AMBIQ MICRO INC (AMBQ) — insider trading
Information Technology · NYSE
AMBIQ MICRO INC (AMBQ) has 30 reported SEC Form 4 insider transactions in our data, including 11 open-market sales among the most recent 30 (latest 2026-06-08).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-08 | ZHANG KER | Director | Grant / award / vesting | 4,957 | $0.00 | $0 | Form 4 |
| 2026-06-08 | TAUTGES JOSEPH A | Director | Grant / award / vesting | 4,957 | $0.00 | $0 | Form 4 |
| 2026-06-08 | Banks Bernard Bennett | Director | Grant / award / vesting | 4,957 | $0.00 | $0 | Form 4 |
| 2026-06-08 | Chen Timothy | Director | Grant / award / vesting | 4,957 | $0.00 | $0 | Form 4 |
| 2026-06-08 | HSIEH Wen Hsuan | Director | Grant / award / vesting | 4,957 | $0.00 | $0 | Form 4 |
| 2026-06-02 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion (derivative) | 5,952 | $0.00 | $0 | Form 4 |
| 2026-06-02 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion | 5,952 | $16.80 | $100.0K | Form 4 |
| 2026-05-27 | Chen Timothy | Director | Open-market sale | 3,264 | $81.57 | $266.2K | Form 4 |
| 2026-05-27 | Chen Timothy | Director | Open-market sale | 20,666 | $80.61 | $1.67M | Form 4 |
| 2026-05-27 | Chen Timothy | Director | Open-market sale | 24,248 | $79.72 | $1.93M | Form 4 |
| 2026-05-27 | Chen Timothy | Director | Open-market sale | 22,414 | $78.85 | $1.77M | Form 4 |
| 2026-05-15 | Chen Sean Chihhsiang | Officer (President and COO) | Option exercise / conversion (derivative) | 55,685 | $0.00 | $0 | Form 4 |
| 2026-05-15 | Chen Sean Chihhsiang | Officer (President and COO) | Open-market sale | 23,334 | $71.37 | $1.67M | Form 4 |
| 2026-05-15 | Chen Sean Chihhsiang | Officer (President and COO) | Open-market sale | 32,351 | $70.53 | $2.28M | Form 4 |
| 2026-05-15 | Chen Sean Chihhsiang | Officer (President and COO) | Option exercise / conversion | 55,685 | $5.88 | $327.4K | Form 4 |
| 2026-05-15 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Option exercise / conversion (derivative) | 8,100 | $0.00 | $0 | Form 4 |
| 2026-05-15 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Option exercise / conversion | 8,100 | $8.12 | $65.8K | Form 4 |
| 2026-05-15 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion (derivative) | 5,952 | $0.00 | $0 | Form 4 |
| 2026-05-15 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion | 5,952 | $16.80 | $100.0K | Form 4 |
| 2026-05-14 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Option exercise / conversion (derivative) | 10,200 | $0.00 | $0 | Form 4 |
| 2026-05-14 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Open-market sale | 200 | $70.50 | $14.1K | Form 4 |
| 2026-05-14 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Open-market sale | 6,100 | $69.59 | $424.5K | Form 4 |
| 2026-05-14 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Open-market sale | 3,900 | $68.62 | $267.6K | Form 4 |
| 2026-05-14 | Hanson Scott McLean | Director, Officer (Chief Technology Officer) | Option exercise / conversion | 10,200 | $8.12 | $82.8K | Form 4 |
| 2026-05-14 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion (derivative) | 26,000 | $0.00 | $0 | Form 4 |
| 2026-05-14 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Open-market sale | 82 | $70.65 | $5.8K | Form 4 |
| 2026-05-14 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Open-market sale | 25,918 | $69.90 | $1.81M | Form 4 |
| 2026-05-14 | Winzeler Jeffrey G | Officer (Chief Financial Officer) | Option exercise / conversion | 26,000 | $16.80 | $436.8K | Form 4 |
| 2025-07-31 | Chen Timothy | Director | Conversion of derivative (derivative) | 1,707,853 | $0.00 | $0 | Form 4/A |
| 2025-07-31 | Chen Timothy | Director | Conversion of derivative | 70,592 | — | — | Form 4/A |
Ask the chat about AMBQ's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: AMBIQ MICRO INC (AMBQ).
Last updated 2026-06-08 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.