In the last 12 months, insiders at Ambiq Micro, Inc. ($AMBQ) filed 62 transactions with the SEC: 0 open-market purchases totaling $0 and 12 sales totaling $11,245,077. Net insider sentiment: net selling.
Ambiq Micro, Inc. operates in the Semiconductors & related devices industry (Manufacturing sector).
Most Active Insiders
- Esaka Fumihide (Chief Executive Officer) — 13 transactions totaling $5,556,169
- Chen Sean Chihhsiang (President and COO) — 7 transactions totaling $4,274,709
- HSIEH Wen Hsuan (Not found) — 4 transactions totaling $3,010,531
- Winzeler Jeffrey G (Chief Financial Officer) — 9 transactions totaling $2,354,206
- Hanson Scott McLean (Chief Technology Officer) — 10 transactions totaling $1,164,848
View all SEC Filings for Ambiq Micro, Inc. (AMBQ).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2026 | Hanson Scott McLean | Chief Technology Officer | M | Common Stock | 10200 | $8.12 | 213,326.0000 | 18,313,186 | 5.02% | 0.06% |
| May 15, 2026 | Winzeler Jeffrey G | Chief Financial Officer | M | Common Stock | 5952 | $16.80 | 100,347.0000 | 18,313,186 | 6.31% | 0.03% |
| May 14, 2026 | Winzeler Jeffrey G | Chief Financial Officer | S | Common Stock | 82 | $70.65 | 94,395.0000 | 18,313,186 | 0.09% | 0.00% |
| May 14, 2026 | Hanson Scott McLean | Chief Technology Officer | M | Stock Option (Right to Buy) | 10200 | $0.00 | 77,379.0000 | 18,313,186 | 11.65% | 0.06% |
| May 15, 2026 | Hanson Scott McLean | Chief Technology Officer | M | Common Stock | 8100 | $8.12 | 211,226.0000 | 18,313,186 | 3.99% | 0.04% |
| May 14, 2026 | Hanson Scott McLean | Chief Technology Officer | S | Common Stock | 200 | $70.50 | 203,126.0000 | 18,313,186 | 0.10% | 0.00% |
| May 14, 2026 | Hanson Scott McLean | Chief Technology Officer | S | Common Stock | 6100 | $69.59 | 203,326.0000 | 18,313,186 | 2.91% | 0.03% |
| May 14, 2026 | Hanson Scott McLean | Chief Technology Officer | S | Common Stock | 3900 | $68.62 | 209,426.0000 | 18,313,186 | 1.83% | 0.02% |
| May 15, 2026 | Winzeler Jeffrey G | Chief Financial Officer | M | Stock Option (Right to Buy) | 5952 | $0.00 | 110,905.0000 | 18,313,186 | 5.09% | 0.03% |
| May 14, 2026 | Winzeler Jeffrey G | Chief Financial Officer | M | Stock Option (Right to Buy) | 26000 | $0.00 | 116,857.0000 | 18,313,186 | 18.20% | 0.14% |
| May 14, 2026 | Winzeler Jeffrey G | Chief Financial Officer | S | Common Stock | 25918 | $69.90 | 94,477.0000 | 18,313,186 | 21.53% | 0.14% |
| May 14, 2026 | Winzeler Jeffrey G | Chief Financial Officer | M | Common Stock | 26000 | $16.80 | 120,395.0000 | 18,313,186 | 27.54% | 0.14% |
| May 15, 2026 | Esaka Fumihide | Chief Executive Officer | M | Stock Option (Right to Buy) | 6601 | $0.00 | 184,543.0000 | 18,313,186 | 3.45% | 0.04% |
| May 15, 2026 | Esaka Fumihide | Chief Executive Officer | M | Stock Option (Right to Buy) | 7936 | $0.00 | 114,007.0000 | 18,313,186 | 6.51% | 0.04% |
| May 15, 2026 | Esaka Fumihide | Chief Executive Officer | M | Stock Option (Right to Buy) | 45463 | $0.00 | 99,007.0000 | 18,313,186 | 31.47% | 0.25% |
