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Ambiq Micro, Inc. (New York Stock Exchange:AMBQ)
US · Delayed Price · Currency is USD
Technology · Semiconductors
51.06+0.70 (+1.39%)
Insider Score
––Not scored
AMBQ Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
AMBQ Stock Insider Trading Activity
AMBQ stock’s insider trading shows 25 sales on the open market for an estimated $3.77M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Hanson Scott McLean Director | Sell | 900 | $50.08 | $45.07K | 0.4% | 218,046 | Oct 15, 2026 | — | Form 4 |
| Hanson Scott McLean Director | Sell | 600 | $49.06 | $29.44K | 0.3% | 218,946 | Oct 15, 2026 | — | Form 4 |
| Hanson Scott McLean Director | Option exercise | 7,000 | $8.12 | $56.84K | 3.3% | 219,546 | Oct 15, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 1,200 | $51.85 | $62.23K | 0.3% | 443,900 | Oct 15, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 2,800 | $51.15 | $143.21K | 0.6% | 445,100 | Oct 15, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 500 | $50.02 | $25.01K | 0.1% | 447,900 | Oct 15, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 500 | $49.13 | $24.57K | 0.1% | 448,400 | Oct 15, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Option exercise | 5,000 | $8.12 | $40.60K | 1.1% | 448,900 | Oct 15, 2026 | — | Form 4 |
| Hanson Scott McLean Director | Sell | 1,800 | $51.86 | $93.35K | 0.8% | 212,546 | Oct 15, 2026 | — | Form 4 |
| Hanson Scott McLean Director | Sell | 3,700 | $51.12 | $189.15K | 1.7% | 214,346 | Oct 15, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 4,000 | $53.44 | $213.75K | 3.6% | 106,468 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 200 | $54.27 | $10.85K | 0.2% | 106,268 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Option exercise | 15,000 | $8.12 | $121.80K | 14.1% | 121,268 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 7,539 | $50.13 | $377.92K | 6.2% | 113,729 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 1,261 | $51.53 | $64.98K | 1.1% | 112,468 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 2,000 | $52.47 | $104.94K | 1.8% | 110,468 | Oct 14, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 800 | $68.08 | $54.46K | 0.7% | 106,368 | Oct 5, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 5,508 | $66.38 | $365.63K | 4.8% | 108,965 | Oct 5, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 1,797 | $67.29 | $120.91K | 1.6% | 107,168 | Oct 5, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 100 | $69.51 | $6.95K | 0.1% | 106,268 | Oct 5, 2026 | — | Form 4 |
| Winzeler Jeffrey G CFO | Sell | 284 | $71.86 | $20.41K | 0.3% | 100,844 | Oct 2, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 302 | $71.86 | $21.70K | 0.3% | 114,473 | Oct 2, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 3,008 | $69.77 | $209.87K | 2.6% | 114,775 | Oct 2, 2026 | — | Form 4 |
| Chen Sean Chihhsiang COO | Sell | 2,492 | $69.11 | $172.22K | 2.1% | 117,783 | Oct 2, 2026 | — | Form 4 |
| Hanson Scott McLean Director | Sell | 3,728 | $69.11 | $257.64K | 1.7% | 217,498 | Oct 2, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 862 | $71.86 | $61.94K | 0.2% | 443,900 | Oct 2, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 8,585 | $69.77 | $598.99K | 1.9% | 444,762 | Oct 2, 2026 | — | Form 4 |
| Esaka Fumihide CEO | Sell | 7,113 | $69.11 | $491.57K | 1.5% | 453,347 | Oct 2, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.