Esaka Fumihideinsider trades
In SEC Form 4 filings, Esaka Fumihide is listed as Chief Executive Officer of Ambiq Micro, Inc. (AMBQ). In the last 90 days, Esaka Fumihide sold $11.56M of Ambiq Micro, Inc. (AMBQ) on the open market and bought none. 18 of the 21 sales were reported under a 10b5-1 trading plan.
Companies and roles
| Company | Role | Transactions | Last filed |
|---|---|---|---|
| AMBQAmbiq Micro, Inc. | Chief Executive Officer | 37 | Oct 16 |
Cluster buys
No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).
Form 4 historysince 2026-09-02
| Company | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | M | 5,000 | $8.12 | $40,600 | 448,900 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | S | 500 | $49.13 | Sale −$24,567 | 448,400 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | S | 500 | $50.02 | Sale −$25,011 | 447,900 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | S | 2,800 | $51.15 | Sale −$143,214 | 445,100 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | S | 1,200 | $51.85 | Sale −$62,226 | 443,900 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 15 | Oct 16 | M · derivative | 5,000 | $8.12 | $40,600 | 53,507 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 7,113 | $69.11 | Sale −$491,567 | 453,347 | No | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 8,585 | $69.77 | Sale −$598,994 | 444,762 | No | Form 4 |
| AMBQAmbiq Micro, Inc. | Oct 2 | Oct 6 | S | 862 | $71.86 | Sale −$61,943 | 443,900 | No | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 15 | Sep 15 | M | 13,500 | $8.12 | $109,620 | 473,960 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 15 | Sep 15 | S | 3,785 | $59.56 | Sale −$225,444 | 470,175 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 15 | Sep 15 | S | 9,615 | $60.55 | Sale −$582,171 | 460,560 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 15 | Sep 15 | S | 100 | $61.00 | Sale −$6,100 | 460,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 15 | Sep 15 | M · derivative | 13,500 | $8.12 | $109,620 | 58,507 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 11 | Sep 15 | M | 50,000 | $12.60 | $630,000 | 510,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 11 | Sep 15 | S | 42,083 | $63.27 | Sale −$2,662,427 | 468,377 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 11 | Sep 15 | S | 7,917 | $63.86 | Sale −$505,566 | 460,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 11 | Sep 15 | M · derivative | 19,007 | $12.60 | $239,488 | not reported | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 11 | Sep 15 | M · derivative | 30,993 | $12.60 | $390,512 | 144,279 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 2 | Sep 2 | M | 11,027 | $12.60 | $138,940 | 471,487 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 2 | Sep 2 | S | 1,452 | $56.15 | Sale −$81,534 | 470,035 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 2 | Sep 2 | S | 9,575 | $56.77 | Sale −$543,574 | 460,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 2 | Sep 2 | M · derivative | 11,027 | $12.60 | $138,940 | 19,007 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 1 | Sep 2 | M | 48,973 | $12.60 | $617,060 | 509,433 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 1 | Sep 2 | S | 48,973 | $56.39 | Sale −$2,761,534 | 460,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Sep 1 | Sep 2 | M · derivative | 48,973 | $12.60 | $617,060 | 30,034 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | M | 13,500 | $8.12 | $109,620 | 464,689 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 5,899 | $56.87 | Sale −$335,453 | 458,790 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 5,501 | $57.75 | Sale −$317,709 | 453,289 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 2,100 | $58.52 | Sale −$122,889 | 451,189 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | M | 44,271 | $12.60 | $557,815 | 495,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 15,600 | $56.81 | Sale −$886,219 | 479,860 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 13,800 | $57.70 | Sale −$796,277 | 466,060 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | S | 5,600 | $58.46 | Sale −$327,359 | 460,460 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | M · derivative | 13,500 | $8.12 | $109,620 | 72,007 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | M · derivative | 35,000 | $12.60 | $441,000 | 79,007 | Yes | Form 4 |
| AMBQAmbiq Micro, Inc. | Aug 31 | Sep 2 | M · derivative | 9,271 | $12.60 | $116,815 | 175,272 | Yes | Form 4 |
Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.