Holdings was already bankrupt at the time the sale took place, and therefore constituted a breach of fiduciary duty by the Dynegy Holdings board of directors. This allowed the Dynegy Holdings board of directors to sue the Dynegy Inc. board of directors for damages (which could run into the billions of dollars). This threw the Dynegy Holdings bankruptcy filing into doubt, and put Dynegy Inc. on the hook for billions in debt. The bankruptcy court trustee said she would sue on behalf of Dynegy Holdings to recover these debts. The bankruptcy court examiner's finding quickly led to the bankruptcy of Dynegy Inc. itself. On April 3, 2012, Dynegy Inc. announced that it had reached an agreement with the U.S. bankruptcy trustee, the board of directors of Dynegy Holdings, and its other creditors. The agreement, which affected US$2.25 billion in debt, gave all creditors 99 percent of the stock of Dynegy Inc. once it emerged from bankruptcy. Existing shareholders would get just 1 percent of the stock in the new company, with warrants enabling them to buy up to 13.5 of common stock at a set price over the next five years. Accordingly, Dynegy Inc. filed for Chapter 11 bankruptcy protection on July 5, 2012. The bankruptcy plan filed by Dynegy Inc. also called for a merger with Dynegy Holdings. The bankruptcy filing did not, however, affect GasCo, CoalCo, or the "stub group", and allowed the Dynegy Holdings bankruptcy to proceed. Dynegy's stock was delisted from the New York Stock Exchange following the bankruptcy filing. U.S. Bancorp agreed to drop its lawsuit against the company in exchange for a $540 million claim against the company in bankruptcy court. The bondholders represented by U.S. Bancorp would also get a further US$31 million if the Danskammer and Roseton plants are sold. As part of its bankruptcy filing, Dynegy moved its corporate headquarters. In November 2011, the company signed a lease for new principal offices in an office building at 601 Travis Street in Houston. (It occupied these quarters early July 2012.) Dynegy continued to hold leases on several floors of the Wells Fargo Plaza, however. As part of its bankruptcy filing, the bankruptcy court approved a new lease in which Dynegy would abandon of space at Wells Fargo Plaza. The company asked the court to cancel its lease on the remaining as well. Dynegy said it hoped to hold a vote on August