F5, INC. — Director's Dealing 2010

Feb 2, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2010-02-01

Reporting Person: EAMES EDWARD JULIAN (Sr. VP Business Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-01	Common Stock	M	10131	$0.00	Acquired	10131	Direct
2010-02-01	Common Stock	S	10131	$49.9157	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-01	Restricted Stock Units	$0.00	M	4625	Disposed	2018-08-01	Common Stock (4625)	Direct
2010-02-01	Restriced Stock Units	$0.00	M	5506	Disposed	2019-08-03	Common Stock (5506)	Direct

Footnotes

F1: Shares received from vesting of the 8/1/2008 and 8/3/2009 restricted stock unit grants.

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