Form 4/A for AMPX Amprius Technologies, Inc.
Accepted 2026-05-07 16:53:21 ET · period of report 2025-12-19 · accession 0002067233-26-000004 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 2026-05-07 16:53 | 2025-12-19 | AMPX | Stepien Thomas M | CEO, Dir | A - Grant | $0.00 | +200.0K | 760.0K | +36% | $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 | 2025-12-19 | A | A | 200,000 | $0.00 | 760,000 | D | — | — | (F1) This Form 4/A is filed solely to correct the vesting schedule of the restricted stock units of the reporting person reported in the original filing. 2/16th of the shares subject to the award will vest on May 20, 2026 and 1/16th of the shares subject to the award will vest quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on November 20, 2029. |