Ambiq Micro's three largest insider shareholders as of March 23, 2026 are Xvi Associates, Llc Kpcb (TenPercentOwner, 1.49Mn shares), Wen Hsuan Hsieh (Director, 633.92K shares), Fumihide Esaka (Chief Executive Officer, 391.19K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Xvi Associates, Llc Kpcb | 0 | 1,488,949 | 31 Jul, 2025 | |
| Wen Hsuan Hsieh | 0 | 633,920 | 20 Feb, 2026 | |
| Fumihide Esaka | Chief Executive Officer | 391,189 | 0 | 10 Mar, 2026 |
| Scott Mclean Hanson | Chief Technology Officer | 203,126 | 0 | 10 Mar, 2026 |
| Sean Chihhsiang Chen | President And Coo | 120,275 | 0 | 10 Mar, 2026 |
| Jeffrey G Winzeler | Chief Financial Officer | 94,395 | 0 | 10 Mar, 2026 |
| Michele Kim Connors | General Counsel | 61,365 | 0 | 10 Mar, 2026 |
| Joseph A Tautges | 48,746 | 0 | 28 Jan, 2026 | |
| Timothy Chen | 47,618 | 0 | 31 Jul, 2025 | |
| Ker Zhang | 23,809 | 0 | 31 Jul, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Mar, 2026 | Sean Chihhsiang Chen | Common Stock | A | 64,246 | $0.00 | 120,275 | D | A |
| 06 Mar, 2026 | Scott Mclean Hanson | Common Stock | A | 80,308 | $0.00 | 203,126 | D | A |
| 06 Mar, 2026 | Michele Kim Connors | Common Stock | A | 32,123 | $0.00 | 61,365 | D | A |
| 06 Mar, 2026 | Jeffrey G Winzeler | Common Stock | A | 41,728 | $0.00 | 94,395 | D | A |
| 06 Mar, 2026 | Fumihide Esaka | Common Stock | A | 160,616 | $0.00 | 391,189 | D | A |
| 18 Feb, 2026 | Wen Hsuan Hsieh | Common Stock | A | 238,931 | $12.60 | 633,920 | I | M |
| 18 Feb, 2026 | Wen Hsuan Hsieh | Warrant (Right to Buy) | D | 238,931 | $0.00 | 0 | I | M |
| 26 Jan, 2026 | Joseph A Tautges | Common Stock | D | 7,800 | $31.00 | 48,746 | D | S |
| 26 Jan, 2026 | Scott Mclean Hanson | Common Stock | D | 10,000 | $31.00 | 122,818 | D | S |
| 05 Jan, 2026 | Michele Kim Connors | Common Stock | A | 23,759 | $0.00 | 23,759 | D | A |
| 05 Jan, 2026 | Michele Kim Connors | Common Stock | A | 5,483 | $0.00 | 29,242 | D | A |
| 02 Oct, 2025 | Sean Chihhsiang Chen | Common Stock | A | 56,029 | $0.00 | 56,029 | D | A |
| 02 Oct, 2025 | Fumihide Esaka | Common Stock | A | 159,907 | $0.00 | 176,913 | D | A |
| 02 Oct, 2025 | Jeffrey G Winzeler | Common Stock | A | 52,667 | $0.00 | 52,667 | D | A |
| 02 Oct, 2025 | Scott Mclean Hanson | Common Stock | A | 83,819 | $0.00 | 132,818 | D | A |
| 31 Jul, 2025 | Xvi Associates, Llc Kpcb | Common Stock | A | 748,046 | - | 1,172,079 | I | C |
| 31 Jul, 2025 | Wen Hsuan Hsieh | Common Stock | A | 394,989 | - | 394,989 | I | C |
| 29 Jul, 2025 | Joseph A Tautges | Common Stock | A | 56,546 | $0.00 | 56,546 | D | A |
| 29 Jul, 2025 | Timothy Chen | Common Stock | A | 47,618 | $0.00 | 47,618 | D | A |
| 29 Jul, 2025 | Ker Zhang | Common Stock | A | 23,809 | $0.00 | 23,809 | D | A |