Research In Motion Announces Effective 3-for-1 Stock Split WATERLOO, ONTARIO, Jun 28, 2007 (CCNMatthews via COMTEX) -- (CCN Mathews) Research In Motion Limited (RIM) (NASDAQ:RIMM)(TSX:RIM), a world leader in the mobile communications market, announced that its Board of Directors today approved a 3-for-1 stock split of the company's outstanding common shares. The 3-for-1 stock split will be implemented by way of a stock dividend whereby shareholders will receive two common shares of the company for each common share held. The stock dividend will be payable on August 20, 2007 to common shareholders of record at the close of business on August 17, 2007. The total number of common shares outstanding as of June 28, 2007 was 186 million. Adjusting for the stock split, the total number of common shares outstanding will be 558 million. Shareholders should retain their existing share certificates and not return their share certificates to the company's transfer agent. Share certificates representing the stock dividend will be mailed out on or about August 20, 2007 to registered shareholders as of the record date. Non-registered shareholders' brokerage accounts with be credited for the additional shares representing the stock dividend on or about the payment date. RIM is ascribing essentially no monetary value to the stock dividend. Accordingly, there will be no tax payable by Canadian or U.S. shareholders as a result of the dividend. Shareholders are advised to contact their tax advisors for further information. RIM's common shares are expected to begin trading on a post-stock dividend basis on the Toronto Stock Exchange on August 15, 2007 and on Nasdaq on August 21, 2007. Further details and answers to shareholder questions relating to the stock split will be available on RIM's website at http://www.rim.com/investors/faqs/index.shtml. About Research In Motion (RIM) Research In Motion is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers to enhance their products and services with wireless connectivity. RIM's portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry(R) wireless platform, the RIM Wireless Handheld(TM) product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (NASDAQ:RIMM) and the Toronto Stock Exchange (TSX:RIM). For more information, visit www.rim.com or www.blackberry.com. The BlackBerry and RIM families of related marks, images and symbols are the exclusive properties and trademarks of Research In Motion Limited. RIM, Research In Motion and BlackBerry are registered with the U.S. Patent and Trademark Office and may be pending or registered in other countries. All other brands, product names, company names, trademarks and service marks are the properties of their respective owners. SOURCE: Research In Motion Investor Contact: RIM Investor Relations (519) 888-7465 Email: investor_relations@rim.com Copyright (C) 2007 CCNMatthews. All rights reserved.