Insider · CIK 0001721580
David H Wang
officerdirectorowner
Files at ACMR (ACM Research, Inc.). First filing Nov 26, 2024, latest Sep 10, 2026.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 9
$0 bought, $33M sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
ACMR: ACM Research, Inc.
ACMROct 9, 2026 · close 71.37
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 10Weak | ACM Research, Inc. | $11M 140,000 shares | -16% | +185% from low-39% from high | |
| 25Weak | ACM Research, Inc. | $5.2M 110,000 shares | -13% | +161% from low-32% from high | |
| 25Weak | ACM Research, Inc. | $4.4M 130,000 shares | -15% | +141% from low-22% from high | |
| 25Weak | ACM Research, Inc. | $3.5M 130,000 shares | -18% | +90% from low-16% from high | |
| 18Weak | ACM Research, Inc. | $3.0M 130,000 shares | -18% | +63% from low-23% from high | |
| 40Moderate | ACM Research, Inc. | $3.5M 131,250 shares | -16% | +92% from low-2% from high | |
| 28Weak | ACM Research, Inc. | $981k 56,250 shares | -9% | - | |
| 28Weak | ACM Research, Inc. | $1.0M 56,250 shares | -8% | - | |
| 28Weak | ACM Research, Inc. | $1.1M 56,250 shares | -7% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 8, 2026 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +70,000 | $1.00 | $70k | 872,708 | 32 d ago |
| Sep 8, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -4,803 | $75.99 | $365k | 867,905 | 32 d ago |
| Sep 8, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -51,374 | $77.15 | $4.0M | 816,531 | 32 d ago |
| Sep 8, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -12,323 | $78.08 | $962k | 804,208 | 32 d ago |
| Sep 8, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -1,500 | $78.57 | $118k | 802,708 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +70,000 | $1.00 | $70k | 872,708 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -33,493 | $73.80 | $2.5M | 839,215 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -18,934 | $74.67 | $1.4M | 820,281 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -11,666 | $75.58 | $882k | 808,615 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -4,807 | $76.73 | $369k | 803,808 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -1,100 | $77.59 | $85k | 802,708 | 32 d ago |
| Sep 8, 2026 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -70,000 | $0.00 | $0 | 200,000 | 32 d ago |
| Sep 9, 2026 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -70,000 | $0.00 | $0 | 130,000 | 32 d ago |
| Mar 11, 2026 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +60,000 | $1.00 | $60k | 862,708 | Mar 13, 2026 |
| Mar 11, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -55,373 | $47.89 | $2.7M | 807,335 | Mar 13, 2026 |
| Mar 11, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -4,627 | $48.34 | $224k | 802,708 | Mar 13, 2026 |
| Mar 12, 2026 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +50,000 | $1.00 | $50k | 852,708 | Mar 13, 2026 |
| Mar 12, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -10,561 | $44.92 | $474k | 842,147 | Mar 13, 2026 |
| Mar 12, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -38,737 | $45.74 | $1.8M | 803,410 | Mar 13, 2026 |
| Mar 12, 2026 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -702 | $46.57 | $33k | 802,708 | Mar 13, 2026 |
| Mar 11, 2026 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -60,000 | $0.00 | $0 | 420,002 | Mar 13, 2026 |
| Mar 12, 2026 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -50,000 | $0.00 | $0 | 370,002 | Mar 13, 2026 |
| Feb 4, 2026 | ACMR ACM Research, Inc. | AGrant or award Stock Optionderivative | +545,400 | $0.00 | $0 | 1,636,197 | Feb 6, 2026 |
| Dec 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +70,000 | $1.00 | $70k | 872,708 | Dec 5, 2025 |
| Dec 3, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -68,800 | $33.05 | $2.3M | 803,908 | Dec 5, 2025 |
| Dec 3, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -1,200 | $33.56 | $40k | 802,708 | Dec 5, 2025 |
| Dec 4, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +60,000 | $1.00 | $60k | 862,708 | Dec 5, 2025 |
