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Detailed Insider History for:
ACM RESEARCH INC: ACMR
Price: 4/10/24 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$28.61 $34.40 $8.75 $1,748 56 1,785 0.0% 7.2% 60.75% 21.80%
Exch Sector Industry Sub-Industry
NasdaqGM Retail Trade Miscellaneous Retail Retail- Hobby, Toy & Game Shops
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
1y
3
67%
-7%
1
WANG DAVID H
DIR,BO
AS
$2,405,050
87,089
---
3/14/24
$27.51
$28.38
504,018
-14.7
D
10b
3/15/24 - 9:32:10 pm
2
    
 
DUN HAIPING
DIR
AS
$538,376
19,434
---
3/14/24
$27.56
$28.34
855,090
-2.2
D
10b
3/15/24 - 9:32:09 pm
3
1y
4
50%
-10%
1
CHEAV SOTHEARA
O
AS
$284,878
10,000
3/13/24
3/14/24
$27.49
$28.32
100,002
-9.1
D
10b
3/15/24 - 9:32:05 pm
4
    
 
DUN HAIPING
DIR
AS
$455,400
15,000
---
3/8/24
---
$30.36
874,524
-1.7
D
10b
3/12/24 - 9:30:41 pm
5
1y
3
67%
-7%
1
WANG DAVID H
DIR,BO
AS
$2,731,950
90,000
---
3/8/24
---
$30.35
591,107
-13.2
D
10b
3/12/24 - 9:30:30 pm
6
    
 
WANG DAVID H
DIR,BO
OS*
$90,008
2,911
---
3/1/24
---
$30.92
681,107
-0.4
D
---
3/5/24 - 9:33:15 pm
7
1y
4
75%
150%
1
WANG DAVID H
DIR,BO
OE*
$90,000
180,000
---
3/1/24
---
$0.50
684,018
35.7
D
---
3/5/24 - 9:33:15 pm
8
    
 
DUN HAIPING
DIR
OS*
$17,501
566
---
3/1/24
---
$30.92
889,524
-0.1
D
---
3/5/24 - 9:31:13 pm
9
    
 
DUN HAIPING
DIR
OE*
$17,500
35,000
---
3/1/24
---
$0.50
890,090
4.1
D
---
3/5/24 - 9:31:13 pm
10
    
 
FENG LISA
O
OS
$189,000
7,500
---
2/28/24
---
$25.20
50,001
-13.0
D
10b
3/1/24 - 9:32:56 pm
11
    
 
FENG LISA
O
OE
$42,000
7,500
---
2/28/24
---
$5.60
57,501
15.0
D
10b
3/1/24 - 9:32:56 pm
12
1y
3
100%
-31%
1
LIU TRACY
DIR
OS
$315,000
12,500
---
2/28/24
---
$25.20
110,772
-10.1
D
10b
3/1/24 - 9:30:28 pm
13
    
 
LIU TRACY
DIR
OE
$70,000
12,500
---
2/28/24
---
$5.60
123,272
11.3
D
10b
3/1/24 - 9:30:28 pm
14
    
 
MCKECHNIE MARK
O
OS
$220,000
10,000
---
1/12/24
---
$22.00
900
-91.7
D
10b
1/16/24 - 4:15:51 pm
15
    
 
MCKECHNIE MARK
O
OE
$45,500
10,000
---
1/12/24
---
$4.55
10,900
1,111.1
D
10b
1/16/24 - 4:15:51 pm
16
1y
3
100%
-31%
1
LIU TRACY
DIR
AS
$200,000
10,000
---
12/26/23
---
$20.00
110,772
-8.3
D
10b
12/28/23 - 9:02:13 pm
17
    
 
LIU TRACY
DIR
OE
$56,000
10,000
---
12/26/23
---
$5.60
120,772
9.0
D
10b
12/28/23 - 9:02:13 pm
18
    
 
FENG LISA
O
AS
$150,000
7,500
---
12/26/23
---
$20.00
50,001
-13.0
D
10b
12/28/23 - 9:00:24 pm
19
    
 
FENG LISA
O
OE
$42,000
7,500
---
12/26/23
---
$5.60
57,501
15.0
D
10b
12/28/23 - 9:00:24 pm
20
    
 
DUN HAIPING
DIR
AS
$327,474
18,984
---
11/29/23
---
$17.25
855,090
-2.2
D
10b
12/1/23 - 4:15:41 pm
21
1y
3
67%
-7%
1
WANG DAVID H
DIR,BO
AS
$1,452,663
84,776
---
11/29/23
---
$17.13
504,018
-14.4
D
10b
12/1/23 - 4:15:38 pm
22
1y
3
67%
-7%
1
WANG DAVID H
DIR,BO
AS
$1,590,750
90,000
---
11/22/23
$17.67
$17.68
588,794
-13.3
D
10b
11/27/23 - 4:30:25 pm
23
    
 
DUN HAIPING
DIR
AS
$264,900
15,000
---
11/22/23
---
$17.66
874,074
-1.7
D
10b
11/27/23 - 4:24:52 pm
24
1y
3
100%
-31%
1
LIU TRACY
DIR
OS
$268,650
15,000
---
11/20/23
---
$17.91
36,924
-28.9
D
10b
11/22/23 - 4:15:34 pm
25
    
