F5, INC. — Director's Dealing 2015

May 5, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2015-05-01

Reporting Person: MCADAM JOHN (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-01	Common Stock	M	7169	$0.00	Acquired	111718	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-01	Restricted Stock Units	$0.00	M	2579	Disposed		Common Stock (2579)	Direct
2015-05-01	Restricted Stock Units	$0.00	M	2684	Disposed		Common Stock (2684)	Direct
2015-05-01	Restricted Stock Units	$0.00	M	1906	Disposed		Common Stock (1906)	Direct

Footnotes

F1: Shares acquired upon vesting of the November 1, 2012, November 1, 2013, and November 3, 2014 awards of service-based Restricted Stock Units.

F2: Includes 201 shares acquired on April 30, 2015 under the F5 Networks, Inc. stock purchase plan.

F3: Each Restricted Stock Unit represents a contingent right to receive one share of F5 Networks, Inc. Common Stock on the vest date.

F4: The November 1, 2012 award of service-based Restricted Stock Units vests in sixteen equal quarterly increments beginning February 1, 2013.

F5: If the reporting person continues to serve as an officer of the Company on the vest date, the corresponding number of shares of Common Stock of F5 Networks, Inc. will be issued to the reporting person on the vest date.

F6: The November 1, 2013 award of service-based Restricted Stock Units vests in sixteen equal quarterly increments beginning February 1, 2014.

F7: The November 3, 2014 award of service-based Restricted Stock Units vests in sixteen equal quarterly increments beginning February 1, 2015.