Fortinet director Judith Sim acquires 459 shares

Fortinet, Inc. director Judith Sim reported vesting of 459 restricted stock units on September 30, 2026, and acquisition of 459 common shares upon settlement.

Rhea-AI Filing Summary

Fortinet, Inc. director Judith Sim reported vesting of 459 restricted stock units on September 30, 2026, and acquisition of 459 common shares upon settlement. After the transactions, she directly held 130,001 common shares and 1,377 restricted stock units. The RSUs are scheduled to vest in substantially equal increments on December 31, 2026, March 31, 2027, and the earlier of June 30, 2027, and the date immediately preceding Fortinet's 2027 annual meeting, subject to her providing services to Fortinet on each vesting date.

Insider Trade Summary

459 shares exercised/converted

Exercise 2 txns

Insider Sim Judith

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 — 130,001 shares (Direct)

Footnotes (4)

1. F1. Vesting of restricted stock units ("RSUs") granted to the Reporting Person on August 12, 2026.
2. F2. Each 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 units Common shares acquired: 459 shares Common shares held following transaction: 130,001 shares +1 more

4 metrics

Restricted stock units vested 459 units September 30, 2026

Common shares acquired 459 shares Upon settlement of the vested RSUs

Common shares held following transaction 130,001 shares Direct holdings

Restricted stock units following transaction 1,377 units Direct holdings

Key Terms

Restricted Stock Units (RSUs), contingent right, substantially equal increments

3 terms

Restricted Stock Units (RSUs) financial

"Vesting of restricted stock units ("RSUs")"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

contingent right financial

"Each RSU represents a contingent right to receive one share"

substantially equal increments financial

"will vest in substantially equal increments"

FAQ

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

When are Judith Sim's FTNT RSUs scheduled to vest?

The RSUs are scheduled to vest in substantially equal increments on December 31, 2026, March 31, 2027, and the earlier of June 30, 2027, and the date immediately preceding Fortinet's 2027 annual meeting, subject to Judith Sim providing services to Fortinet on each vesting date.

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

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Available on EDGAR 10/01/2026 - 07:17 PM Accepted by SEC EDGAR 10/01/2026 - 07:17 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^*

Sim Judith

(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	130,001	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 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)