He may be restricted from selling for 6 months. But there may be insurers willing to provide a 454 million bond if he puts a portion or all of the stock in escrow with them until the appeal is completed. The stock might decline in price but when the initial objective stock market valuation is 7 times more than the face amount of the bond, insurers would be more prone to consider issuance of the bond.
Trump should let her take Trump Tower and rebuild it in FL or TX