Fumihide Esaka
CIK 2078454 · View on SEC EDGAR ↗
First SEC filing: July 29, 2025 · Latest: July 29, 2025
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 14, 2026 | AMBQ | S 10b5-1 | 1,282 | $63.29 | $81,138 | 463,407 Direct | -0.28% | Disposed | -7.9% (price as of 2026-08-20) |
| Aug. 14, 2026 | AMBQ | S 10b5-1 | 10,718 | $64.40 | $690,239 | 452,689 Direct | -2.31% | Disposed | -9.5% (price as of 2026-08-20) |
| Aug. 14, 2026 | AMBQ | S 10b5-1 | 1,500 | $65.26 | $97,890 | 451,189 Direct | -0.33% | Disposed | -10.7% (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 14, 2026 | AMBQ | Stock Option (Right to Buy) | Common Stock (13,500) | $8.12 | Feb. 20, 2029 | 13,500 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 29, 2025 | AMBQ | Common Stock | 17,006 | Direct |
| July 29, 2025 | AMBQ | Stock Option (Right to Buy)→ Common Stock (53,660) | 53,660 | Direct |
| July 29, 2025 | AMBQ | Stock Option (Right to Buy)→ Common Stock (204,470) | 204,470 | Direct |
| July 29, 2025 | AMBQ | Stock Option (Right to Buy)→ Common Stock (121,943) | 121,943 | Direct |
| July 29, 2025 | AMBQ | Stock Option (Right to Buy)→ Common Stock (191,144) | 191,144 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $832,166 | $513,800 | — | — | — | — | $179,298 | $6,271,304 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.