ACM Research, Inc. (ACMR)

Latest Insider Confidence Score

2026Q1

44.5
Bearish

Company insider confidence (by quarter)

2017Q4 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Shanghai Science & Technology Venture Capital (Group) Co., Ltd. 10% Owner 6,797,238 Jul 18, 2023
Shanghai Pudong Science & Technology Investment Group Co., Ltd. 10% Owner 6,797,238 Jul 18, 2023
Wang David H Officer 2,428,550 Dec 5, 2025
Xing Xiao Director 2,338,510 Oct 8, 2024
Xiang Yinan Director 1,146,170 Aug 24, 2021

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 4, 2026 Feb 6, 2026 Wang David H Officer Neutral 52.5 - 0.00% -
Dec 4, 2025 Dec 8, 2025 McKechnie Mark Officer Sell 5.0 -31,250 -89.42% $1.1M
Dec 3, 2025 Dec 5, 2025 Wang David H Officer Sell 32.5 -130,000 -3.00% $4.4M
Dec 2, 2025 Dec 4, 2025 Chen Fuping Officer Sell 5.0 -120,000 -99.75% $4M
Nov 12, 2025 Nov 14, 2025 Dun Haiping Director Neutral 27.5 -755,090 -50.00% -
Nov 12, 2025 Nov 14, 2025 Feng Lisa Officer Sell 12.5 -30,000 -23.08% $998K
Oct 27, 2025 Oct 29, 2025 Wang David H Officer Neutral 52.5 - 0.00% -
Sep 8, 2025 Sep 30, 2025 Wang David H Officer Neutral 52.5 - 0.00% -
Sep 17, 2025 Sep 19, 2025 Liu Tracy Director Sell 22.5 -15,000 -11.93% $495K
Sep 18, 2025 Sep 19, 2025 Wang Jian Officer Sell 20.0 -30,000 -10.59% $1.1M
Sep 18, 2025 Sep 19, 2025 Cheav Sotheara Officer Sell 26.3 -10,000 -9.09% $350K
Sep 3, 2025 Sep 5, 2025 Wang David H Officer Sell 32.5 -130,000 -4.20% $3.5M
Aug 22, 2025 Aug 26, 2025 Cheav Sotheara Officer Sell 22.5 -11,152 -10.03% $334.6K
Aug 22, 2025 Aug 26, 2025 Wang Jian Officer Sell 20.0 -60,000 -10.59% $1.9M
Aug 12, 2025 Aug 14, 2025 Pappis Charles C Director Neutral 52.5 - 0.00% -
Aug 12, 2025 Aug 14, 2025 Liu Tracy Director Neutral 52.5 - 0.00% -
Aug 12, 2025 Aug 14, 2025 Dun Haiping Director Neutral 52.5 - 0.00% -
Jul 15, 2025 Jul 17, 2025 Liu Tracy Director Sell 22.5 -15,000 -11.93% $450K
Jul 7, 2025 Jul 9, 2025 Feng Lisa Officer Sell 12.5 -15,000 -23.08% $420K
Jun 24, 2025 Jun 26, 2025 Feng Lisa Officer Sell 12.5 -15,000 -23.08% $390K
May 21, 2025 May 23, 2025 Wang David H Officer Sell 32.5 -130,000 -4.20% $3M
Mar 15, 2025 May 21, 2025 Pappis Charles C Director Neutral 52.5 - 0.00% -
May 21, 2025 Pappis Charles C Director Neutral 52.5 - 0.00% -
May 14, 2025 May 16, 2025 McKechnie Mark Officer Sell 7.5 -15,000 -94.34% $378.3K
Mar 17, 2025 Mar 19, 2025 Hu Chenming Director Sell 5.0 -163,308 -62.02% $4.9M
Mar 14, 2025 Mar 18, 2025 Dun Haiping Director Sell 42.5 -9,518 -1.10% $276K
Mar 12, 2025 Mar 14, 2025 McKechnie Mark Officer Sell 7.5 -15,000 -94.34% $411.3K
Mar 11, 2025 Mar 13, 2025 Wang David H Officer Sell 23.8 -131,250 -7.50% $3.5M
Mar 10, 2025 Mar 12, 2025 Dun Haiping Director Sell 42.5 -15,001 -1.71% $398.1K
