=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-06-02
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Fortinet, Inc. (FTNT)
CIK: 0001262039
--- Reporting Owner ---
Name: Xie Ken
CIK: 0001475587
Role: Director, Officer (PRESIDENT & CEO)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-06-02 | Code: M (Exercise of derivative)
Shares: +155,000 | Price: $22.90
Total Value: $3,549,500.00
Shares Owned After: 53,133,004 | Ownership: D (Direct)
[Transaction #2]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -9,641 | Price: $142.37
Total Value: $1,372,622.91
Shares Owned After: 53,123,363 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F2] Represents the weighted average sale price. The lowest price at which shares were sold was $141.81 and the highest price at which shares were sold was $142.80. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the ranges set forth in footnotes (2) through (9) to this Form 4.
[Transaction #3]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -19,867 | Price: $143.43
Total Value: $2,849,597.32
Shares Owned After: 53,103,496 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F3] Represents the weighted average sale price. The lowest price at which shares were sold was $142.81 and the highest price at which shares were sold was $143.80.
[Transaction #4]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -39,854 | Price: $144.29
Total Value: $5,750,541.63
Shares Owned After: 53,063,642 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F4] Represents the weighted average sale price. The lowest price at which shares were sold was $143.81 and the highest price at which shares were sold was $144.80.
[Transaction #5]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -12,821 | Price: $145.04
Total Value: $1,859,551.43
Shares Owned After: 53,050,821 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F5] Represents the weighted average sale price. The lowest price at which shares were sold was $144.81 and the highest price at which shares were sold was $145.68.
[Transaction #6]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -37,540 | Price: $146.36
Total Value: $5,494,421.97
Shares Owned After: 53,013,281 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F6] Represents the weighted average sale price. The lowest price at which shares were sold was $145.86 and the highest price at which shares were sold was $146.85.
[Transaction #7]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -13,790 | Price: $147.37
Total Value: $2,032,297.11
Shares Owned After: 52,999,491 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F7] Represents the weighted average sale price. The lowest price at which shares were sold was $146.87 and the highest price at which shares were sold was $147.86.
[Transaction #8]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -18,492 | Price: $148.24
Total Value: $2,741,161.62
Shares Owned After: 52,980,999 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F8] Represents the weighted average sale price. The lowest price at which shares were sold was $147.87 and the highest price at which shares were sold was $148.82.
[Transaction #9]
Security: Common Stock
Date: 2026-06-02 | Code: S (Open market sale)
Shares: -8,627 | Price: $148.94
Total Value: $1,284,864.83
Shares Owned After: 52,972,372 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
[F9] Represents the weighted average sale price. The lowest price at which shares were sold was $148.87 and the highest price at which shares were sold was $149.01.
--- Derivative Transactions ---
[Transaction #1]
Security: Nonqualified Stock Option (right to buy)
Date: 2026-06-02 | Code: M (Exercise of derivative)
Shares: -155,000 | Price: $0.00
Exercisable: N/A | Expires: 2027-02-21
Shares Owned After: 461,470 | Ownership: D (Direct)
Footnotes:
[F10] The options are fully vested.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
--- Footnotes (Complete Index) ---
F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2024.
F10: The options are fully vested.
F2: Represents the weighted average sale price. The lowest price at which shares were sold was $141.81 and the highest price at which shares were sold was $142.80. The Reporting Person undertakes to provide upon request to the staff of the Securities and Exchange Commission, the Issuer or its stockholders, full information regarding the total number of shares sold at each separate price within the ranges set forth in footnotes (2) through (9) to this Form 4.
F3: Represents the weighted average sale price. The lowest price at which shares were sold was $142.81 and the highest price at which shares were sold was $143.80.
F4: Represents the weighted average sale price. The lowest price at which shares were sold was $143.81 and the highest price at which shares were sold was $144.80.
F5: Represents the weighted average sale price. The lowest price at which shares were sold was $144.81 and the highest price at which shares were sold was $145.68.
F6: Represents the weighted average sale price. The lowest price at which shares were sold was $145.86 and the highest price at which shares were sold was $146.85.
F7: Represents the weighted average sale price. The lowest price at which shares were sold was $146.87 and the highest price at which shares were sold was $147.86.
F8: Represents the weighted average sale price. The lowest price at which shares were sold was $147.87 and the highest price at which shares were sold was $148.82.
F9: Represents the weighted average sale price. The lowest price at which shares were sold was $148.87 and the highest price at which shares were sold was $149.01.
--- Signature ---
/s/ /s/ Robert Turner, by power of attorney (2026-06-03)
