There are some protections for the shareholders. I

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Going private transactions require shareholders to make difficult decisions. To protect shareholders, some states have adopted corporate takeover statutes that provide shareholders with dissenter's rights. These statutes provide shareholders the opportunity to sell their shares on the terms offered, to challenge the transaction in court, or to hold on to the shares. Once the transaction is concluded, remaining shareholders may find it very difficult to sell their retained shares because of a limited trading market.

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