Exhibit 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, William Richter, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of Isilon Systems, Inc. for the three and nine months ended September 30, 2009 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Isilon Systems, Inc.
| Dated: October 23, 2009 | By: | | /s/ WILLIAM RICHTER |
| | Name: | | William Richter |
| | Title: | | Vice President of Finance and Chief Financial Officer |
| | | | (Principal Accounting and Financial Officer) |
A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to Isilon Systems, Inc. and will be retained by Isilon Systems, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.
This certification accompanies this Report on Form 10-Q pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by Isilon Systems, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that Isilon Systems, Inc. specifically incorporates it by reference.
