Form4.ai tracks every SEC insider trade in real time. See every AMBA insider filing with a free account — no card.
See every AMBA insider filing — free account, no card.
Free accountAMBARELLA INC (AMBA) has 13 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 6 sales totalling $1.1M. Most recent filing: Sept. 28, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Sep 28, 2026 SEC filing | PAISLEY CHRISTOPHER B Director | Sold | $17,690 | — |
| Sep 21, 2026 SEC filing | Young John Alexander CFO | Sold | $127,563 | — |
| Sep 18, 2026 SEC filing | Wang Feng-Ming CEO | Sold | $394,555 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.