Here's an exert from the SEC filing ;
On October 28, 2008, Washington Mutual, Inc. (the “Company”) received a Nasdaq Staff Determination letter notifying the Company that, in accordance with Marketplace Rules 4300, 4340(b), 4450(f) and IM-4300, the Staff of The NASDAQ Stock Market LLC (the “Staff”) has determined that the Company’s Litigation Tracking Warrants (the “LTWs”) (Nasdaq symbol: DIMEZ) will be delisted from The Nasdaq Stock Market. In its letter, the Staff stated that unless the Company requests an appeal of this determination by November 4, 2008, trading of the LTWs will be suspended at the opening of business on November 6, 2008, and a Form 25-NSE will be filed with the Securities and Exchange Commission, which will remove the Company’s securities from listing and registration on The Nasdaq Stock Market. The Staff stated in its letter that its determination is based on Company’s Chapter 11 bankruptcy filing and associated public interest concerns raised by it and concerns about the value of the Company’s common stock underlying the LTWs. The LTWs were originally distributed by Dime Bancorp, Inc. and, upon a triggering event, become exercisable for the Company’s common stock. The Company does not intend to take any action to appeal the Staff’s determination.