Form 4 for AMBQ Ambiq Micro, Inc.
Accepted 2026-02-10 00:00:00 ET · period of report 2025-10-07 · accession 0002078454-26-000002 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-02-10 | 2025-10-07 | AMBQ | Esaka Fumihide | CEO, Dir | M - OptEx | $5.88 | +53.7K | 230.6K | +30% | +$315.5K |
| D | 2026-02-10 | 2025-10-07 | AMBQ | Esaka Fumihide | CEO, Dir | M - OptEx | $0.00 | -53.7K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-10-07 | M | A | 53,660 | $5.88 | 230,573 | D | — | — | |
| 2 | Derivative | Stock Option (Right to Buy) | 2025-10-07 | M | D | 53,660 | $0.00 | 0 | D | $5.88 · — to 2026-01-11 | 53,660 Common Stock | (F1) 1/4 of the shares subject to the option vested on December 1, 2016, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service. The shares subject to this option are early exercisable, subject to the Issuer's right to repurchase. |