Isilon Systems, Inc.

Keller Rohrback L.L.P. acted as liaison counsel in a securities fraud case filed in the United States District Court for the Western District of Washington, on behalf of individual shareholders who purchased Isilon Systems, Inc. stock. The complaint filed on December 12, 2007, alleges that Isilon Systems, Inc., and several of its officers and directors violated federal securities laws when the Registration Statement and the Prospectus associated with the Isilon Systems initial public offering (“IPO”) in December 2006, failed to disclose the deceptive business practices that the company was engaging in, which lead to an artificially high IPO sale. The stock continued to trade at artificially high prices as certain officers of the company continued to issue materially false statements during the class period of December 14, 2006 and October 3, 2007.

Defendants filed several motions to dismiss the complaint against them, which were denied in part and granted in part, by Judge Marsha J. Pechman, on December 29, 2008.

On November 2, 2009, the Court preliminarily approved a settlement that would provide $15 million for the benefit of the class and defined the class as follows:

“All persons or entities who purchased or otherwise acquired shares of the Isilon Systems, Inc. common stock between December 14, 2006 and November 8, 2007, inclusive, including all persons or entities who acquired shares of Isilon common stock pursuant and/or traceable to Isilon’s December 2006 Initial Public Offering, and who were damaged thereby.”

On March 5, 2010, the Court granted Plaintiffs’ Motion for Final Approval of Class Action Settlement and Plan of Allocation and Plaintiffs’ Motion for an Award of Attorneys’ Fees and Expenses.

Additional information regarding the Settlement is available at http://www.isilonclassaction.com/