Form 4 for AMBQ Ambiq Micro, Inc.
Accepted 2026-05-18 18:12:58 ET · period of report 2026-05-14 · accession 0001312143-26-000006 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-05-18 18:12 | 2026-05-14+ | AMBQ | Winzeler Jeffrey G | CFO | M - OptEx | $16.80 | +32.0K | 100.3K | +47% | +$536.8K |
| DM | 2026-05-18 18:12 | 2026-05-14 | AMBQ | Winzeler Jeffrey G | CFO | S - Sale+OE | $69.90 | -26.0K | 94.4K | -22% | -$1.82M |
| DM | 2026-05-18 18:12 | 2026-05-14+ | AMBQ | Winzeler Jeffrey G | CFO | M - OptEx | $0.00 | -32.0K | 110.9K | -22% | $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 | 2026-05-14 | M | A | 26,000 | $16.80 | 120,395 | D | — | — | |
| 2 | Common | Common Stock | 2026-05-14 | S | D | 25,918 | $69.90 | 94,477 | D | — | — | (F1) The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.61 to $70.435 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. |
| 3 | Common | Common Stock | 2026-05-14 | S | D | 82 | $70.65 | 94,395 | D | — | — | |
| 4 | Common | Common Stock | 2026-05-15 | M | A | 5,952 | $16.80 | 100,347 | D | — | — | |
| 5 | Derivative | Stock Option (Right to Buy) | 2026-05-14 | M | D | 26,000 | $0.00 | 116,857 | D | $16.80 · — to 2035-06-09 | 26,000 Common Stock | (F2) 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. |
| 6 | Derivative | Stock Option (Right to Buy) | 2026-05-15 | M | D | 5,952 | $0.00 | 110,905 | D | $16.80 · — to 2035-06-09 | 5,952 Common Stock | (F2) 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. |