About F5

Investor Relations Events Calendar

January 2010
January 20, 2010 Quarter 1, 2010 Financial Release TOPIC: F5 First Quarter Financial Results
DATE: Wednesday, January 20, 2010
TIME: 1:30 p.m. Pacific (4:30 p.m. Eastern)

REPLAY INFORMATION

Replay Via Internet:
http://phx.corporate-ir.net/playerlink.zhtml?c=70919&s=wm&e=2458032
Available until April 21, 2009

Contact: F5 Networks, Inc., Seattle
John Eldridge, 206-272-6571 (Investor Relations)
j.eldridge@f5.com

February 2010
February 23-25, 2010 Goldman Sachs, Technology & Internet Conference 2010 DATE: February 24, 2010
TIME: 10:20 a.m. Pacific
LOCATION: Westin St. Francis Hotel, 335 Powell Street, San Francisco, CA
WEBCAST: http://cc.talkpoint.com/gold006/022310a_mg/?entity=73_U181R7L
Available until March 24, 2010
March 2010
March 1-4, 2010 Morgan Stanley Technology, Media & Telecom Conference DATE: March 1, 2010
TIME: 4:30 p.m., PST
LOCATION: Palace Hotel, 2 New Montgomery Street, San Francisco, CA
WEBCAST: http://www.corporate-ir.net/ireye/confLobby.zhtml?ticker=FFIV&item_id=2750077
March 9-10, 2010 Jefferies 4th Annual Global Technology Conference DATE: March 9, 2010
TIME: 9:30 a.m., EST
LOCATION: Mandarin Oriental Hotel, 80 Columbus Circle at 60th Street, New York, NY
WEBCAST: http://www.wsw.com/webcast/jeff42/ffiv/
Available until April 9, 2010
March 9-10, 2010 Wedbush Morgan 8th Annual NY MAC: Management Access Conference DATE: March 10, 2010
TIME: 10:30 a.m., ET
LOCATION: Le Parker Meridien Hotel, 118 West 57th Street, New York, NY
WEBCAST: http://www.wsw.com/webcast/wedbush12/ffiv/
Available until April 9, 2010
March 11, 2010 Annual Shareholders Meeting DATE: March 11, 2010
TIME: 11:00 a.m. Pacific Time
LOCATION: F5 Networks, 333 Elliott Ave. West, Seattle, WA 98119
PARKING: 401 Elliott Ave. West, Seattle, WA 98119

March 18-20, 2010 Baird’s 2010 Growth Stock Conference DATE: March 18, 2010
TIME: 8:20 a.m. Central
LOCATION: Four Seasons Hotel, 120 East Delaware Place, Chicago, IL
WEBCAST: TBD
April 2010
April 21, 2010 Quarter 2, 2010 Financial Release Unless otherwise indicated, the company will issue a press release announcing results at 1:00p.m. Pacific Time, followed by a conference call with management at 1:30p.m.
June 2010
June 2-3, 2010 Cowen’s 38th Annual Technology Media & Telecom Conference DATE: TBD
TIME: TBD
LOCATION: Palace Hotel, 455 Madison Avenue, New York, NY
WEBCAST: TBD
July 2010
July 21, 2010 Quarter 3, 2010 Financial Release Unless otherwise indicated, the company will issue a press release announcing results at 1:00p.m. Pacific Time, followed by a conference call with management at 1:30p.m.
October 2010
October 27, 2010 Quarter 4, 2010 Financial Release Unless otherwise indicated, the company will issue a press release announcing results at 1:00p.m. Pacific Time, followed by a conference call with management at 1:30p.m.