F5, INC. — Director's Dealing 2010

Mar 3, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2010-03-01

Reporting Person: CHRISTIANSON JEFFREY A (Sr. VP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-01	Common Stock	M	5000	$0.00	Acquired	41032	Direct
2010-03-03	Common Stock	S	5000	$61.233	Disposed	36032	Direct
2010-03-03	Common Stock	S	5000	$61.234	Disposed	31032	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-01	Restricted Stock Units	$0.00	M	5000	Disposed	2016-12-01	Common Stock (5000)	Direct

Footnotes

F1: Shares received from vesting of the 12/1/2006 Restricted Stock Unit grant.

F2: Sale pursuant to the terms of a 10b5-1 trading plan.