AMBA insider trading — Ambarella Inc
Over the last 90 days, insiders at Ambarella Inc (AMBA) made 0 open-market purchases worth $0 and 4 open-market sales worth $915K, making them net sellers by $915K. The largest sale was by Wang Feng-Ming (CEO), who sold 6,086 shares for $395K on Sep 17, 2026.
Updated Oct 16, 2026.
Recent AMBA insider transactions
Every Form 4 filed by Ambarella Inc officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Paisley Christopher B | Director | S · Sale · 10b5-1 | Direct | 250 | $70.76 | $18K | Form 4 |
| Sep 18, 2026 | Young John Alexander | CFO | S · Sale · 10b5-1 | Direct | 1,896 | $67.28 | $128K | Form 4 |
| Sep 17, 2026 | Wang Feng-Ming | CEO | S · Sale | Direct | 6,086 | $64.83 | $395K | Form 4 |
| Sep 17, 2026 | Young John Alexander | CFO | S · Sale | Direct | 3,126 | $64.83 | $203K | Form 4 |
| Sep 17, 2026 | Ju Chi-Hong | Senior VP, Systems & GM | S · Sale | Direct | 2,009 | $64.83 | $130K | Form 4 |
| Sep 17, 2026 | Lee Chan W | Chief Operations Officer | S · Sale | Direct | 2,893 | $64.83 | $188K | Form 4 |
| Sep 8, 2026 | Hu Chenming | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Bryant Gregory M | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Richardson David Jeffrey | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Hon Hsiao-Wuen | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Breithaupt Chantelle Yvette | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Schwarting Elizabeth M | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
| Sep 8, 2026 | Paisley Christopher B | Director | A · Grant/award | Direct | 3,151 | — | — | Form 4 |
AMBA insider trading FAQ
Are insiders buying AMBA stock?
Not on the open market. In the last 90 days, Ambarella Inc insiders made no open-market purchases, and 4 open-market sales totaling $915K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading AMBA?
Recent sellers: Ju Chi-Hong, Lee Chan W, Wang Feng-Ming, Young John Alexander.
Where does AMBA insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.