Ambiq Micro, Inc. (AMBQ) insider trading.
In Q3 2026, insiders at Ambiq Micro, Inc. reported 49 non-derivative transactions on 10 Forms 3, 4 and 5: 0 open-market purchases and 34 sales worth $17.6M.
- Transactions
- 49
- Purchases (P)
- 0
- Sales (S)
- 34
- Net shares, P minus S
- -294,685
- Insiders
- 4
- Last filed
- 2026-09-17
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Esaka Fumihide | Director, Officer · Chief Executive Officer | 24 | 0 | 17 |
| Hanson Scott McLean | Director, Officer · Chief Technology Officer | 14 | 0 | 9 |
| Chen Sean Chihhsiang | Officer · President and COO | 7 | 0 | 5 |
| Zhang Ker | Director | 4 | 0 | 3 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-15 | Hanson Scott McLean | M (A) | 7,000 | $8.12 | 228,226 | Form 4 |
| 2026-09-15 | Hanson Scott McLean | S (D) | 100 | $61 | 221,226 | Form 4 |
| 2026-09-15 | Hanson Scott McLean | S (D) | 4,947 | $60.56 | 221,326 | Form 4 |
| 2026-09-15 | Hanson Scott McLean | S (D) | 1,953 | $59.53 | 226,273 | Form 4 |
| 2026-09-15 | Esaka Fumihide | S (D) | 100 | $61 | 460,460 | Form 4 |
| 2026-09-15 | Esaka Fumihide | S (D) | 9,615 | $60.55 | 460,560 | Form 4 |
| 2026-09-15 | Esaka Fumihide | S (D) | 3,785 | $59.56 | 470,175 | Form 4 |
| 2026-09-15 | Esaka Fumihide | M (A) | 13,500 | $8.12 | 473,960 | Form 4 |
| 2026-09-14 | Chen Sean Chihhsiang | S (D) | 11,000 | $60.24 | 121,675 | Form 4 |
| 2026-09-14 | Chen Sean Chihhsiang | S (D) | 1,400 | $60.83 | 120,275 | Form 4 |
| 2026-09-14 | Chen Sean Chihhsiang | S (D) | 2,600 | $59.36 | 132,675 | Form 4 |
| 2026-09-14 | Chen Sean Chihhsiang | M (A) | 15,000 | $8.12 | 135,275 | Form 4 |
| 2026-09-11 | Zhang Ker | S (D) | 9,100 | $63.39 | 21,266 | Form 4 |
| 2026-09-11 | Zhang Ker | S (D) | 900 | $63.95 | 20,366 | Form 4 |
| 2026-09-11 | Esaka Fumihide | S (D) | 7,917 | $63.86 | 460,460 | Form 4 |
| 2026-09-11 | Esaka Fumihide | S (D) | 42,083 | $63.27 | 468,377 | Form 4 |
| 2026-09-11 | Esaka Fumihide | M (A) | 50,000 | $12.6 | 510,460 | Form 4 |
| 2026-09-04 | Zhang Ker | M (A) | 1,785 | $5.88 | 30,551 | Form 4 |
| 2026-09-04 | Zhang Ker | S (D) | 185 | $56.92 | 30,366 | Form 4 |
| 2026-09-04 | Chen Sean Chihhsiang | M (A) | 15,000 | $8.12 | 135,275 | Form 4 |
| 2026-09-04 | Chen Sean Chihhsiang | S (D) | 12,874 | $57.09 | 122,401 | Form 4 |
| 2026-09-04 | Chen Sean Chihhsiang | S (D) | 2,126 | $57.68 | 120,275 | Form 4 |
| 2026-09-02 | Esaka Fumihide | S (D) | 1,452 | $56.15 | 470,035 | Form 4 |
| 2026-09-02 | Esaka Fumihide | M (A) | 11,027 | $12.6 | 471,487 | Form 4 |
| 2026-09-02 | Esaka Fumihide | S (D) | 9,575 | $56.77 | 460,460 | Form 4 |
| 2026-09-01 | Esaka Fumihide | M (A) | 48,973 | $12.6 | 509,433 | Form 4 |
| 2026-09-01 | Esaka Fumihide | S (D) | 48,973 | $56.39 | 460,460 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 15,600 | $56.81 | 479,860 | Form 4 |
| 2026-08-31 | Esaka Fumihide | M (A) | 44,271 | $12.6 | 495,460 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 5,600 | $58.46 | 460,460 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 13,800 | $57.7 | 466,060 | Form 4 |
| 2026-08-31 | Esaka Fumihide | M (A) | 13,500 | $8.12 | 464,689 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 5,899 | $56.87 | 458,790 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 5,501 | $57.75 | 453,289 | Form 4 |
| 2026-08-31 | Esaka Fumihide | S (D) | 2,100 | $58.52 | 451,189 | Form 4 |
| 2026-08-27 | Hanson Scott McLean | S (D) | 22,590 | $59.69 | 226,136 | Form 4 |
| 2026-08-27 | Hanson Scott McLean | S (D) | 4,910 | $60.32 | 221,226 | Form 4 |
| 2026-08-27 | Hanson Scott McLean | M (A) | 27,500 | $8.12 | 248,726 | Form 4 |
| 2026-08-26 | Hanson Scott McLean | M (A) | 27,500 | $8.12 | 248,726 | Form 4 |
| 2026-08-26 | Hanson Scott McLean | S (D) | 27,500 | $59.58 | 221,226 | Form 4 |
| 2026-08-26 | Hanson Scott McLean | M (A) | 10,000 | $8.12 | 221,226 | Form 4 |
| 2026-08-14 | Hanson Scott McLean | M (A) | 7,000 | $8.12 | 218,226 | Form 4 |
| 2026-08-14 | Hanson Scott McLean | S (D) | 800 | $63.26 | 217,426 | Form 4 |
| 2026-08-14 | Hanson Scott McLean | S (D) | 5,400 | $64.41 | 212,026 | Form 4 |
| 2026-08-14 | Hanson Scott McLean | S (D) | 800 | $65.3 | 211,226 | Form 4 |
| 2026-08-14 | Esaka Fumihide | S (D) | 1,500 | $65.26 | 451,189 | Form 4 |
| 2026-08-14 | Esaka Fumihide | S (D) | 10,718 | $64.4 | 452,689 | Form 4 |
| 2026-08-14 | Esaka Fumihide | S (D) | 1,282 | $63.29 | 463,407 | Form 4 |
| 2026-08-14 | Esaka Fumihide | M (A) | 13,500 | $8.12 | 464,689 | Form 4 |
Transaction codes in this quarter
Get AMBQ insider transactions through the API
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-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · AMBQ company page · Ambiq Micro, Inc. on SEC.gov
Questions
Are insiders buying or selling Ambiq Micro, Inc. (AMBQ)?
In Q3 2026, insiders at Ambiq Micro, Inc. reported 49 non-derivative transactions on 10 Forms 3, 4 and 5: 0 open-market purchases and 34 sales worth $17.6M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Ambiq Micro, Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Source: SEC Insider Transactions Data Sets, Q3 2026, retrieved 2026-10-27. Footnotes, derivative holdings and amendments are in the linked filings. Not investment advice.
Plain-text version for agents and LLMs: /insider-trading/ambq.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.