Ming Hsieh - 30 Sep 2026 Form 4 Insider Report for Fortinet, Inc. (FTNT)

Reporting relationship: Director
Issuer ticker: FTNT
Reported as of: 30 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Oct 2026, 19:44:29 UTC
Prior SEC filing: 03 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Robert Turner, by power of attorney

Key filing fact

Ming Hsieh filed Form 4 for Fortinet, Inc. (FTNT) on 01 Oct 2026.

Key facts

This page summarizes Ming Hsieh's Form 4 filing for Fortinet, Inc. (FTNT).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 01 Oct 2026, 19:44.

Change

Previous filing in this sequence was filed on 03 Sep 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 0001302110 Primary reporting owner

Hsieh Ming

Relationship: Director
Address: C/O FORTINET, INC., 909 KIFER ROAD, SUNNYVALE
Signature: /s/ Robert Turner, by power of attorney
Signature date: 01 Oct 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: +459
Change %: +4.8%
Price: $0.000000^*
Shares after: 10,056
Date: 30 Sep 2026
Ownership: Direct
Footnotes: F1

FTNT holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 53,082
Date: 30 Sep 2026
Ownership: By Trust
Footnotes: F2

FTNT holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 25
Date: 30 Sep 2026
Ownership: By Trust
Footnotes: F3

FTNT holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 25
Date: 30 Sep 2026
Ownership: By Trust
Footnotes: F4

FTNT holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 143
Date: 30 Sep 2026
Ownership: By Trust
Footnotes: F5

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: -459
Change %: -25%
Price: $0.000000^*
Shares after: 1,377
Date: 30 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 459
Exercise price: $0.000000
Footnotes: F1, F6, F7, F8

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

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

Footnote F2

Securities held by The Ming Hsieh Trust (the "Hsieh Trust"). Mr. Hsieh is the trustee of the Hsieh Trust and possesses the sole voting and dispositive power with respect to securities held by the Hsieh Trust.

Footnote F3

These securities are held by the Pauline Hsieh Irrevocable Trust dated 05/12/04, of which the Reporting Person is a trustee.

Footnote F4

These securities are held by the Tiffany Hsieh Irrevocable Trust dated 05/12/04, of which the Reporting Person is a trustee.

Footnote F5

These securities are held by the Ming Hsieh Revocable Family Trust, of which the Reporting Person is a trustee.

Footnote F6

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

Footnote F7

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.

Footnote F8

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