Dont forget there was an illegal major dump via Cor's clients years ago. Those shares could have been borrowed against or naked shorted where the balance of shares got much worse. The shares currently held at DTCC could have been a negotiation to be held until the coming corporate action executes.
Or it actually is going private (per 2015 PR) and the buyer was waiting all this time for legal issues to resolve.
This is highly probable! I can sum this up in 1 word.
"Duress"
CRGP was hijacked by 3rd party institutions and does not want anything to do with the public market because there is nothing protecting the company or its shareholders. Going private ensures stronger protections on its valuation and operations.