I'm not sure this company would care if the stock was delisted. It appears to me that it is being run as an LLC with no interest in the shareholders whatsoever. If this company is profitable now, the insider(s) will gain more than the shareholders if the company gets delisted, in my opinion.
But how would FINRA stepping in and doing something like this help shareholders that have purchased stock in a company? Can FINRA go in and shutter the business? Would they sell it off in which to pay current shareholders from any possible assets?