F5, INC. — Director's Dealing 2017

May 3, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: F5 NETWORKS INC (FFIV)
CIK: 0001048695
Period of Report: 2017-05-01

Reporting Person: Reinland Andrew (EVP, Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-01	Common Stock	S	2399	$127.7285	Disposed	18602	Direct
2017-05-01	Common Stock	S	100	$128.765	Disposed	18502	Direct
2017-05-02	Common Stock	S	1052	$126.8389	Disposed	17450	Direct
2017-05-02	Common Stock	S	2684	$127.2862	Disposed	14766	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-01	Restricted Stock Units	$0.00	A	7850	Acquired		Common Stock (7850)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	918	Indirect

Footnotes

F1: This transaction was executed pursuant to a Rule 10b5-1 trading plan, in multiple trades at prices ranging from $127.29 to $128.19. The reported price is the weighted average sale price. The reporting person undertakes to provide to the Company, any security holder of the Company, or Securities and Exchange Commission staff, upon request, complete information regarding the number of shares sold at each separate price.

F2: This transaction was executed pursuant to a Rule 10b5-1 trading plan.

F3: This transaction was executed pursuant to a Rule 10b5-1 trading plan, in multiple trades at prices ranging from $126.04 to $126.99. The reported price is the weighted average sale price. The reporting person undertakes to provide to the Company, any security holder of the Company, or Securities and Exchange Commission staff, upon request, complete information regarding the number of shares sold at each separate price.

F4: This transaction was executed pursuant to a Rule 10b5-1 trading plan, in multiple trades at prices ranging from $127.05 to $127.55. The reported price is the weighted average sale price. The reporting person undertakes to provide to the Company, any security holder of the Company, or Securities and Exchange Commission staff, upon request, complete information regarding the number of shares sold at each separate price.

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

F6: This May 1, 2017 award of service-based Restricted Stock Units vests 100% on May 1, 2018.

F7: 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.