Chen Sean Chihhsiang has filed 7 insider transactions across 1 company since October 2025.
Most recent transaction: a option exercise of 55685 shares of Ambiq Micro, Inc. ($AMBQ) on May 15, 2026.
Activity breakdown: 0 open-market purchases and 2 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 15, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | M | Common Stock | 55685 | $5.88 | 175,960.0000 | 18,313,186 | 46.30% | 0.30% |
| May 15, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | S | Common Stock | 32351 | $70.53 | 143,609.0000 | 18,313,186 | 18.39% | 0.18% |
| May 15, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | S | Common Stock | 23334 | $71.37 | 120,275.0000 | 18,313,186 | 16.25% | 0.13% |
| May 15, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | M | Stock Option (Right to Buy) | 55685 | $0.00 | 1.0000 | 18,313,186 | 100.00% | 0.30% |
| March 6, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | A | Common Stock | 64246 | $0.00 | 120,275.0000 | 18,313,186 | 114.67% | 0.35% |
| March 6, 2026 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | A | Common Stock | 64246 | $0.00 | 120,275.0000 | 18,313,186 | 114.67% | 0.35% |
| Oct. 2, 2025 | Ambiq Micro, Inc. | $AMBQ | Chen Sean Chihhsiang | President and COO | A | Common Stock | 56029 | $0.00 | 56,029.0000 | 0 | 9999.99% | 0.00% |