F5, INC. — Director's Dealing 2016

May 3, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2016-04-29

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-04-29	Common Stock	A	5605	$0.00	Acquired	20011	Direct
2016-05-01	Common Stock	M	11158	$0.00	Acquired	31169	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-05-01	Restricted Stock Units	$0.00	M	2580	Disposed		Common Stock (2580)	Direct
2016-05-01	Restricted Stock Units	$0.00	M	2684	Disposed		Common Stock (2684)	Direct
2016-05-01	Restricted Stock Units	$0.00	M	1905	Disposed		Common Stock (1905)	Direct
2016-05-01	Restricted Stock Units	$0.00	M	3989	Disposed		Common Stock (3989)	Direct

Footnotes

F1: Shares acquired based on performance targets for the February 1, 2016 award of Restricted Stock Units.

F2: Shares acquired upon vesting of the November 1, 2012, November 1, 2013, November 3, 2014, and February 1, 2016 awards of service-based Restricted Stock Units.

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: 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.

F8: The February 1, 2016 award of service-based Restricted Stock Units vests in four equal quarterly increments beginning May 1, 2016.