John Whittle - 01 May 2026 Form 4 Insider Report for Fortinet, Inc. (FTNT)

Reporting relationship: CHIEF OPERATING OFFICER
Issuer ticker: FTNT
Reported as of: 01 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 05 May 2026, 17:30:17 UTC
Prior SEC filing: 23 Feb 2026
Next SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert Turner, by power of attorney

Key filing fact

John Whittle filed Form 4 for Fortinet, Inc. (FTNT) on 05 May 2026.

Key facts

This page summarizes John Whittle's Form 4 filing for Fortinet, Inc. (FTNT).
7 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 05 May 2026, 17:30.

Change

Previous filing in this sequence was filed on 23 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001476336 Primary reporting owner

Whittle John

Relationship: CHIEF OPERATING OFFICER
Address: C/O FORTINET, INC., 909 KIFER ROAD, SUNNYVALE
Signature: /s/ Robert Turner, by power of attorney
Signature date: 05 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FTNT transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,608
Change %: +1.7%
Price: $0.000000^*
Shares after: 94,069
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

FTNT transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,827
Change %: +1.9%
Price: $0.000000^*
Shares after: 95,896
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

FTNT transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,137
Change %: +1.2%
Price: $0.000000^*
Shares after: 97,033
Date: 01 May 2026
Ownership: Direct
Footnotes: F1

FTNT transaction

Common Stock

Tax liability

Transaction value
Shares: -2,309
Change %: -2.4%
Price: $86.29^*
Shares after: 94,724
Date: 01 May 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FTNT transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,608
Change %: -25%
Price: $0.000000^*
Shares after: 4,825
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,608
Exercise price: $0.000000
Footnotes: F1, F3, F4, F5

FTNT transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,827
Change %: -13%
Price: $0.000000^*
Shares after: 12,788
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,827
Exercise price: $0.000000
Footnotes: F1, F3, F5, F6

FTNT transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,137
Change %: -8.3%
Price: $0.000000^*
Shares after: 12,515
Date: 01 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,137
Exercise price: $0.000000
Footnotes: F1, F3, F5, F7

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Vesting of restricted stock units ("RSUs") previously granted to the Reporting Person.

Footnote 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 RSUs.

Footnote F3

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

Footnote F4

25% of the RSUs vested on February 1, 2024, 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.

Footnote F5

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

Footnote F6

25% of the RSUs vested on February 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.

Footnote F7

25% of the RSUs vested on February 1, 2026, 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.