Exhibit 99.1

FORM 3
JOINT FILER INFORMATION



Name of "Reporting Persons":	Norwest Venture Partners VIII, LP
					Norwest Venture Partners IX, LP
					Promod Haque
					Matthew Howard
					Jeffrey Crowe

Address:				525 University Avenue, Suite 800
					Palo Alto, CA  94301

Designated Filer:			Promod Haque

Issuer and Ticker Symbol:		FireEye, Inc. (FEYE)

Date of Earliest Transaction:		September 19, 2013



Each of the following is a Joint Filer with Promod Haque and may be deemed to share indirect beneficial ownership in the securities set forth on the attached Form 3:

Norwest Venture Partners VIII, LP ("NVP VIII") is the record holder of the shares reported in Lines 1 through 6 of Table 2. Norwest Venture Partners IX, LP ("NVP IX") is the record holder of the shares reported on Lines 7 through 12 of Table 2. Promod Haque, Matthew Howard, and Jeffrey Crowe are Co-Chief Executive Officers of NVP Associates, LLC ("NVP Associates"), the managing member of the general partners of NVP VIII and NVP IX. By virtue of such position, Mssrs. Haque, Howard and Crowe may be deemed to beneficially own the shares held of record by NVP VIII and NVP IX.

All Reporting Persons disclaim beneficial ownership of shares of FireEye, Inc. stock held by each other Reporting Person, except to the extent of their respective pecuniary interest therein. The filing of this statement shall not be deemed an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934, or otherwise, any of the Reporting Persons are the beneficial owners of all of the equity securities covered by this statement.

Each of the Reporting Persons listed above hereby designates Promod Haque as its designated filer of Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder.



						NORWEST VENTURE PARTNERS VIII, LP
						By: 	Itasca VC Partners VIII, LLP
							Its General Partner
						By: 	NVP Associates, LLC
							Its Managing Member


						By:  /s/ Kurt L. Betcher
						Its Chief Financial Officer


						NORWEST VENTURE PARTNERS IX, LP
						By: 	Genesis VC Partners IX, LLC
							Its General Partner
      By: 	NVP Associates, LLC
							Its Managing Member


						By:  /s/ Kurt L. Betcher
						Its Chief Financial Officer




						By:  /s/ Kurt L. Betcher
PROMOD HAQUE
By: Kurt L. Betcher, as Attorney-in-Fact


						By:  /s/ Kurt L. Betcher
                                    MATTHEW HOWARD
                                    By: Kurt L. Betcher, as Attorney-in-Fact


						By:  /s/ Kurt L. Betcher
                                    JEFFREY CROWE
                                    By: Kurt L. Betcher, as Attorney-in-Fact