Mar 3, 2025 Mar 5, 2025 Dun Haiping Director Sell 51.3 -482 -0.05% $12.5K
Mar 3, 2025 Mar 5, 2025 Wang David H Officer Sell 40.0 -4,048 -0.23% $105K
Feb 6, 2025 Feb 10, 2025 Cheav Sotheara Officer Sell 17.5 -22,598 -18.43% $519.8K
Feb 6, 2025 Feb 10, 2025 McKechnie Mark Officer Sell 7.5 -15,000 -94.34% $330K
Nov 29, 2024 Dec 3, 2024 Dun Haiping Director Sell 38.8 -19,058 -2.18% $332.2K
Nov 29, 2024 Dec 3, 2024 Wang David H Officer Sell 35.0 -56,250 -3.52% $981K
Nov 26, 2024 Nov 29, 2024 Wang David H Officer Sell 32.5 -56,250 -3.40% $1M
Nov 22, 2024 Nov 26, 2024 Dun Haiping Director Sell 42.5 -15,000 -1.69% $286.8K
Nov 22, 2024 Nov 26, 2024 Wang David H Officer Sell 32.5 -56,250 -3.28% $1.1M
Nov 14, 2024 Nov 18, 2024 Dun Haiping Director Sell 51.3 -942 -0.11% $17.5K
Nov 14, 2024 Nov 18, 2024 Wang David H Officer Sell 40.0 -7,262 -0.42% $135K
Oct 4, 2024 Oct 8, 2024 Shanghai Science & Technology Venture Capital (Group) Co., Ltd. 10% Owner Sell 12.5 -1,065,396 -15.75% $23.5M
Oct 4, 2024 Oct 8, 2024 Xing Xiao Director Sell 2.5 -1,065,396 -31.30% $23.5M
Oct 4, 2024 Oct 8, 2024 McKechnie Mark Officer Sell 7.5 -16,516 -94.83% $363.4K
Oct 1, 2024 Oct 3, 2024 Shanghai Science & Technology Venture Capital (Group) Co., Ltd. 10% Owner Sell 45.0 -34,604 -0.51% $693.9K
Oct 1, 2024 Oct 3, 2024 Xing Xiao Director Sell 42.5 -34,604 -1.01% $693.9K
Sep 21, 2024 Sep 24, 2024 Chen Fuping Officer Neutral 52.5 - 0.00% -
Aug 29, 2024 Sep 3, 2024 Dun Haiping Director Sell 38.8 -19,097 -2.18% $345.3K
Aug 22, 2024 Aug 26, 2024 Dun Haiping Director Sell 42.5 -15,000 -1.69% $297.8K
Aug 12, 2024 Aug 20, 2024 Liu Tracy Director Neutral 52.5 - 0.00% -
Aug 12, 2024 Aug 20, 2024 Dun Haiping Director Neutral 52.5 - 0.00% -
Aug 12, 2024 Aug 20, 2024 Hu Chenming Director Neutral 52.5 - 0.00% -
Aug 14, 2024 Aug 16, 2024 Dun Haiping Director Sell 51.3 -903 -0.10% $17.5K
Jun 27, 2024 Jul 1, 2024 Dun Haiping Director Neutral 27.5 -400,000 -25.72% -
Jun 10, 2024 Jun 12, 2024 Wang Jian Officer Sell 27.5 -60,000 -7.31% $1.4M
Jun 6, 2024 Jun 7, 2024 Wang Jian Officer Sell 20.0 -60,000 -10.59% $1.3M
Jun 6, 2024 Jun 7, 2024 McKechnie Mark Officer Sell 7.5 -20,000 -91.74% $458.4K
May 29, 2024 May 31, 2024 Dun Haiping Director Sell 38.8 -19,239 -2.20% $435.4K
May 29, 2024 May 31, 2024 Wang David H Officer Sell 27.5 -86,090 -5.61% $1.9M
May 22, 2024 May 24, 2024 Wang David H Officer Sell 27.5 -90,000 -5.54% $2.1M
May 22, 2024 May 24, 2024 Dun Haiping Director Sell 42.5 -15,000 -1.69% $343.2K
May 14, 2024 May 16, 2024 Wang David H Officer Sell 40.0 -3,910 -0.24% $90K
May 14, 2024 May 16, 2024 Dun Haiping Director Sell 51.3 -761 -0.09% $17.5K
Mar 14, 2024 Mar 15, 2024 Wang David H Officer Sell 27.5 -87,089 -5.67% $2.4M
Mar 14, 2024 Mar 15, 2024 Dun Haiping Director Sell 38.8 -19,434 -2.22% $538.4K
