders get dividends right from start. It may look like forced sale but some people may appreciate to at least having this instead of waiting months to get funds back.
Also we need a little transparency - we need to know what was stolen. Only btc or any other coins too?