Christiane Ohlgart - 01 Nov 2025 Form 4 Insider Report for Fortinet, Inc. (FTNT)

Role: Chief Financial Officer
Signature: /s/ Robert Turner, by power of attorney
Issuer symbol: FTNT
Transactions as of: 01 Nov 2025
Net transactions value: -$30,604
Form type: 4
Filing time: 04 Nov 2025, 19:38:06 UTC
Previous filing: 21 Aug 2025
Next filing: 03 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ohlgart Christiane	Chief Financial Officer	C/O FORTINET, INC., 909 KIFER ROAD, SUNNYVALE	/s/ Robert Turner, by power of attorney	04 Nov 2025	0002016813

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FTNT	Common Stock	Options Exercise	$0	+685	+11%	$0.000000	7,078	01 Nov 2025	Direct	F1
transaction	FTNT	Common Stock	Tax liability	$21,089	-244	-3.4%	$86.43	6,834	01 Nov 2025	Direct	F2
transaction	FTNT	Common Stock	Sale	$9,515	-110	-1.6%	$86.50	6,724	04 Nov 2025	Direct	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	FTNT	Restricted Stock Units	Options Exercise	$0	-685	-9.1%	$0.000000	6,848	01 Nov 2025	Common Stock	685	$0.000000	Direct	F1, F4, F5, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	Vesting of restricted stock units ("RSUs") previously granted to the Reporting Person.
F2	Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. All of the shares reported as disposed of in this Form 4 were relinquished by the Reporting Person and cancelled by the Issuer in exchange for the Issuer's agreement to pay federal and state tax withholding obligations of the Reporting Person resulting from the vesting of restricted stock units.
F3	The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.
F4	Each RSU represents a contingent right to receive one share of the Issuer's common stock.
F5	25% of the RSUs will vest on May 1, 2025, and the remaining 75% of the RSUs will vest in equal installments on each quarterly anniversary thereafter, until such time as the RSUs are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon settlement.
F6	RSUs do not expire; they either vest or are canceled prior to the vesting date.