Fumihide Esaka
CIK 2078454 · Chief Executive Officer · last filed 2026-05-18
Fumihide Esaka is a Chief Executive Officer who has filed 5 SEC Form 4 insider transactions across 1 company since 2025. The most recent filing, for AMBQ, was dated May 18, 2026. Across all open-market trades the lifetime net is −$4.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $32.9M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$32.92M
1
5
-$4.20M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AMBQ | Chief Executive Officer | 436,652 | $75.40 | $32.92M | -$4.20M | 5 | 2026-05-18 |
Recent Filings
5 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-18 | AMBQ | Mixed | +60,000 | -$3.16M | EDGAR |
| 2026-04-02 | AMBQ | Grant (A) | +160,616 | $0 | EDGAR |
| 2026-03-10 | AMBQ | Grant (A) | +160,616 | $0 | EDGAR |
| 2026-02-10 | AMBQ | Exer (M) | +53,660 | $315.5K | EDGAR |
| 2025-10-06 | AMBQ | Grant (A) | +159,907 | $0 | EDGAR |