Chen Sean Chihhsiang
- SEC CIK
- 0002078559
In the past year, 3 open-market sale filings worth $5.71M and no purchases.
Current role at each company
- AMBQ Ambiq Micro, Inc.President and COOas of Sep 15, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $5.71M
- 3 filings
- Net
- −$5.71M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Chen Sean Chihhsiang as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 15, 2026 (view filing)6:57 PM ET | Sep 14 | 1 day | Chen Sean ChihhsiangPresident and COO | SSale | −15.0K | $60.14 | −$902.1K | −11.1%120.3K after | 3 lots10b5-1 |
| Sep 9, 2026 (view filing)5:10 PM ET | Sep 4 | 5 days | Chen Sean ChihhsiangPresident and COO | SSale | −15.0K | $57.17 | −$857.6K | −11.1%120.3K after | 2 lots10b5-1 |
| May 18, 2026 (view filing) | May 15 | 3 days | Chen Sean ChihhsiangPresident and COO | SSale | −55.7K | $70.88 | −$3.95M | −31.6%120.3K after | 2 lots |