Ultra Petroleum to List on the NYSE

Ultra Petroleum Corp. (Amex: UPL) filed an application to list its common stock on the New York Stock Exchange under the symbol "UPL". Pending approval of the application, it is expected that the first day of trading on the New York Stock Exchange will be August 3, 2007. The last day of trading of Ultra Petroleum's common stock on AMEX is expected to be August 2, 2007. "We believe the move will benefit our shareholders through increased visibility and decreased volatility," stated Michael D. Watford, Chairman, President and Chief Executive Officer. "We join the ranks of many other mid and large-cap oil and gas companies currently trading on the NYSE with this move. We have had a successful history with our specialists and the American Stock Exchange and are looking forward to our new relationship with the NYSE." About Ultra Petroleum Ultra Petroleum is an independent, exploration and production company focused on its core properties in the Green River Basin of southwestern Wyoming: the Pinedale and Jonah Fields. The company produces oil in the shallow waters of Bohai Bay, China and is in the early exploration stages in the Appalachian Basin in Pennsylvania. Ultra Petroleum is listed on the American Stock Exchange under the symbol "UPL" with 152,167,702 shares outstanding as of June 30, 2007.