American Stock Exchange to Trade Options on Four Additional Securities

American Stock Exchange to Trade Options on Four Additional Securities NEW YORK, May 5 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) will launch trading in options on Thursday, May 6, 2004 on the following Nasdaq Stock Market and New York Stock Exchange listed stocks of: * Curis, Inc. (Option Symbol: UUX/Stock Symbol: CRIS) * SigmaTel Incorporated (Option Symbol: UGO/Stock Symbol: SGTL) * Tsakos Energy Navigation Ltd. (Symbol: TNP) * Washington Group International, Inc. (Option Symbol: QUG/Stock Symbol: WGII) Curis, Inc. options will open with strike prices of 2-1/2 - 5 - 7-1/2 and position limits of 3,150,000 shares. The options will trade on the March expiration cycle with initial expirations in May, June, September, and December. The Specialist will be Highland Securities Corp. Curis, Inc. develops therapeutics for the regeneration and restoration of human tissues and organs. SigmaTel Incorporated options will open with strike prices of 22-1/2 - 25 - 30 and position limits of 2,250, 000 shares. The options will trade on the March expiration cycle with initial expirations in May, June, September, and December. The Specialist will be Bowery Specialist Group, LLC. SigmaTel Incorporated designs, develops and markets proprietary mixed-signal integrated circuits, used in a variety of consumer electronics and computing products such as DVD players and personal computers. Tsakos Energy Navigation Ltd. options will open with strike prices of 22-1/2 - 25 - 30 and position limits of 2,250, 000 shares. The options will trade on the March expiration cycle with initial expirations in May, June, September, and December. The Specialist will be Bowery Specialist Group, LLC. Tsakos Energy Navigation Ltd. owns and operates a fleet of tankers suitable for transporting crude oil, refined petroleum products and other liquids. Washington Group International, Inc. options will open with strike prices of 30 - 35 - 40 and position limits of 2,250,000 shares. The options will trade on the March expiration cycle with initial expirations in May, June, September, and December. The Specialist will be LaBranche Structured Products, LLC. Washington Group International, Inc. provides design, engineering, construction management, facilities and operations management, environmental remediation and mining services. The American Stock Exchange(R) (Amex(R)) is the only primary exchange that offers trading across a full range of equities, options and exchange traded funds (ETFs), including structured products and HOLDRS(SM). In addition to its role as a national equities market, the Amex is the pioneer of the ETF, responsible for bringing the first domestic product to market in 1993. Leading the industry in ETF listings, the Amex lists 138 ETFs to date. The Amex is also one of the largest options exchanges in the U.S., trading options on broad-based and sector indexes as well as domestic and foreign stocks. DATASOURCE: American Stock Exchange CONTACT: Media - Lynn Duffy of the American Stock Exchange, +1-212-306-1654, Web site: http://www.amex.com/