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Fortinet (FTNT) COO John Whittle reports RSU vesting and tax share withholding

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Fortinet, Inc. chief operating officer John Whittle reported routine equity compensation activity tied to vesting restricted stock units (RSUs). On May 1, 2026, RSU vesting led to the acquisition of 4,572 shares of common stock through exercises or conversions.

To cover federal and state tax withholding from this vesting, 2,309 shares of common stock were relinquished and cancelled at a value of $86.29 per share, with the issuer paying the related tax obligations. Following these transactions, Whittle directly held 94,069 shares of Fortinet common stock and 4,825 RSUs, reflecting a compensation-driven adjustment rather than open-market trading.

Positive

  • None.

Negative

  • None.
Insider Whittle John
Role CHIEF OPERATING OFFICER
Type Security Shares Price Value
Exercise Restricted Stock Units 1,608 $0.00 --
Exercise Restricted Stock Units 1,827 $0.00 --
Exercise Restricted Stock Units 1,137 $0.00 --
Exercise Common Stock 1,608 $0.00 --
Exercise Common Stock 1,827 $0.00 --
Exercise Common Stock 1,137 $0.00 --
Tax Withholding Common Stock 2,309 $86.29 $199K
Holdings After Transaction: Restricted Stock Units — 4,825 shares (Direct, null); Common Stock — 94,069 shares (Direct, null)
Footnotes (1)
  1. Vesting of restricted stock units ("RSUs") previously granted to the Reporting Person. 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. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement. 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. RSUs do not expire; they either vest or are canceled prior to the vesting date. 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. 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.
Tax-withheld shares 2,309 shares at $86.29 Common stock relinquished to cover tax obligations from RSU vesting on May 1, 2026
RSU-derived shares 4,572 shares Common shares acquired via exercise/conversion of RSUs on May 1, 2026
Common shares held 94,069 shares Direct Fortinet common stock holdings after final reported transaction
RSUs remaining 4,825 RSUs Restricted stock units outstanding after final RSU transaction
Exercise transactions 3 exercises, 4,572 shares Derivative exercises/conversions summarized in transactionSummary
Tax withholding count 1 transaction, 2,309 shares Tax-withholding disposition recorded with code F
Restricted Stock Units financial
"Vesting of restricted stock units ("RSUs") previously 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.
RSUs financial
"Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement."
RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.
Section 16b-3(e) regulatory
"Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities..."
Rule 16b-3 regulatory
"incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3."
Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.
contingent right financial
"Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement."
SEC Form 4
FORM 4UNITED 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*
Whittle John

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
CHIEF OPERATING OFFICER
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/01/2026M(1)1,608A$094,069D
Common Stock05/01/2026M(1)1,827A$095,896D
Common Stock05/01/2026M(1)1,137A$097,033D
Common Stock05/01/2026F(2)2,309D$86.2994,724D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units$0(3)05/01/2026M(1)1,608 (4) (5)Common Stock1,608$04,825D
Restricted Stock Units$0(3)05/01/2026M(1)1,827 (6) (5)Common Stock1,827$012,788D
Restricted Stock Units$0(3)05/01/2026M(1)1,137 (7) (5)Common Stock1,137$012,515D
Explanation of Responses:
1. Vesting of restricted stock units ("RSUs") previously granted to the Reporting Person.
2. 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.
3. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement.
4. 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.
5. RSUs do not expire; they either vest or are canceled prior to the vesting date.
6. 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.
7. 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.
/s/ Robert Turner, by power of attorney05/05/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transactions did Fortinet (FTNT) COO John Whittle report?

John Whittle reported RSU-related transactions, acquiring 4,572 shares of Fortinet common stock from vested restricted stock units and relinquishing 2,309 shares to cover tax withholding. These are compensation-driven entries, not open-market purchases or sales.

Were John Whittle’s Fortinet (FTNT) transactions open-market buys or sells?

The filing shows no open-market buys or sells. Shares were acquired through RSU vesting and derivative exercises and some were withheld to pay taxes, an exempt transaction under Section 16b-3(e), rather than discretionary trading.

How many Fortinet (FTNT) shares were withheld for COO John Whittle’s taxes?

The filing reports 2,309 shares of Fortinet common stock relinquished and cancelled to satisfy federal and state tax withholding obligations, valued at $86.29 per share, in connection with the vesting of restricted stock units granted to John Whittle.

What are Fortinet (FTNT) RSUs and how did they affect John Whittle’s holdings?

Fortinet RSUs give a contingent right to receive one share of common stock at settlement. As RSUs vested on scheduled dates, 4,572 common shares were delivered to John Whittle, increasing his direct holdings while reducing his unvested RSU balance.

What are John Whittle’s reported Fortinet (FTNT) holdings after these transactions?

After the reported RSU vesting and tax-withholding disposition, John Whittle directly held 94,069 shares of Fortinet common stock and 4,825 restricted stock units, based on the share balances shown following the final transactions in the Form 4.