Form4insider filings, from the source

Company · CIK 0001280263 · SIC 3674 — Semiconductors & Related Devices · Nasdaq

AMBARELLA INC · AMBA

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

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $5.6M · 14net −$5.6M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 2024Jan 2025May 2025Sep 2025Jan 2026May 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 SForm 4 →Sep 21, 5:57 pm EDTJohn Alexander YoungCFO1,896$67.28$127,563107,806−1.73%10b5-1
Sep 17, 2026 SForm 4 →Sep 18, 4:51 pm EDTFeng-Ming WangCEO, Director6,086$64.83$394,555767,759−0.79%
Sep 17, 2026 SForm 4 →Sep 18, 4:50 pm EDTChi-Hong JuSenior VP, Systems & GM2,009$64.83$130,243154,153−1.29%
Sep 17, 2026 SForm 4 →Sep 18, 4:50 pm EDTChan W LeeChief Operations Officer2,893$64.83$187,553154,443−1.84%
Sep 17, 2026 SForm 4 →Sep 18, 4:50 pm EDTJohn Alexander YoungCFO3,126$64.83$202,659109,702−2.77%
Sep 8, 2026 AForm 4 →Sep 10, 5:36 pm EDTChenming HuDirector3,151——32,667—
Sep 8, 2026 AForm 4 →Sep 10, 4:49 pm EDTGregory M BryantDirector3,151——5,608—
Sep 8, 2026 AForm 4 →Sep 10, 4:48 pm EDTChantelle Yvette BreithauptDirector3,151——8,091—
Sep 8, 2026 AForm 4 →Sep 10, 4:48 pm EDTElizabeth M SchwartingDirector3,151——9,841—
Sep 8, 2026 AForm 4 →Sep 10, 4:48 pm EDTHsiao-Wuen HonDirector3,151——33,927—
Sep 8, 2026 AForm 4 →Sep 10, 4:48 pm EDTDavid Jeffrey RichardsonDirector3,151——5,649—
Sep 8, 2026 AForm 4 →Sep 10, 4:47 pm EDTChristopher B PaisleyDirector3,151——44,180—
Jul 9, 2026 SForm 4 →Jul 10, 4:55 pm EDTYun-Lung ChenVP, Business Dev. & Marketing5,958$78.66$468,65660,557−8.96%
Jul 1, 2026 SForm 4 →Jul 2, 4:58 pm EDTChi-Hong JuSenior VP, Systems & GM10,000$88.84$888,400155,924−6.03%
Jul 1, 2026 SForm 4 →Jul 2, 4:57 pm EDTFeng-Ming WangCEO, Director16,250$90.08$1,463,800773,607−2.06%10b5-1
Jun 26, 2026 SForm 4 →Jun 30, 5:17 pm EDTChristopher B PaisleyDirector250$62.01$15,50341,029−0.61%10b5-1
Jun 17, 2026 SForm 4 →Jun 18, 4:55 pm EDTJohn Alexander YoungCFO5,033$67.54$339,946112,590−4.28%10b5-1
Jun 17, 2026 SForm 4 →Jun 18, 4:55 pm EDTChan W LeeChief Operations Officer2,951$67.87$200,284157,098−1.84%
Jun 17, 2026 SForm 4 →Jun 18, 4:54 pm EDTChi-Hong JuSenior VP, Systems & GM2,017$67.87$136,894165,924−1.20%
Jun 17, 2026 GForm 4 →Jun 18, 4:54 pm EDTFeng-Ming WangCEO, Director10,000——789,857—
Jun 17, 2026 SForm 4 →Jun 18, 4:54 pm EDTFeng-Ming WangCEO, Director6,204$67.87$421,065799,857−0.77%
Jun 12, 2026 SForm 4 →Jun 16, 4:57 pm EDTYun-Lung ChenVP, Business Development and9,856$67.06$660,94366,515−12.9%

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

No reported derivative activity in this period.