CORPORATE EVENT: Research In Motion (RIMM) 3 for 1 Stock Split 8/21/07

Clearing House Advisory Notices

To	Clearing Member Firms
From	Clearing House Department
Subject	CORPORATE EVENT: Research in Motion Ltd (RIMM) 3 for 1 Stock Split 8/21/07
Notice Date	2007-08-20
Notice Number	07-193
Effective Date	2007-08-21
Research in Motion Ltd (RIMM) has announced a 3-for-1 common stock split. The ex-distribution date for the stock split is Tuesday, August 21, 2007. Opening positions and start-of-day prices for August 21st will be based on final positions and settlement prices from Monday, August 20, 2007. This corporate action will be coordinated with the Options Clearing Corporation. For the full text of this advisory . . .