Insider trading

Period: 120 months Stock: ACMR Minimum amount: $1M × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

61 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

61 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

61 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

61 decisions over 120 months Remove this filter
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
61 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
61 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

61 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
9 Sep 2026
Wang David H See Remarks
Sold on a plan 5×
$5.22M 70,000 at 74.59
8.0%
Planned (10b5-1)
8 Sep 2026
Wang David H See Remarks
Sold on a plan 4×
$5.41M 70,000 at 77.26
8.0%
Planned (10b5-1)
20 Aug 2026
McKechnie Mark See Remarks
Sold on a plan 3×
$4.26M 55,199 at 77.27
98.4%
Sold half or more
4 Jun 2026
Wang David H See Remarks
Sold on a plan 5×
$3.43M 40,002 at 85.80
4.7%
Planned (10b5-1)
4 Jun 2026
Cheav Sotheara See remarks
Sold on a plan 3×
$1.14M 13,351 at 85.15
11.8%
Planned (10b5-1)
3 Jun 2026
Wang David H See Remarks
Sold on a plan 6×
$5.40M 60,000 at 90.05
7.0%
Planned (10b5-1)
12 Mar 2026
McKechnie Mark See Remarks
Sold on a plan 6×
$4.49M 98,551 at 45.58
99.1%
Sold half or more
12 Mar 2026
Wang David H See Remarks
Sold on a plan 3×
$2.28M 50,000 at 45.58
5.9%
Planned (10b5-1)
11 Mar 2026
Wang David H See Remarks
Sold on a plan 2×
$2.88M 60,000 at 47.92
7.0%
Planned (10b5-1)
10 Mar 2026
Liu Tracy Director
Sold on a plan 2×
$2.13M 45,000 at 47.38
28.9%
Planned (10b5-1)
4 Dec 2025
Wang David H See Remarks
Sold on a plan 2×
$2.05M 60,000 at 34.12
7.0%
Planned (10b5-1)
3 Dec 2025
Wang David H See Remarks
Sold on a plan 2×
$2.31M 70,000 at 33.06
8.0%
Planned (10b5-1)
2 Dec 2025
Chen Fuping See remarks
Sold on a plan
$3.32M 100,000 at 33.20
100%
Sold half or more
18 Sep 2025
Wang Jian See remarks
Sold on a plan
$1.05M 30,000 at 35.00
10.6%
Planned (10b5-1)
4 Sep 2025
Wang David H See Remarks
Sold on a plan
$1.59M 60,000 at 26.44
8.2%
Planned (10b5-1)
3 Sep 2025
Wang David H See Remarks
Sold on a plan 2×
$1.87M 70,000 at 26.76
9.4%
Planned (10b5-1)
22 May 2025
Wang David H See Remarks
Sold on a plan
$1.36M 60,000 at 22.63
8.2%
Planned (10b5-1)
21 May 2025
Wang David H See Remarks
Sold on a plan 2×
$1.65M 70,000 at 23.60
9.4%
Planned (10b5-1)
17 Mar 2025
Hu Chenming Director
Sold on a plan
$4.90M 163,308 at 30.00
62.0%
Sold half or more
13 Mar 2025
Wang David H See Remarks
Sold on a plan 2×
$1.02M 37,500 at 27.30
5.3%
Planned (10b5-1)
12 Mar 2025
Wang David H See Remarks
Sold on a plan
$1.03M 37,500 at 27.42
5.0%
Planned (10b5-1)
11 Mar 2025
Wang David H See Remarks
Sold on a plan
$1.49M 56,250 at 26.57
7.0%
Planned (10b5-1)
26 Nov 2024
Wang David H See Remarks
Sold on a plan 2×
$1.01M 56,250 at 17.89
7.9%
Planned (10b5-1)
22 Nov 2024
Wang David H See Remarks
Sold on a plan
$1.07M 56,250 at 19.08
7.3%
Planned (10b5-1)
8 Oct 2024
Xing Xiao Director · indirect
Sold on a plan
$1.91M 90,396 at 21.13
3.7%
Planned (10b5-1)
8 Oct 2024
Sold on a plan
$1.91M 90,396 at 21.13
3.7%
Planned (10b5-1)
7 Oct 2024
Xing Xiao Director · indirect
Sold on a plan 3×
$6.62M 275,000 at 24.08
10.2%
Planned (10b5-1)
7 Oct 2024
Sold on a plan 3×
$6.62M 275,000 at 24.07
10.2%
Planned (10b5-1)
4 Oct 2024
Sold on a plan 2×
$14.99M 700,000 at 21.41
20.6%
Planned (10b5-1)
4 Oct 2024
Xing Xiao Director · indirect
Sold on a plan 2×
$14.99M 700,000 at 21.41
20.6%
Planned (10b5-1)
29 May 2024
Wang David H See Remarks
Sold on a plan 2×
$1.95M 86,090 at 22.62
14.6%
Planned (10b5-1)
22 May 2024
Wang David H See Remarks
Sold on a plan 2×
$2.05M 90,000 at 22.81
13.2%
Planned (10b5-1)
14 Mar 2024
Wang David H See Remarks
Sold on a plan 2×
$2.41M 87,089 at 27.62
14.7%
Planned (10b5-1)
8 Mar 2024
Wang David H See Remarks
Sold on a plan 2×
$2.73M 90,000 at 30.36
13.2%
Planned (10b5-1)
29 Nov 2023
Wang David H See Remarks
Sold on a plan 2×
$1.45M 84,776 at 17.14
14.4%
Planned (10b5-1)
22 Nov 2023
Wang David H See Remarks
Sold on a plan 2×
$1.59M 90,000 at 17.68
13.3%
Planned (10b5-1)
13 Sep 2023
Wang David H See Remarks
Sold on a plan
$1.50M 85,116 at 17.68
14.4%
Planned (10b5-1)
12 Sep 2023
Wang David H See Remarks
Sold on a plan 2×
$1.63M 90,000 at 18.06
13.3%
Planned (10b5-1)
23 Aug 2023
Chen Fuping See remarks
Sold at will
$1.58M 105,000 at 15.00
100%
Sold half or more
9 Mar 2022
Dun Haiping Director
Sold, plan not stated 3×
$1.01M 12,269 at 82.09
4.0%
24 Aug 2021
Xiang Yinan Director · indirect
Sold, plan not stated 3×
$21.50M 244,629 at 87.88
17.6%
23 Aug 2021
Xiang Yinan Director · indirect
Sold, plan not stated
$2.99M 35,136 at 85.03
2.5%
18 Aug 2021
Xiang Yinan Director · indirect
Sold, plan not stated 2×
$2.27M 26,612 at 85.12
1.8%
12 Aug 2021
Xiang Yinan Director · indirect
Sold, plan not stated
$1.71M 20,000 at 85.33
1.4%
11 Aug 2021
Xiang Yinan Director · indirect
Sold, plan not stated 4×
$2.58M 30,000 at 86.11
2.0%
9 Apr 2021
Cheav Sotheara See remarks
Sold, plan not stated
$1.14M 13,111 at 86.64
23.2%
19 Mar 2021
Wang David H See remarks
Sold, plan not stated
$4.46M 49,228 at 90.55
22.7%
18 Mar 2021
Wang David H See remarks
Sold, plan not stated
$4.60M 50,000 at 91.92
18.7%
12 Feb 2021
Chen Fuping See remarks
Sold, plan not stated
$3.60M 30,000 at 120.00
100%
Sold half or more
12 Feb 2021
Hu Chenming Director
Sold, plan not stated
$1.20M 10,000 at 120.00
32.2%
Showing 1–50 of 61. Page 1 of 2 Older →