Form4insider filings, from the source

Company · CIK 0001262039 · SIC 3577 — Computer Peripheral Equipment, NEC · Nasdaq

Fortinet, Inc. · FTNT

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $36.2M · 5net −$36.2M
$10k$10k$1M$1M$100M$100MbuyssalesJun 26Jul 11Jul 26Aug 11Aug 26Sep 11Sep 26

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 24, 2026 SForm 4 →Sep 25, 4:18 pm EDTChristiane OhlgartChief Financial Officer48$180.00$8,64010,345−0.46%10b5-1
Sep 14, 2026 SForm 4 →Sep 16, 4:22 pm EDTJohn WhittleCHIEF OPERATING OFFICER56,700$165.61$9,389,80896,987−36.9%10b5-1
Sep 14, 2026 MForm 4 →Sep 16, 4:22 pm EDTJohn WhittleCHIEF OPERATING OFFICER56,700$62.11$3,521,63799,822—10b5-1
Aug 4, 2026 SForm 4 →Aug 4, 5:12 pm EDTChristiane OhlgartChief Financial Officer387$164.59$63,69610,393−3.59%10b5-1
Aug 3, 2026 SForm 4 →Aug 4, 5:15 pm EDTMichael XieVP, ENGINEERING & CTO, Director3,121$162.63$507,5749,918,360−0.03%10b5-1
Aug 3, 2026 SForm 4 →Aug 4, 5:13 pm EDTKen XiePRESIDENT & CEO, Director161,482$162.66$26,266,87852,972,372−0.30%10b5-1
Aug 1, 2026 FMForm 4 →Aug 4, 5:16 pm EDTJohn WhittleCHIEF OPERATING OFFICER6,883$161.95$374,10596,987—
Aug 1, 2026 FMForm 4 →Aug 4, 5:15 pm EDTMichael XieVP, ENGINEERING & CTO, Director9,491$161.95$515,8119,921,481—10b5-1
Aug 1, 2026 FMForm 4 →Aug 4, 5:13 pm EDTKen XiePRESIDENT & CEO, Director174,704$28.59$4,620,15153,133,854—10b5-1
Aug 1, 2026 FMForm 4 →Aug 4, 5:12 pm EDTChristiane OhlgartChief Financial Officer2,215$161.95$94,09310,780—10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 14, 2026 MForm 4 →Sep 16, 4:22 pm EDTJohn WhittleCHIEF OPERATING OFFICER56,700——0—10b5-1
Aug 12, 2026 AForm 4 →Aug 13, 5:13 pm EDTJames G. StavridisDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:12 pm EDTJudith SimDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:11 pm EDTKenneth A GoldmanDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:10 pm EDTJean X. HuDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:09 pm EDTJanet NapolitanoDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:08 pm EDTMing HsiehDirector1,836——1,836—
Aug 12, 2026 AForm 4 →Aug 13, 5:07 pm EDTDerek T. KanDirector1,836——1,836—
Aug 1, 2026 MForm 4 →Aug 4, 5:16 pm EDTJohn WhittleCHIEF OPERATING OFFICER4,573——11,377—
Aug 1, 2026 MForm 4 →Aug 4, 5:15 pm EDTMichael XieVP, ENGINEERING & CTO, Director6,306——13,002—10b5-1
Aug 1, 2026 MForm 4 →Aug 4, 5:13 pm EDTKen XiePRESIDENT & CEO, Director168,093——306,470—10b5-1
Aug 1, 2026 MForm 4 →Aug 4, 5:12 pm EDTChristiane OhlgartChief Financial Officer1,634——3,308—10b5-1