Sean Chihhsiang Chen, President and COO at Ambiq Micro, Inc. (AMBQ), sold 15,000 shares at $57.09 ($858K) on 2026-09-04, disclosed to the SEC on 2026-09-09.
Scheduled sale ($858k) by President and COO under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $57.09 | 12,874 | $735K | 85.7% |
| 2 | $57.68 | 2,126 | $123K | 14.3% |
| Total | $57.17 avg | 15,000 | $858K | 100% |