| Dec 4, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -19,817 | $33.52 | $664k | 842,891 | Dec 5, 2025 |
| Dec 4, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -40,183 | $34.42 | $1.4M | 802,708 | Dec 5, 2025 |
| Dec 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -70,000 | $0.00 | $0 | 540,002 | Dec 5, 2025 |
| Dec 4, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -60,000 | $0.00 | $0 | 480,002 | Dec 5, 2025 |
| Oct 27, 2025 | ACMR ACM Research, Inc. | AGrant or award Stock Optionderivative | +545,400 | $0.00 | $0 | 545,400 | Oct 29, 2025 |
| Sep 8, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock | +130,000 | $1.00 | $130k | 802,708 | Sep 30, 2025 |
| Sep 8, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative | -130,000 | $0.00 | $0 | 610,002 | Sep 30, 2025 |
| Sep 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +70,000 | $1.00 | $70k | 742,708 | Sep 5, 2025 |
| Sep 3, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -66,057 | $26.73 | $1.8M | 676,651 | Sep 5, 2025 |
| Sep 3, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -3,943 | $27.31 | $108k | 672,708 | Sep 5, 2025 |
| Sep 4, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +60,000 | $1.00 | $60k | 732,708 | Sep 5, 2025 |
| Sep 4, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -60,000 | $26.44 | $1.6M | 672,708 | Sep 5, 2025 |
| Sep 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -70,000 | $0.00 | $0 | 800,002 | Sep 5, 2025 |
| Sep 4, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -60,000 | $0.00 | $0 | 740,002 | Sep 5, 2025 |
| May 21, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +70,000 | $1.00 | $70k | 742,708 | May 23, 2025 |
| May 21, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -69,992 | $23.60 | $1.7M | 672,716 | May 23, 2025 |
| May 21, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -8 | $24.04 | $192 | 672,708 | May 23, 2025 |
| May 22, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock10b5-1 | +60,000 | $1.00 | $60k | 732,708 | May 23, 2025 |
| May 22, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -60,000 | $22.63 | $1.4M | 672,708 | May 23, 2025 |
| May 21, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -70,000 | $0.00 | $0 | 930,002 | May 23, 2025 |
| May 22, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative10b5-1 | -60,000 | $0.00 | $0 | 870,002 | May 23, 2025 |
| Mar 11, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -56,250 | $26.57 | $1.5M | 747,708 | Mar 13, 2025 |
| Mar 12, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -37,500 | $27.42 | $1.0M | 710,208 | Mar 13, 2025 |
| Mar 13, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -36,481 | $27.29 | $996k | 673,727 | Mar 13, 2025 |
| Mar 13, 2025 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -1,019 | $27.65 | $28k | 672,708 | Mar 13, 2025 |
| Mar 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock | +210,000 | $0.50 | $105k | 808,006 | Mar 5, 2025 |
| Mar 3, 2025 | ACMR ACM Research, Inc. | FTax withholding Class A Common Stock | -4,048 | $25.94 | $105k | 803,958 | Mar 5, 2025 |
| Mar 3, 2025 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative | -210,000 | $0.00 | $0 | 0 | Mar 5, 2025 |
| Nov 29, 2024 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -56,250 | $17.44 | $981k | 598,006 | Dec 3, 2024 |
| Nov 26, 2024 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -46,766 | $17.80 | $832k | 663,740 | Nov 29, 2024 |
| Nov 26, 2024 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -9,484 | $18.31 | $174k | 654,256 | Nov 29, 2024 |
| Nov 22, 2024 | ACMR ACM Research, Inc. | SOpen-market sale Class A Common Stock10b5-1 | -56,250 | $19.08 | $1.1M | 710,506 | Nov 26, 2024 |
| Nov 14, 2024 | ACMR ACM Research, Inc. | MOption exercise Class A Common Stock | +270,000 | $0.50 | $135k | 774,018 | Nov 18, 2024 |
| Nov 14, 2024 | ACMR ACM Research, Inc. | FTax withholding Class A Common Stock | -7,262 | $18.59 | $135k | 766,756 | Nov 18, 2024 |
| Nov 14, 2024 | ACMR ACM Research, Inc. | MOption exercise Stock Optionderivative | +270,000 | $0.00 | $0 | 210,000 | Nov 18, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.