[Form 4] Fortinet, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Kenneth A. Goldman, a director of Fortinet, Inc. (FTNT), reported the vesting and receipt of 649 restricted stock units that settled into 649 shares on 09/30/2025. After the reported transaction he beneficially owns 21,521 shares directly. He also reports indirect holdings of 20,750 shares through the Goldman-Valeriote Family Trust u/a/d 11/15/95 and 1,000 shares through GV Partners L.P.. The RSUs were granted on 08/20/2025 and the remaining RSUs vest in substantially equal increments on 12/31/2025, 03/31/2026, and the earlier of 06/30/2026 or the date before Fortinet's 2026 annual meeting, subject to continued service. Each RSU converts to one share on settlement and RSUs do not expire.

Positive

• 649 RSUs vested and settled into 649 shares on 09/30/2025
• Reporting Person retains 21,521 shares directly after the transaction
• Clear vesting timetable for remaining RSUs with specific dates through 06/30/2026

Negative

• None.

Insights

Corporate Governance Expert

Director received 649 RSUs that settled into shares; ongoing vesting schedule remains.

Kenneth A. Goldman reported settlement of 649 RSUs on 09/30/2025, increasing his direct holdings to 21,521 shares.

The filing discloses indirect holdings of 20,750 shares via a family trust and 1,000 shares via GV Partners L.P., with a disclaimer of beneficial ownership regarding the trust except for pecuniary interest.

The RSU grant date is 08/20/2025 and remaining RSUs vest in equal increments on 12/31/2025, 03/31/2026, and the earlier of 06/30/2026 or the day before the 2026 annual meeting, conditional on service.

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

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

1. Name and Address of Reporting Person^*

GOLDMAN KENNETH A

(Last) (First) (Middle)

C/O FORTINET, INC.

909 KIFER ROAD

(Street)

SUNNYVALE CA 94086

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

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

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

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

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	09/30/2025		M(1)		649	A	$0	21,521	D
Common Stock								20,750	I	By Goldman-Valeriote Family Trust u/a/d 11/15/95(2)
Common Stock								1,000	I	By GV Partners L.P.(3)

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(4)	09/30/2025		M(1)			649	(5)	(6)	Common Stock	649	$0	1,948	D

Explanation of Responses:

1. Vesting of restricted stock units ("RSUs") granted to the Reporting Person on August 20, 2025.

2. The Reporting Person is a trustee of the Trust and may be deemed to have voting and dispositive power with regard to the shares held by the Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his pecuniary interest therein.

3. GV Partners L.P. is a family limited partnership of which the Reporting Person is the managing member.

4. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement.

5. The RSUs will vest in substantially equal increments on each of September 30, 2025, December 31, 2025, March 31, 2026, and the earlier of (i) June 30, 2026 and (ii) the date immediately preceding the Issuer's 2026 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.

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

	/s/ Robert Turner, by power of attorney	10/02/2025
	** 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.

FAQ

What did Kenneth A. Goldman report on Form 4 for FTNT?

He reported the vesting and settlement of 649 RSUs into 649 shares on 09/30/2025 and his resulting ownership positions.

How many shares does Kenneth A. Goldman beneficially own after the transaction?

The filing shows 21,521 shares beneficially owned directly following the reported transaction.

Does Kenneth A. Goldman have indirect holdings in FTNT?

Yes. The filing lists 20,750 shares via the Goldman-Valeriote Family Trust u/a/d 11/15/95 and 1,000 shares via GV Partners L.P.

When were the RSUs originally granted and what is the vesting schedule?

The RSUs were granted on 08/20/2025. Remaining RSUs vest in substantially equal increments on 12/31/2025, 03/31/2026, and the earlier of 06/30/2026 or the date immediately before Fortinet's 2026 annual meeting, subject to continued service.

Do the RSUs expire?

No. The filing states that the RSUs do not expire; they either vest or are canceled prior to the vest date.