Fortinet director Derek T. Kan receives 459 shares

The remaining RSU vesting dates extend through the earlier of June 30, 2027, and the day before Fortinet’s 2027 annual meeting, subject to continued service.

Rhea-AI Filing Summary

Fortinet, Inc. director Derek T. Kan had 459 restricted stock units vest on September 30, 2026, and 459 shares of common stock were delivered. After the transaction, the reported positions were 1,377 RSUs and 459 common shares. The RSUs vest in substantially equal increments on scheduled dates through the earlier of June 30, 2027, and the date immediately preceding Fortinet’s 2027 annual meeting, subject to continued service on each vesting date.

Insider Trade Summary

459 shares exercised/converted

Exercise 2 txns

Insider Kan Derek T.

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F2, F1, F3, F4	459	$0.00	$0.00
Exercise	Common Stock F1	459	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 1,377 contracts (Direct); Common Stock — 459 shares (Direct)

Footnotes (4)

1. F1. Vesting of restricted stock units ("RSUs") granted to the Reporting Person on August 12, 2026.
2. F2. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock upon settlement.
3. F3. The RSUs will vest in substantially equal increments on each of September 30, 2026, December 31, 2026, March 31, 2027, and the earlier of (i) June 30, 2027 and (ii) the date immediately preceding the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's provision of services to the Issuer on each vesting date. Shares of the Issuer's Common Stock will be delivered to the Reporting Person following vesting.
4. F4. RSUs do not expire; they either vest or are canceled prior to vest date.

Key Figures

Restricted stock units vested: 459 RSUs Common shares delivered: 459 shares RSUs following transaction: 1,377 RSUs +1 more

4 metrics

Restricted stock units vested 459 RSUs September 30, 2026

Common shares delivered 459 shares Following vesting on September 30, 2026

RSUs following transaction 1,377 RSUs Reported after the September 30, 2026 transaction

Common shares following transaction 459 shares Reported after the September 30, 2026 transaction

Key Terms

restricted stock units, vest, contingent right

3 terms

restricted stock units financial

"Restricted stock units ("RSUs") granted to the Reporting Person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

vest financial

"will vest in substantially equal increments"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

contingent right financial

"contingent right to receive one share"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many FTNT shares did Derek T. Kan receive from RSUs?

Derek T. Kan received 459 shares of common stock when 459 restricted stock units vested on September 30, 2026.

What is the vesting schedule for Derek T. Kan’s FTNT RSUs?

The RSUs vest in substantially equal increments on September 30, 2026, December 31, 2026, March 31, 2027, and the earlier of June 30, 2027, and the date immediately preceding Fortinet’s 2027 annual meeting. Vesting is subject to Derek T. Kan providing services on each vesting date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/01/2026 - 07:55 PM Accepted by SEC EDGAR 10/01/2026 - 07:55 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Kan Derek T.

(Last) (First) (Middle)

C/O FORTINET, INC.

909 KIFER ROAD

(Street)

SUNNYVALE CALIFORNIA 94086

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Fortinet, Inc. [ FTNT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/30/2026		M(1)		459	A	$0	459	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0(2)	09/30/2026		M(1)			459	(3)	(4)	Common Stock	459	$0	1,377	D

Explanation of Responses:

1. Vesting of restricted stock units ("RSUs") granted to the Reporting Person on August 12, 2026.

2. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock upon settlement.

3. The RSUs will vest in substantially equal increments on each of September 30, 2026, December 31, 2026, March 31, 2027, and the earlier of (i) June 30, 2027 and (ii) the date immediately preceding the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's provision of services to the Issuer on each vesting date. Shares of the Issuer's Common Stock will be delivered to the Reporting Person following vesting.

4. RSUs do not expire; they either vest or are canceled prior to vest date.

	/s/ Robert Turner, by power of attorney	10/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)