TOPIC:                     F5 First Quarter Financial Results

DATE:                      Wednesday, January 23, 2013

TIME:                      1:30 p.m. Pacific (4:30 p.m. Eastern)

DIAL IN NUMBER:    800-857-3834 (US & Canada),  +1-210-839-8222 (International)

CALL LEADER:         John McAdam

PASSCODE:             F5 NETWORKS


Please call in 10 minutes ahead of time to ensure a proper connection. We look forward to having you join us. If you have any questions, please call F5 NETWORKS, INC. (206) 272-5555.

REPLAY INFORMATION

Replay Via Phone:  Available January 23, 2013 (from 4:30 p.m. Pacific) through January 24, 2013 (until 11:59 p.m. Pacific)

Phone: 800-695-3640 (US & Canada),   +1-402-220-0318 (International)              

Replay Via Internet:  http://www.f5.com/about/investor-relations/events-calendar.html

Available until April 24, 2013

F5 and F5 Networks are trademarks or service marks of F5 Networks, Inc., in the U.S. and other countries. All other product and company names herein may be trademarks of their respective owners.

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This press release may contain forward looking statements relating to future events or future financial performance that involve risks and uncertainties. Such statements can be identified by terminology such as "may," "will," "should," "expects," "plans," "anticipates," "believes," "estimates," "predicts," "potential," or "continue," or the negative of such terms or comparable terms. These statements are only predictions and actual results could differ materially from those anticipated in these statements based upon a number of factors including those identified in the company's filings with the SEC.

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