Fortinet, Inc. — Director's Dealing 2020

May 21, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Fortinet, Inc. (FTNT)
CIK: 0001262039
Period of Report: 2020-05-20

Reporting Person: Whittle John (VP Corp Dev&Strat Alliance,GC)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-05-20	Common Stock	M	625	$37.24	Acquired	1894	Direct
2020-05-20	Common Stock	M	1215	$49.06	Acquired	3109	Direct
2020-05-20	Common Stock	S	300	$144.6767	Disposed	2809	Direct
2020-05-20	Common Stock	S	740	$146.0191	Disposed	2069	Direct
2020-05-20	Common Stock	S	600	$147.3917	Disposed	1469	Direct
2020-05-20	Common Stock	S	200	$148.99	Disposed	1269	Direct
2020-05-21	Common Stock	M	700	$84.49	Acquired	1969	Direct
2020-05-21	Common Stock	S	700	$144.83	Disposed	1269	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-20	Stock Option (right to buy)	$37.24	M	625	Disposed	2024-02-16	Common Stock (625)	Direct
2020-05-20	Stock Option (right to buy)	$49.06	M	1215	Disposed	2025-02-20	Common Stock (1215)	Direct
2020-05-21	Stock Option (right to buy)	$84.49	M	700	Disposed	2026-02-21	Common Stock (700)	Direct

Footnotes

F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2: Represents the weighted average sale price. The lowest price at which shares were sold was $144.47 and the highest price at which shares were sold was $145.08. The reporting person undertakes to provide upon request to the staff of the Securities Exchange Commission, the issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4) and (5) to this Form 4.

F3: Represents the weighted average sale price. The lowest price at which shares were sold was $145.56 and the highest price at which shares were sold was $146.48.

F4: Represents the weighted average sale price. The lowest price at which shares were sold was $146.81 and the highest price at which shares were sold was $147.78.

F5: Represents the weighted average sale price. The lowest price at which shares were sold was $148.50 and the highest price at which shares were sold was $149.48.

F6: 1/4 of the shares subject to the option vested on February 16, 2018 and 1/48 of the shares subject to the option will vest monthly thereafter, subject to the Reporting Person's provision of service to the issuer on each vesting date.

F7: 1/4 of the shares subject to the option vested on February 20, 2019 and 1/48 of the shares subject to the option will vest monthly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.

F8: 1/4 of the shares subject to the option vested on February 21, 2020 and 1/48 of the shares subject to the option will vest monthly thereafter, subject to the Reporting Person's provision of service to the Issuer on each vesting date.