AMBQ insider trading activity (SEC Form 4). Over the trailing 90 days, AMBQ insiders filed 0 purchases totalling $0 and 5 sales totalling $16.3M — net SELLING of $16.3M. Most recent filing: May 29, 2026. Insider transactions are a Pro-tier alertable signal in the live Top Tier Newswire terminal — Form 4 filings reach the wire within minutes of acceptance by the SEC. Data shown publicly here is delayed 4 hours.
| Filed | Insider | Role | Type | Shares | Price | Value | |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | Chen Timothy | S Sale | — | $79.79 | $5.6M | filing | |
| May 18, 2026 | Chen Sean Chihhsiang | S SaleOE | — | $70.89 | $3.9M | filing | |
| May 18, 2026 | Winzeler Jeffrey G | S SaleOE | — | $69.90 | $1.8M | filing | |
| May 18, 2026 | Hanson Scott McLean | S SaleOE | — | $69.24 | $706K | filing | |
| May 18, 2026 | Esaka Fumihide | S SaleOE | — | $70.02 | $4.2M | filing |