F5, INC. - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2010-04-30

Reporting Person: Matte Dan (Sr. VP of Marketing)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-30	Common Stock	A	558	$38.0715	Acquired	1803	Direct
2010-05-01	Common Stock	M	10905	$0.00	Acquired	12708	Direct
2010-05-03	Common Stock	S	11496	$70.4317	Disposed	1212	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-01	Restricted Stock Units	$0.00	M	4978	Disposed	2018-08-01	Common Stock (4978)	Direct
2010-05-01	Restricted Stock Units	$0.00	M	5927	Disposed	2019-08-03	Common Stock (5927)	Direct

F1: Reporting a purchase of shares acquired under the F5 Networks, Inc. stock purchase plan.

F2: Shares received from vesting of the 8/1/2008 and 8/3/2009 restricted stock unit grants.

F3: Sale pursuant to the terms of a 10b5-1 trading plan.