 
LIU TRACY
DIR
OE
$110,400
15,000
---
11/20/23
---
$7.36
51,924
40.6
D
10b
11/22/23 - 4:15:34 pm
26
    
 
WANG DAVID H
DIR,BO
OS*
$90,010
5,224
---
11/14/23
---
$17.23
678,794
-0.8
D
---
11/16/23 - 4:15:35 pm
27
1y
4
75%
150%
1
WANG DAVID H
DIR,BO
OE*
$90,000
180,000
---
11/14/23
---
$0.50
684,018
35.7
D
---
11/16/23 - 4:15:35 pm
28
    
 
DUN HAIPING
DIR
OS*
$17,506
1,016
---
11/14/23
---
$17.23
889,074
-0.1
D
---
11/16/23 - 4:15:29 pm
29
    
 
DUN HAIPING
DIR
OE*
$17,500
35,000
---
11/14/23
---
$0.50
890,090
4.1
D
---
11/16/23 - 4:15:29 pm
30
1y
4
50%
-10%
1
CHEAV SOTHEARA
O
OS
$436,540
26,000
---
11/13/23
---
$16.79
110,002
-19.1
D
10b
11/15/23 - 4:15:22 pm
31
    
 
CHEAV SOTHEARA
O
OE
$129,705
26,000
---
11/13/23
---
$4.62
136,002
23.6
D
10b
11/15/23 - 4:15:22 pm
32
    
 
MCKECHNIE MARK
O
OS
$225,000
11,250
---
10/11/23
---
$20.00
900
-92.6
D
10b
10/13/23 - 4:15:49 pm
33
    
 
MCKECHNIE MARK
O
OE
$51,188
11,250
---
10/11/23
---
$4.55
12,150
1,250.0
D
10b
10/13/23 - 4:15:49 pm
34
1y
3
67%
-7%
1
WANG DAVID H
DIR,BO
AS
$3,130,016
175,116
9/12/23
9/13/23
---
$17.68
504,018
-25.8
D
10b
9/14/23 - 5:00:23 pm
35
    
 
WANG DAVID H
DIR,BO
OS*
$90,012
4,884
---
9/4/23
---
$18.43
679,134
-0.7
D
---
9/6/23 - 9:40:59 pm
36
1y
4
75%
150%
1
WANG DAVID H
DIR,BO
OE*
$90,000
180,000
---
9/4/23
---
$0.50
684,018
35.7
D
---
9/6/23 - 9:40:59 pm
37
    
 
MCKECHNIE MARK
O
OS
$540,000
30,000
---
9/1/23
---
$18.00
900
-97.1
D
10b
9/5/23 - 9:30:31 pm
38
    
 
MCKECHNIE MARK
O
OE
$136,500
30,000
---
9/1/23
---
$4.55
30,900
3,333.3
D
10b
9/5/23 - 9:30:31 pm
39
    
 
CHEN FUPING
O
OS
$1,575,000
105,000
---
8/23/23
---
$15.00
---
All
D
10b
8/25/23 - 5:46:47 pm
40
    
 
CHEN FUPING
O
OE
$111,803
105,000
---
8/23/23
$1.00
$1.77
105,000
New
D
10b
8/25/23 - 5:46:47 pm
41
    
 
DUN HAIPING
DIR
AS
$444,557
32,098
---
8/22/23
---
$13.85
855,090
-3.6
D
10b
8/24/23 - 8:13:17 pm
42
    
 
FENG LISA
O
OS
$337,500
22,500
---
7/3/23
---
$15.00
50,001
-31.0
D
10b
7/5/23 - 6:52:13 pm
43
    
 
FENG LISA
O
OE
$39,825
22,500
---
7/3/23
---
$1.77
72,501
45.0
D
10b
7/5/23 - 6:52:13 pm
44
1y
4
50%
-10%
1
CHEAV SOTHEARA
O
OS
$390,000
39,000
---
6/6/23
---
$10.00
110,002
-26.2
D
10b
6/8/23 - 9:49:19 pm
45
    
 
CHEAV SOTHEARA
O
OE
$191,895
39,000
---
6/6/23
$4.62
$5.33
149,002
35.5
D
10b
6/8/23 - 9:49:19 pm
46
    
 
DUN HAIPING
DIR
AS
$375,000
37,500
---
6/1/23
---
$10.00
887,188
-4.1
D
10b
6/5/23 - 6:26:49 pm
47
    
 
SHANGHAI SCIENCE AND TECHNOLOGY VENTURE CAPITAL \(
BO
3
---
---
---
5/29/23
---
---
3,358,728
---
I
A
7/18/23 - 8:53:41 am
48
    
 
SHANGHAI SCIENCE AND TECHNOLOGY VENTURE CAPITAL \(
BO
3
---
---
---
5/29/23
---
---
3,438,510
---
D
A
7/18/23 - 8:53:41 am
49
    
 
SHANGHAI SCIENCE AND TECHNOLOGY VENTURE CAPITAL \(
BO
3
---
---
---
5/29/23
---
---
3,438,510
---
D
---
6/13/23 - 5:32:34 pm
50
    
 
SHANGHAI SCIENCE AND TECHNOLOGY VENTURE CAPITAL \(
BO
3
---
---
---
5/29/23
---
---
3,358,728
---
I
---
6/13/23 - 5:32:34 pm
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