AMBQ
Ambiq Micro, Inc.
NYSE · Technology · Semiconductors · US
$57.45
+1.81%0
Insider buys (3m)
17
Insider sells (3m)
-$10.7M
Net value (3m)
-23.2%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 13,500 | $8.12 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 9,271 | $13 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 35,000 | $13 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 9,575 | $57 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 1,452 | $56 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 11,027 | $13 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 48,973 | $56 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 48,973 | $13 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 5,600 | $58 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 13,800 | $58 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 15,600 | $57 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 44,271 | $13 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 2,100 | $59 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 5,501 | $58 |
| Sep 2, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 5,899 | $57 |
| Aug 28, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | M-Exempt | 27,500 | $8.12 |
| Aug 28, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | Sale | 4,910 | $60 |
| Aug 28, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | Sale | 22,590 | $60 |
| Aug 28, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | Sale | 27,500 | $60 |
| Aug 28, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | M-Exempt | 10,000 | $8.12 |
| Aug 18, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | Sale | 800 | $63 |
| Aug 18, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 1,500 | $65 |
| Aug 18, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 10,718 | $64 |
| Aug 18, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | Sale | 1,282 | $63 |
| Aug 18, 2026 | Esaka Fumihide · director, officer: Chief Executive Officer | M-Exempt | 13,500 | $8.12 |
| Aug 18, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | Sale | 5,400 | $64 |
| Aug 18, 2026 | Hanson Scott McLean · director, officer: Chief Technology Officer | M-Exempt | 7,000 | $8.12 |
| Jun 10, 2026 | Chen Timothy · director | A-Award | 4,957 | $0.00 |
| Jun 10, 2026 | HSIEH Wen Hsuan · director | A-Award | 4,957 | $0.00 |
| Jun 10, 2026 | ZHANG KER · director | A-Award | 4,957 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 136Increased 99Reduced 40Sold out 11
| Filer | Action | Shares | Filed |
|---|---|---|---|
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | New Position | 10,302,563 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 1,380,623 | Aug 7, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | New Position | 1,267,551 | May 15, 2026 |
| BLACKROCK, INC. | Increased | 1,013,161 | May 13, 2026 |
| T. Rowe Price Investment Management, Inc. | Reduced | 1,006,359 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | New Position | 983,916 | Aug 14, 2026 |
| Atreides Management, LP | Increased | 877,123 | Aug 14, 2026 |
| ATREIDES MANAGEMENT, LP | Increased | 862,175 | May 18, 2026 |
| STATE STREET CORP | Increased | 861,979 | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 768,539 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 707,404 | May 15, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 686,098 | May 15, 2026 |
| SCHONFELD STRATEGIC ADVISORS LLC | Increased | 656,552 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 651,786 | Aug 14, 2026 |
| ALLIANCEBERNSTEIN L.P. | Reduced | 609,607 | Aug 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 2, 2026