Fumihide Esaka sold $6.2M of AMBQ
Chief Executive Officer at Ambiq Micro, Inc.. 108,500 shares at an average of $56.89, traded Aug 31, 2026, filed Sep 2, 2026.
Score components
- +25RoleCEO
- +25Trade size$6.2M at market
- +5Share of holdings soldSold 23% of holdings
- +15Cluster4 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0002078454-26-000012, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | MOption exercise Common Stock10b5-1 | +13,500 | $8.12 | $110k | 464,689 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -5,899 | $56.87 | $335k | 458,790 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -5,501 | $57.75 | $318k | 453,289 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -2,100 | $58.52 | $123k | 451,189 | 42 d ago |
| Aug 31, 2026 | MOption exercise Common Stock10b5-1 | +44,271 | $12.60 | $558k | 495,460 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -15,600 | $56.81 | $886k | 479,860 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -13,800 | $57.70 | $796k | 466,060 | 42 d ago |
| Aug 31, 2026 | SOpen-market sale Common Stock10b5-1 | -5,600 | $58.46 | $327k | 460,460 | 42 d ago |
| Sep 1, 2026 | MOption exercise Common Stock10b5-1 | +48,973 | $12.60 | $617k | 509,433 | 42 d ago |
| Sep 1, 2026 | SOpen-market sale Common Stock10b5-1 | -48,973 | $56.39 | $2.8M | 460,460 | 42 d ago |
| Sep 2, 2026 | MOption exercise Common Stock10b5-1 | +11,027 | $12.60 | $139k | 471,487 | 42 d ago |
| Sep 2, 2026 | SOpen-market sale Common Stock10b5-1 | -1,452 | $56.15 | $82k | 470,035 | 42 d ago |
| Sep 2, 2026 | SOpen-market sale Common Stock10b5-1 | -9,575 | $56.77 | $544k | 460,460 | 42 d ago |
| Aug 31, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -13,500 | $0.00 | $0 | 72,007 | 42 d ago |
| Aug 31, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -35,000 | $0.00 | $0 | 79,007 | 42 d ago |
| Aug 31, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -9,271 | $0.00 | $0 | 175,272 | 42 d ago |
| Sep 1, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -48,973 | $0.00 | $0 | 30,034 | 42 d ago |
| Sep 2, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -11,027 | $0.00 | $0 | 19,007 | 42 d ago |
Related signals
Other insiders at Ambiq Micro, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 53Moderate | Ambiq Micro, Inc. | Jeffrey G Winzeler Chief Financial Officer | $380k 5,455 shares | -5% | |
| 49Moderate | Ambiq Micro, Inc. | Scott McLean Hanson Chief Technology Officer | $604k 8,680 shares | -4% | |
| 65Notable | Ambiq Micro, Inc. | Fumihide Esaka Chief Executive Officer | $1.2M 16,560 shares | -4% | |
| 44Moderate | Ambiq Micro, Inc. | Sean Chihhsiang Chen President and COO | $952k 14,007 shares | -12% | |
| 11Weak | Ambiq Micro, Inc. | Scott McLean Hanson Chief Technology Officer | $422k 7,000 shares | -3% | |
| 60Notable | Ambiq Micro, Inc. | Ker Zhang director | $634k 10,000 shares | -33% | |
| 35Weak | Ambiq Micro, Inc. | Fumihide Esaka Chief Executive Officer | $4.0M 63,500 shares | -12% | |
| 29Weak | Ambiq Micro, Inc. | Sean Chihhsiang Chen President and COO | $902k 15,000 shares | -11% | |
| 15Weak | Ambiq Micro, Inc. | Ker Zhang director | $11k 185 shares | -1% | |
| 28Weak | Ambiq Micro, Inc. | Sean Chihhsiang Chen President and COO | $858k 15,000 shares | -11% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.