This excerpt taken from the TPTX DEF 14A filed Jun 19, 2009.
Final Record Date
The final record date will be the date upon which we file the Certificate of Dissolution with the Delaware Secretary of State. We intend to close our stock transfer books and discontinue recording transfers of shares of our common stock on the final record date, and thereafter certificates representing shares of our common stock will not be assignable or transferable on our books except by will, intestate succession or operation of law. After the final record date, we will not issue any new stock certificates, other than replacement certificates. It is anticipated that no further trading of our shares will occur on or after the final record date. See Description of the Plan of Dissolution and Dissolution ProcessListing and Trading of the Common Stock and Interests in the Liquidating Trust or Trusts.
All liquidating distributions from us or a liquidating trust on or after the final record date, if any, will be made to stockholders according to their holdings of common stock as of the final record date. Subsequent to the final record date, we may at our election require stockholders to surrender certificates representing their shares of common stock in order to receive subsequent distributions. Stockholders should not forward their stock certificates before receiving instructions to do so. If surrender of stock certificates should be required, all distributions otherwise payable by us or the liquidating trust, if any, to stockholders who have not surrendered their stock certificates may be held in trust for such stockholders, without interest, until the surrender of their certificates (subject to escheat pursuant to the laws relating to unclaimed property). If a stockholders certificate evidencing the common stock has been lost, stolen or destroyed, the stockholder may be required to furnish us with satisfactory evidence of the loss, theft or destruction thereof, together with a surety bond or other indemnity, as a condition to the receipt of any distribution.