Mar 13, 2024 Mar 15, 2024 Cheav Sotheara Officer Sell 26.3 -10,000 -9.09% $284.9K
Mar 8, 2024 Mar 12, 2024 Dun Haiping Director Sell 42.5 -15,000 -1.69% $455.4K
Mar 8, 2024 Mar 12, 2024 Wang David H Officer Sell 27.5 -90,000 -5.53% $2.7M
Mar 1, 2024 Mar 5, 2024 Wang David H Officer Sell 47.5 -2,911 -0.18% $90K
Mar 1, 2024 Mar 5, 2024 Dun Haiping Director Sell 51.3 -566 -0.06% $17.5K
Feb 28, 2024 Mar 1, 2024 Feng Lisa Officer Sell 25.0 -7,500 -13.04% $189K
Feb 28, 2024 Mar 1, 2024 Liu Tracy Director Sell 22.5 -12,500 -10.14% $315K
Jan 12, 2024 Jan 16, 2024 McKechnie Mark Officer Sell 10.0 -10,000 -91.74% $220K
Dec 26, 2023 Dec 28, 2023 Liu Tracy Director Sell 28.8 -10,000 -8.28% $200K
Dec 26, 2023 Dec 28, 2023 Feng Lisa Officer Sell 25.0 -7,500 -13.04% $150K
Nov 29, 2023 Dec 1, 2023 Dun Haiping Director Sell 38.8 -18,984 -2.17% $327.5K
Nov 29, 2023 Dec 1, 2023 Wang David H Officer Sell 27.5 -84,776 -5.52% $1.5M
Nov 22, 2023 Nov 27, 2023 Wang David H Officer Sell 27.5 -90,000 -5.54% $1.6M
Nov 22, 2023 Nov 27, 2023 Dun Haiping Director Sell 42.5 -15,000 -1.69% $264.9K
Nov 20, 2023 Nov 22, 2023 Liu Tracy Director Sell 7.5 -15,000 -28.89% $268.7K
Nov 14, 2023 Nov 16, 2023 Wang David H Officer Sell 40.0 -5,224 -0.32% $90K
Nov 14, 2023 Nov 16, 2023 Dun Haiping Director Sell 51.3 -1,016 -0.11% $17.5K
Nov 13, 2023 Nov 15, 2023 Cheav Sotheara Officer Sell 17.5 -26,000 -19.12% $436.5K
Oct 11, 2023 Oct 13, 2023 McKechnie Mark Officer Sell 10.0 -11,250 -92.59% $225K
Sep 12, 2023 Sep 14, 2023 Wang David H Officer Sell 20.0 -175,116 -10.78% $3.1M
Sep 4, 2023 Sep 6, 2023 Wang David H Officer Sell 40.0 -4,884 -0.30% $90K
Sep 1, 2023 Sep 5, 2023 McKechnie Mark Officer Sell 7.5 -30,000 -97.09% $540K
Aug 23, 2023 Aug 25, 2023 Chen Fuping Officer Sell 5.0 -105,000 -100.00% $1.6M
Aug 22, 2023 Aug 24, 2023 Dun Haiping Director Sell 35.0 -32,098 -3.62% $444.6K
Aug 10, 2023 Aug 21, 2023 Dun Haiping Director Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Wang David H Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 McKechnie Mark Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Liu Tracy Director Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Xing Xiao Director Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Feng Lisa Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Hu Chenming Director Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 21, 2023 Cheav Sotheara Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 14, 2023 Dun Haiping Director Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 14, 2023 Cheav Sotheara Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 14, 2023 Feng Lisa Officer Neutral 52.5 - 0.00% -
Aug 10, 2023 Aug 14, 2023 Wang David H Officer Neutral 52.5 - 0.00% -