| May 14, 2026 | Esaka Fumihide | Chief Executive Officer | M | Stock Option (Right to Buy) | 60000 | $0.00 | 144,470.0000 | 18,313,186 | 29.34% | 0.33% |
| May 15, 2026 | Esaka Fumihide | Chief Executive Officer | M | Common Stock | 14537 | $12.60 | 451,189.0000 | 18,313,186 | 3.33% | 0.08% |
| May 15, 2026 | Esaka Fumihide | Chief Executive Officer | M | Common Stock | 45463 | $8.12 | 436,652.0000 | 18,313,186 | 11.62% | 0.25% |
| May 14, 2026 | Esaka Fumihide | Chief Executive Officer | S | Common Stock | 60000 | $70.02 | 391,189.0000 | 18,313,186 | 13.30% | 0.33% |
| May 14, 2026 | Esaka Fumihide | Chief Executive Officer | M | Common Stock | 60000 | $8.12 | 451,189.0000 | 18,313,186 | 15.34% | 0.33% |
| May 15, 2026 | Chen Sean Chihhsiang | President and COO | M | Stock Option (Right to Buy) | 55685 | $0.00 | 1.0000 | 18,313,186 | 100.00% | 0.30% |
| May 15, 2026 | Chen Sean Chihhsiang | President and COO | S | Common Stock | 23334 | $71.37 | 120,275.0000 | 18,313,186 | 16.25% | 0.13% |
| May 15, 2026 | Chen Sean Chihhsiang | President and COO | S | Common Stock | 32351 | $70.53 | 143,609.0000 | 18,313,186 | 18.39% | 0.18% |
| May 15, 2026 | Chen Sean Chihhsiang | President and COO | M | Common Stock | 55685 | $5.88 | 175,960.0000 | 18,313,186 | 46.30% | 0.30% |
| May 15, 2026 | Hanson Scott McLean | Chief Technology Officer | M | Stock Option (Right to Buy) | 8100 | $0.00 | 69,279.0000 | 18,313,186 | 10.47% | 0.04% |
| April 2, 2026 | Connors Michele Kim | General Counsel | S | Common Stock | 660 | $26.04 | 60,705.0000 | 18,313,186 | 1.08% | 0.00% |
| April 2, 2026 | Connors Michele Kim | General Counsel | S | Common Stock | 151 | $26.65 | 60,554.0000 | 18,313,186 | 0.25% | 0.00% |
| March 6, 2026 | Chen Sean Chihhsiang | President and COO | A | Common Stock | 64246 | $0.00 | 120,275.0000 | 18,313,186 | 114.67% | 0.35% |
| March 6, 2026 | Hanson Scott McLean | Chief Technology Officer | A | Common Stock | 80308 | $0.00 | 203,126.0000 | 18,313,186 | 65.39% | 0.44% |
| March 6, 2026 | Esaka Fumihide | Chief Executive Officer | A | Common Stock | 160616 | $0.00 | 391,189.0000 | 18,313,186 | 69.66% | 0.88% |
| March 6, 2026 | Connors Michele Kim | General Counsel | A | Common Stock | 32123 | $0.00 | 61,365.0000 | 18,313,186 | 109.85% | 0.18% |
| March 6, 2026 | Winzeler Jeffrey G | Chief Financial Officer | A | Common Stock | 41728 | $0.00 | 94,395.0000 | 18,313,186 | 79.23% | 0.23% |
| March 6, 2026 | Connors Michele Kim | General Counsel | A | Common Stock | 32123 | $0.00 | 61,365.0000 | 18,313,186 | 109.85% | 0.18% |
| March 6, 2026 | Esaka Fumihide | Chief Executive Officer | A | Common Stock | 160616 | $0.00 | 391,189.0000 | 18,313,186 | 69.66% | 0.88% |
| March 6, 2026 | Winzeler Jeffrey G | Chief Financial Officer | A | Common Stock | 41728 | $0.00 | 94,395.0000 | 18,313,186 | 79.23% | 0.23% |
| March 6, 2026 | Chen Sean Chihhsiang | President and COO | A | Common Stock | 64246 | $0.00 | 120,275.0000 | 18,313,186 | 114.67% | 0.35% |
| March 6, 2026 | Hanson Scott McLean | Chief Technology Officer | A | Common Stock | 80308 | $0.00 | 203,126.0000 | 18,313,186 | 65.39% | 0.44% |
