Chen Sean Chihhsiang
Reporting owner on Forms 3, 4 and 5, CIK 2078559.
Chen Sean Chihhsiang reported on 1 issuer in 1 filing, the latest a Form 4 filed 2026-10-06.
Issuers
| Issuer | Roles in the latest filing | Filings | Last filed |
|---|---|---|---|
| AMBQ · Ambiq Micro, Inc.CIK 1500412 | officer (President and COO) | 1 | 2026-10-06 |
Transactions and holdings
Every row of the person's Forms 3, 4 and 5, newest first, with the price and the amount owned after the row as filed.
| Security | Date | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-05 | S sold | -5,508 | $66.3808 | 108,965 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-05 | S sold | -1,797 | $67.2861 | 107,168 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-05 | S sold | -800 | $68.0757 | 106,368 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-05 | S sold | -100 | $69.51 | 106,268 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-02 | S sold | -2,492 | $69.1083 | 117,783 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-02 | S sold | -3,008 | $69.7722 | 114,775 | Form 4 |
| AMBQ · Ambiq Micro, Inc.Common Stock | 2026-10-02 | S sold | -302 | $71.8592 | 114,473 | Form 4 |
Filings
The person's Forms 3, 4 and 5, and any 13D or 13G naming it.
| Filing | Subject | Filed | Accepted | Ingested |
|---|---|---|---|---|
| Form 4 0002078559-26-000014 | Ambiq Micro, Inc. | 2026-10-06 |