Lisa Feng is See remarks at ACM Research, Inc. (ACMR). They have made 4 open-market trades across 1 company since 2020, most recently 2026-03-06.
CIK 0001779777
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 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ACMR | 65,001 | $2.9M |
Shares reported on the most recent Form 4, priced at the 2026-03-09 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ACMR | SELL | 2026-03-05 | 2026-03-09 | $48.04 | $1.4M | -1.2% | -2.2% | +70.3% |
| ACMR | SELL · 10b5-1 | 2025-11-12 | 2025-11-14 | $33.27 | $2.0M | +4.3% | +19.7% | +103.4% |
| ACMR | SELL · 10b5-1 | 2025-07-07 | 2025-07-09 | $28.00 | $420K | +3.6% | -18.4% | +37.9% |
| ACMR | SELL · 10b5-1 | 2025-06-24 | 2025-06-26 | $26.00 | $390K | +10.0% | +20.9% | +46.2% |
| ACMR | SELL · 10b5-1 | 2024-02-28 | 2024-03-01 | $25.20 | $189K | -14.3% | -9.7% | -33.4% |
| ACMR | SELL · 10b5-1 | 2023-12-26 | 2023-12-28 | $20.00 | $150K | +6.0% | -5.8% | +43.9% |
| ACMR | SELL | 2023-07-03 | 2023-07-05 | $15.00 | $338K | +0.3% | -7.0% | +27.2% |
| ACMR | SELL | 2023-03-09 | 2023-03-13 | $12.38 | $510K | -5.6% | -13.1% | -13.3% |
| ACMR | SELL | 2020-09-16 | 2020-09-18 | $72.30 | $1.1M | -2.0% | +2.3% | +5.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.