Updated Jul 16, 2026
Esaka Fumihide has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $4.20M.
Fumihide Esaka is the Chief Executive Officer of Ambiq Micro, Inc., a company specializing in ultra-low power semiconductor solutions. He has played a key role in leading the company's innovative technology development in power optimization.
| Role | Insider |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-18 | AMBQ | Ambiq Micro, Inc. | M — Option exercise | 14.5K | $12.60 | $183K |
| 2026-05-18 | AMBQ | Ambiq Micro, Inc. | M — Option exercise | 45.5K | $8.12 | $369K |
| 2026-05-18 | AMBQ | Ambiq Micro, Inc. | S — Open-market sale | 60.0K | $70.02 | $4.20M |
| 2026-05-18 | AMBQ | Ambiq Micro, Inc. | M — Option exercise | 60.0K | $8.12 | $487K |
| 2026-04-02 | AMBQ | Ambiq Micro, Inc. | A — Grant or award | 160.6K | $0.00 | |
| 2026-03-10 | AMBQ | Ambiq Micro, Inc. | A — Grant or award | 160.6K | $0.00 | |
| 2026-02-11 | AMBQ | Ambiq Micro, Inc. | M — Option exercise | 53.7K | $5.88 | $316K |
| 2025-10-02 | AMBQ | Ambiq Micro, Inc. | A — Grant or award | 159.9K | $0.00 |
Fumihide Esaka is the Chief Executive Officer of Ambiq Micro, Inc., a company specializing in ultra-low power semiconductor solutions. He has played a key role in leading the company's innovative technology development in power optimization.…
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 1 open-market sales ($4.20M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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