| Feb. 18, 2026 | HSIEH Wen Hsuan | Not found | M | Warrant (Right to Buy) | 238931 | $0.00 | 0.0000 | 18,313,186 | 100.00% | 1.30% |
| Feb. 18, 2026 | HSIEH Wen Hsuan | Not found | M | Common Stock | 238931 | $12.60 | 633,920.0000 | 18,313,186 | 60.49% | 1.30% |
| Oct. 7, 2025 | Esaka Fumihide | Chief Executive Officer | M | Stock Option (Right to Buy) | 53660 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 7, 2025 | Esaka Fumihide | Chief Executive Officer | M | Common Stock | 53660 | $5.88 | 230,573.0000 | 0 | 30.33% | 0.00% |
| Jan. 26, 2026 | TAUTGES JOSEPH A | Not found | S | Common Stock | 7800 | $31.00 | 48,746.0000 | 18,313,186 | 13.79% | 0.04% |
| Jan. 26, 2026 | Hanson Scott McLean | Chief Technology Officer | S | Common Stock | 10000 | $31.00 | 122,818.0000 | 18,313,186 | 7.53% | 0.05% |
| Jan. 5, 2026 | Connors Michele Kim | General Counsel | A | Common Stock | 5483 | $0.00 | 29,242.0000 | 18,313,186 | 23.08% | 0.03% |
| Jan. 5, 2026 | Connors Michele Kim | General Counsel | A | Common Stock | 23759 | $0.00 | 23,759.0000 | 18,313,186 | 9999.99% | 0.13% |
| Oct. 2, 2025 | Esaka Fumihide | Chief Executive Officer | A | Common Stock | 159907 | $0.00 | 176,913.0000 | 0 | 940.30% | 0.00% |
| Oct. 2, 2025 | Chen Sean Chihhsiang | President and COO | A | Common Stock | 56029 | $0.00 | 56,029.0000 | 0 | 9999.99% | 0.00% |
| Oct. 2, 2025 | Hanson Scott McLean | Chief Financial Officer | A | Common Stock | 83819 | $0.00 | 132,818.0000 | 0 | 171.06% | 0.00% |
| Oct. 2, 2025 | Winzeler Jeffrey G | Chief Financial Officer | A | Common Stock | 52667 | $0.00 | 52,667.0000 | 0 | 9999.99% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Common Stock | 748046 | $0.00 | 2,661,028.0000 | 0 | 39.10% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Common Stock | 98958 | $0.00 | 2,443,116.0000 | 0 | 4.22% | 0.00% |
| July 29, 2025 | TAUTGES JOSEPH A | Not found | A | Common Stock | 56546 | $0.00 | 56,546.0000 | 0 | 9999.99% | 0.00% |
| July 29, 2025 | ZHANG KER | Not found | A | Common Stock | 23809 | $0.00 | 23,809.0000 | 0 | 9999.99% | 0.00% |
| July 29, 2025 | Chen Timothy | Not found | A | Common Stock | 47618 | $0.00 | 47,618.0000 | 0 | 9999.99% | 0.00% |
| July 31, 2025 | HSIEH Wen Hsuan | Not found | C | Series G Convertible Preferred Stock | 394989 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2025 | HSIEH Wen Hsuan | Not found | C | Common Stock | 394989 | $0.00 | 394,989.0000 | 0 | 9999.99% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Series F Convertible Preferred Stock | 171064 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Series E Convertible Preferred Stock | 22594 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Series D Convertible Preferred Stock | 98958 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Series C Convertible Preferred Stock | 748046 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Common Stock | 194618 | $0.00 | 2,661,028.0000 | 0 | 7.89% | 0.00% |
| July 31, 2025 | KPCB XVI Associates, LLC | Not found | C | Common Stock | 23294 | $0.00 | 2,466,410.0000 | 0 | 0.95% | 0.00% |