AMBQ AMBIQ MICRO INC
FollowCOMMON STOCK (common), issuer CIK 1500412
Filings received so far for Q3 2026: 3 13F filers report a position in AMBQ shares at 2026-09-30. The quarter is not complete: its 13F deadline is 2026-11-14, and the counts grow as filings arrive.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
| Owner | Date | Shares | Price | Filing |
|---|---|---|---|---|
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-05 | -100 S | $69.51 | Form 4 |
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-05 | -800 S | $68.0757 | Form 4 |
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-05 | -1,797 S | $67.2861 | Form 4 |
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-05 | -5,508 S | $66.3808 | Form 4 |
| Winzeler Jeffrey Gofficer (Chief Financial Officer) | 2026-10-02 | -284 S | $71.8592 | Form 4 |
| Winzeler Jeffrey Gofficer (Chief Financial Officer) | 2026-10-02 | -2,828 S | $69.7722 | Form 4 |
| Winzeler Jeffrey Gofficer (Chief Financial Officer) | 2026-10-02 | -2,343 S | $69.1083 | Form 4 |
| Esaka Fumihidedirector, officer (Chief Executive Officer) | 2026-10-02 | -862 S | $71.8592 | Form 4 |
| Esaka Fumihidedirector, officer (Chief Executive Officer) | 2026-10-02 | -8,585 S | $69.7722 | Form 4 |
| Esaka Fumihidedirector, officer (Chief Executive Officer) | 2026-10-02 | -7,113 S | $69.1083 | Form 4 |
| Hanson Scott McLeandirector, officer (Chief Technology Officer) | 2026-10-02 | -452 S | $71.8592 | Form 4 |
| Hanson Scott McLeandirector, officer (Chief Technology Officer) | 2026-10-02 | -4,500 S | $69.7722 | Form 4 |
| Hanson Scott McLeandirector, officer (Chief Technology Officer) | 2026-10-02 | -3,728 S | $69.1083 | Form 4 |
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-02 | -302 S | $71.8592 | Form 4 |
| Chen Sean Chihhsiangofficer (President and COO) | 2026-10-02 | -3,008 S | $69.7722 | Form 4 |
13F holders, Q3 2026
Filers in the available 13F reports with a share position at 2026-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Versant Capital Management, Inc | 236 | $16.1K | <0.01% | +46 | 13F-HRTimeline |
| GAMMA Investing LLC | 130 | $8.86K | <0.01% | +80 | 13F-HRTimeline |
| Farther Finance Advisors, LLC | 118 | $8.04K | <0.01% | -21 | 13F-HRTimeline |
Events
Winzeler Jeffrey G sold 5,455 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0001312143-26-000013
Accepted , ingestedEsaka Fumihide sold 16,560 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0002078454-26-000018
Accepted , ingestedHanson Scott McLean sold 8,680 AMBQ shares on 2026-10-02, Form 4 filed 2026-10-06. 0002078339-26-000018
Accepted , ingestedChen Sean Chihhsiang sold 14,007 AMBQ shares between 2026-10-02 and 2026-10-05, Form 4 filed 2026-10-06. 0002078559-26-000014
Accepted , ingested