Chen Sean Chihhsianginsider trades
In SEC Form 4 filings, Chen Sean Chihhsiang is listed as President and COO of Ambiq Micro, Inc. (AMBQ). In the last 90 days, Chen Sean Chihhsiang sold $3.48M of Ambiq Micro, Inc. (AMBQ) on the open market and bought none. All 17 sales were reported under a 10b5-1 trading plan.
Companies and roles
| Company | Role | Transactions | Last filed |
|---|---|---|---|
| AMBQAmbiq Micro, Inc. | President and COO | 23 | Oct 16 |
Cluster buys
No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).
Form 4 historysince 2026-09-09
| Company | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | M | 15,000 | $8.12 | $121,800 | 121,268 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | S | 7,539 | $50.13 | Sale −$377,923 | 113,729 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | S | 1,261 | $51.53 | Sale −$64,980 | 112,468 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | S | 2,000 | $52.47 | Sale −$104,936 | 110,468 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | S | 4,000 | $53.44 | Sale −$213,745 | 106,468 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | S | 200 | $54.27 | Sale −$10,854 | 106,268 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 14 | Oct 16 | M · derivative | 15,000 | $8.12 | $121,800 | 119,423 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 5 | Oct 6 | S | 5,508 | $66.38 | Sale −$365,625 | 108,965 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 5 | Oct 6 | S | 1,797 | $67.29 | Sale −$120,913 | 107,168 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 5 | Oct 6 | S | 800 | $68.08 | Sale −$54,461 | 106,368 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 5 | Oct 6 | S | 100 | $69.51 | Sale −$6,951 | 106,268 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 2,492 | $69.11 | Sale −$172,218 | 117,783 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 3,008 | $69.77 | Sale −$209,875 | 114,775 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 302 | $71.86 | Sale −$21,701 | 114,473 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 14 | Sep 15 | M | 15,000 | $8.12 | $121,800 | 135,275 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 14 | Sep 15 | S | 2,600 | $59.36 | Sale −$154,346 | 132,675 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 14 | Sep 15 | S | 11,000 | $60.24 | Sale −$662,618 | 121,675 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 14 | Sep 15 | S | 1,400 | $60.83 | Sale −$85,166 | 120,275 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 14 | Sep 15 | M · derivative | 15,000 | $8.12 | $121,800 | 134,423 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 4 | Sep 9 | M | 15,000 | $8.12 | $121,800 | 135,275 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 4 | Sep 9 | S | 12,874 | $57.09 | Sale −$734,933 | 122,401 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 4 | Sep 9 | S | 2,126 | $57.68 | Sale −$122,625 | 120,275 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 4 | Sep 9 | M · derivative | 15,000 | $8.12 | $121,800 | 149,423 | Yes | Form 4 |
Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.