… Robbins Umeda

Robbins Umeda LLP has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by members of the Board of Directors of Isilon Systems, Inc. in connection with their efforts to sell Isilon to EMC Corporation. If the transaction is completed, Isilon shareholders will receive $33.85 in cash for each share of Isilon common stock they hold. The transaction is expected to be completed late this year.

Robbins Umeda LLP’s investigation concerns whether Isilon’s Board undertook a fair process to obtain fair consideration for all shareholders of Isilon. Specifically, our investigation concerns whether members of the Company’s Board breached their fiduciary duties to Isilon shareholders by failing to adequately shop the Company before entering into the transaction with EMC.