Ambiq Micro, Inc. (AMBQ) Insider Ownership

Historic Insider Ownership Trends

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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
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