Fuping Chen is See remarks at ACM Research, Inc. (ACMR). They have made 2 open-market trades across 1 company since 2021, most recently 2025-12-03.
CIK 0001729184
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ACMR | 20,000 | $1.1M |
Shares reported on the most recent Form 4, priced at the 2025-12-04 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.