=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-06-03
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Fortinet, Inc. (FTNT)
CIK: 0001262039
--- Reporting Owner ---
Name: Xie Michael
CIK: 0001475586
Role: Director, Officer (VP, ENGINEERING & CTO)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-06-03 | Code: S (Open market sale)
Shares: -464 | Price: $144.46
Total Value: $67,028.51
Shares Owned After: 9,927,053 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
[F2] Represents the weighted average sale price. The lowest price at which shares were sold was $144.03 and the highest price at which shares were sold was $144.64. 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 (6) to this Form 4.
[Transaction #2]
Security: Common Stock
Date: 2026-06-03 | Code: S (Open market sale)
Shares: -410 | Price: $145.72
Total Value: $59,744.54
Shares Owned After: 9,926,643 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
[F3] Represents the weighted average sale price. The lowest price at which shares were sold was $145.10 and the highest price at which shares were sold was $146.07.
[Transaction #3]
Security: Common Stock
Date: 2026-06-03 | Code: S (Open market sale)
Shares: -2,337 | Price: $146.55
Total Value: $342,487.82
Shares Owned After: 9,924,306 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
[F4] Represents the weighted average sale price. The lowest price at which shares were sold was $146.14 and the highest price at which shares were sold was $147.03.
[Transaction #4]
Security: Common Stock
Date: 2026-06-03 | Code: S (Open market sale)
Shares: -564 | Price: $147.71
Total Value: $83,307.09
Shares Owned After: 9,923,742 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
[F5] Represents the weighted average sale price. The lowest price at which shares were sold was $147.23 and the highest price at which shares were sold was $147.99.
[Transaction #5]
Security: Common Stock
Date: 2026-06-03 | Code: S (Open market sale)
Shares: -132 | Price: $148.30
Total Value: $19,575.72
Shares Owned After: 9,923,610 | Ownership: D (Direct)
Footnotes:
[F1] The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
[F6] Represents the weighted average sale price. The lowest price at which shares were sold was $148.28 and the highest price at which shares were sold was $148.31.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[F7] These securities are held by the 2010 K.A. Family Trust dated May 3, 2010, for which the Reporting Person serves as a trustee.
[Holding #2]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[F8] Shares held directly by the KAXX Trust under The K.A. Children's Trust dated February 9, 2011, for which the Reporting Person serves as a trustee.
[Holding #3]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[F9] Shares held directly by the KAJJ Trust under The K.A. Children's Trust dated February 9, 2011, for which the Reporting Person serves as a trustee.
[Holding #4]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[F10] These securities are held by a grantor retained annuity trust for the benefit of the Reporting Person.
[Holding #5]
Security: Common Stock
Ownership: I (Indirect)
Footnotes:
[F11] These securities are held by a grantor retained annuity trust for the benefit of the Reporting Person's spouse.
--- Footnotes (Complete Index) ---
F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.
F10: These securities are held by a grantor retained annuity trust for the benefit of the Reporting Person.
F11: These securities are held by a grantor retained annuity trust for the benefit of the Reporting Person's spouse.
F2: Represents the weighted average sale price. The lowest price at which shares were sold was $144.03 and the highest price at which shares were sold was $144.64. 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 (6) to this Form 4.
F3: Represents the weighted average sale price. The lowest price at which shares were sold was $145.10 and the highest price at which shares were sold was $146.07.
F4: Represents the weighted average sale price. The lowest price at which shares were sold was $146.14 and the highest price at which shares were sold was $147.03.
F5: Represents the weighted average sale price. The lowest price at which shares were sold was $147.23 and the highest price at which shares were sold was $147.99.
F6: Represents the weighted average sale price. The lowest price at which shares were sold was $148.28 and the highest price at which shares were sold was $148.31.
F7: These securities are held by the 2010 K.A. Family Trust dated May 3, 2010, for which the Reporting Person serves as a trustee.
F8: Shares held directly by the KAXX Trust under The K.A. Children's Trust dated February 9, 2011, for which the Reporting Person serves as a trustee.
F9: Shares held directly by the KAJJ Trust under The K.A. Children's Trust dated February 9, 2011, for which the Reporting Person serves as a trustee.
--- Signature ---
/s/ /s/ Robert Turner, by power of attorney (2026-06-03)
