Ultra Petroleum Corp. Announces Second Quarter 2008 Results Conference Call

In conjunction with Ultra Petroleum Corp.’s Second Quarter 2008 results release, you are invited to listen to its conference call that will be broadcast live over the internet on Wednesday, August 6, 2008 at 11:00 a.m. Eastern Daylight Time. Ultra Petroleum Corp. announces the following webcast:

What: Ultra Petroleum Corp. Webcast
When: August 6, 2008 @ 11 a.m. Eastern
Where: http://www.ultrapetroleum.com
How: Live over the Internet — Simply log on to the web at the address
above.

Contact: Kelly L. Whitley, Manager Investor Relations at 281-876-0120 x
302

If you are unable to participate during the live webcast, the call will be archived on the Web site http://www.ultrapetroleum.com.

Ultra Petroleum Corp. is an independent exploration and production company focused on developing its long-life natural gas reserves in the Green River Basin of Wyoming — the Pinedale and Jonah Fields. Ultra is listed on the New York Stock Exchange and trades under the ticker symbol “UPL”. The company had 153,632,161 shares as of June 30, 2008. Additional information can be found on the company on the Internet at http://www.ultrapetroleum.com.