ACM Research, Inc. engages in the development, manufacture, and sale of single-wafer wet cleaning equipment. It supplies process solutions that semi conductor manufacturers can use in numerous manufacturing steps to remove particles, contaminants and other random defects, and thereby improve product yield. The company tools can be used in fabricating foundry, logic and memory chips including dynamic random-access memory, or DRAM, and 3D NAND-flash memory chips. The company was founded by David H. Wang and Hui Wang in January 1998 and is headquartered in Fremont, CA. |
Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
Wang David H | See Remarks | Mar 14 '24 | Sale | 27.62 | 87,089 | 2,405,050 | 504,018 | Mar 15 09:32 PM | Dun Haiping | Director | Mar 14 '24 | Sale | 27.70 | 19,434 | 538,376 | 855,090 | Mar 15 09:32 PM | Cheav Sotheara | See remarks | Mar 14 '24 | Sale | 27.89 | 5,000 | 139,428 | 100,002 | Mar 15 09:32 PM | Cheav Sotheara | See remarks | Mar 13 '24 | Sale | 29.09 | 5,000 | 145,450 | 105,002 | Mar 15 09:32 PM | Wang David H | See Remarks | Mar 08 '24 | Sale | 30.36 | 90,000 | 2,731,950 | 591,107 | Mar 12 09:30 PM | Dun Haiping | Director | Mar 08 '24 | Sale | 30.36 | 15,000 | 455,400 | 874,524 | Mar 12 09:30 PM | Wang David H | See Remarks | Mar 01 '24 | Option Exercise | 0.50 | 180,000 | 90,000 | 684,018 | Mar 05 09:33 PM | Dun Haiping | Director | Mar 01 '24 | Option Exercise | 0.50 | 35,000 | 17,500 | 890,090 | Mar 05 09:31 PM | Liu Tracy | Director | Feb 28 '24 | Option Exercise | 5.60 | 12,500 | 70,000 | 123,272 | Mar 01 09:30 PM | Feng Lisa | See remarks | Feb 28 '24 | Option Exercise | 5.60 | 7,500 | 42,000 | 57,501 | Mar 01 09:32 PM | Liu Tracy | Director | Feb 28 '24 | Sale | 25.20 | 12,500 | 315,000 | 110,772 | Mar 01 09:30 PM | Feng Lisa | See remarks | Feb 28 '24 | Sale | 25.20 | 7,500 | 189,000 | 50,001 | Mar 01 09:32 PM | McKechnie Mark | See Remarks | Jan 12 '24 | Option Exercise | 4.55 | 10,000 | 45,500 | 10,900 | Jan 16 04:15 PM | McKechnie Mark | See Remarks | Jan 12 '24 | Sale | 22.00 | 10,000 | 220,000 | 900 | Jan 16 04:15 PM | Liu Tracy | Director | Dec 26 '23 | Option Exercise | 5.60 | 10,000 | 56,000 | 120,772 | Dec 28 09:02 PM | Feng Lisa | See remarks | Dec 26 '23 | Option Exercise | 5.60 | 7,500 | 42,000 | 57,501 | Dec 28 09:00 PM | Liu Tracy | Director | Dec 26 '23 | Sale | 20.00 | 10,000 | 200,000 | 110,772 | Dec 28 09:02 PM | Feng Lisa | See remarks | Dec 26 '23 | Sale | 20.00 | 7,500 | 150,000 | 50,001 | Dec 28 09:00 PM | Wang David H | See Remarks | Nov 29 '23 | Sale | 17.14 | 84,776 | 1,452,663 | 504,018 | Dec 01 04:15 PM | Dun Haiping | Director | Nov 29 '23 | Sale | 17.25 | 18,984 | 327,474 | 855,090 | Dec 01 04:15 PM | Wang David H | See Remarks | Nov 22 '23 | Sale | 17.68 | 90,000 | 1,590,750 | 588,794 | Nov 27 04:30 PM | Dun Haiping | Director | Nov 22 '23 | Sale | 17.66 | 15,000 | 264,900 | 874,074 | Nov 27 04:24 PM | Liu Tracy | Director | Nov 20 '23 | Option Exercise | 7.36 | 15,000 | 110,400 | 51,924 | Nov 22 04:15 PM | Liu Tracy | Director | Nov 20 '23 | Sale | 17.91 | 15,000 | 268,650 | 36,924 | Nov 22 04:15 PM | Wang David H | See Remarks | Nov 14 '23 | Option Exercise | 0.50 | 180,000 | 90,000 | 684,018 | Nov 16 04:15 PM | Dun Haiping | Director | Nov 14 '23 | Option Exercise | 0.50 | 35,000 | 17,500 | 890,090 | Nov 16 04:15 PM | Cheav Sotheara | See remarks | Nov 13 '23 | Option Exercise | 4.99 | 26,000 | 129,705 | 136,002 | Nov 15 04:15 PM | Cheav Sotheara | See remarks | Nov 13 '23 | Sale | 16.79 | 26,000 | 436,540 | 110,002 | Nov 15 04:15 PM | McKechnie Mark | See Remarks | Oct 11 '23 | Option Exercise | 4.55 | 11,250 | 51,188 | 12,150 | Oct 13 04:15 PM | McKechnie Mark | See Remarks | Oct 11 '23 | Sale | 20.00 | 11,250 | 225,000 | 900 | Oct 13 04:15 PM | Wang David H | See Remarks | Sep 13 '23 | Sale | 17.68 | 85,116 | 1,504,851 | 504,018 | Sep 14 05:00 PM | Wang David H | See Remarks | Sep 12 '23 | Sale | 18.06 | 90,000 | 1,625,165 | 589,134 | Sep 14 05:00 PM | Wang David H | See Remarks | Sep 04 '23 | Option Exercise | 0.50 | 180,000 | 90,000 | 684,018 | Sep 06 09:40 PM | McKechnie Mark | See Remarks | Sep 01 '23 | Option Exercise | 4.55 | 30,000 | 136,500 | 30,900 | Sep 05 09:30 PM | McKechnie Mark | See Remarks | Sep 01 '23 | Sale | 18.00 | 30,000 | 540,000 | 900 | Sep 05 09:30 PM | Chen Fuping | See remarks | Aug 23 '23 | Option Exercise | 1.06 | 105,000 | 111,803 | 105,000 | Aug 25 05:46 PM | Chen Fuping | See remarks | Aug 23 '23 | Sale | 15.00 | 105,000 | 1,575,000 | 0 | Aug 25 05:46 PM | Dun Haiping | Director | Aug 22 '23 | Sale | 13.85 | 32,098 | 444,557 | 855,090 | Aug 24 08:13 PM | Feng Lisa | See remarks | Jul 03 '23 | Option Exercise | 1.77 | 22,500 | 39,825 | 72,501 | Jul 05 06:52 PM | Feng Lisa | See remarks | Jul 03 '23 | Sale | 15.00 | 22,500 | 337,500 | 50,001 | Jul 05 06:52 PM | Cheav Sotheara | See remarks | Jun 06 '23 | Option Exercise | 4.92 | 39,000 | 191,895 | 149,002 | Jun 08 09:49 PM | Cheav Sotheara | See remarks | Jun 06 '23 | Sale | 10.00 | 39,000 | 390,000 | 110,002 | Jun 08 09:49 PM | Dun Haiping | Director | Jun 01 '23 | Sale | 10.00 | 37,500 | 375,000 | 887,188 | Jun 05 06:26 PM | Dun Haiping | Director | May 22 '23 | Option Exercise | 0.50 | 37,500 | 18,750 | 926,616 | May 24 06:33 PM |
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