Reserach in Motion Chairman to Give Keynote at Worldwide Wireless and Wireline Conference

Jim Balsillie, Chairman and Co-CEO at Research In Motion will give a keynote presentation at the Lehman Brother’s Worldwide Wireless and Wireline Conference in New York, NY on Friday, June 3, 2005. The keynote, which is scheduled to begin at approximately 12:30 p.m. Eastern Time, will be available via live audio webcast on RIM’s website and can be accessed by logging on at www.rim.com/investors/events/index.shtml.