Form 4 for ACMR ACM Research, Inc.
Accepted 2026-03-09 00:00:00 ET · period of report 2026-03-05 · accession 0001140361-26-008480 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DT | 2026-03-09 | 2026-03-05 | ACMR | Pappis Charles C | Dir | S - Sale+OE | $50.09 | -5,000 | 0 | -100% | -$250.5K |
| DT | 2026-03-09 | 2026-03-05 | ACMR | Pappis Charles C | Dir | M - OptEx | $29.18 | +5,000 | 5,000 | New | +$145.9K |
| DT | 2026-03-09 | 2026-03-05 | ACMR | Pappis Charles C | Dir | M - OptEx | $0.00 | -5,000 | 5,000 | -50% | $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 | Class A Common Stock | 2026-03-05 | S | D | 5,000 | $50.09 | 0 | D | — | — | |
| 2 | Common | Class A Common Stock | 2026-03-05 | M | A | 5,000 | $29.18 | 5,000 | D | — | — | |
| 3 | Derivative | Stock Option | 2026-03-05 | M | D | 5,000 | $0.00 | 5,000 | D | $29.18 · — to 2035-03-14 | 5,000 Class A Common Stock | (F3) The option is fully vested and exercisable. |