ACMR

ACM Research, Inc.

Insider trading activity for ACM Research, Inc., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$10.8M

net selling

Bought(0 · 0 insiders): $0
Sold(22 · 3 insiders): $10.8M

Past 6 months

-$11M

net selling

Bought(0 · 0 insiders): $0
Sold(23 · 4 insiders): $11M

Past 12 months

-$11M

net selling

Bought(0 · 0 insiders): $0
Sold(23 · 4 insiders): $11M

Transaction history

The 36 most recent Form 4 transactions.

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Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Jun 5	Cheav Sotheara	See remarks	MEXER◷◆	5,399	—	—	—	Open the original filing on SEC.gov
Jun 5	Cheav Sotheara	See remarks	SSELL◷	1,647	$85.41	$140.7K	-1.6%	Open the original filing on SEC.gov
Jun 5	Cheav Sotheara	See remarks	SSELL◷	400	$84.01	$33.6K	-0.4%	Open the original filing on SEC.gov
Jun 5	Cheav Sotheara	See remarks	SSELL◷	968	$82.61	$80K	-0.9%	Open the original filing on SEC.gov
Jun 5	Cheav Sotheara	See remarks	SSELL◷	2,384	$81.73	$194.8K	-2.3%	Open the original filing on SEC.gov
Jun 5	Cheav Sotheara	See remarks	MEXER◷	5,399	$13.89	$75K	+5.4%	Open the original filing on SEC.gov
Jun 4	Cheav Sotheara	See remarks	MEXER◷◆	13,351	—	—	—	Open the original filing on SEC.gov
Jun 4	Cheav Sotheara	See remarks	SSELL◷	2,839	$85.77	$243.5K	-2.8%	Open the original filing on SEC.gov
Jun 4	Cheav Sotheara	See remarks	SSELL◷	9,212	$85.11	$784K	-8.2%	Open the original filing on SEC.gov
Jun 4	Cheav Sotheara	See remarks	SSELL◷	1,300	$84.08	$109.3K	-1.1%	Open the original filing on SEC.gov
Jun 4	Cheav Sotheara	See remarks	MEXER◷	13,351	$13.89	$185.4K	+13.4%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	MEXER◷◆	40,002	—	—	—	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	SSELL◷	826	$87.91	$72.6K	-0.1%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	SSELL◷	8,581	$87.13	$747.7K	-1.1%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	SSELL◷	10,992	$86.07	$946.1K	-1.3%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	SSELL◷	17,543	$85.11	$1.5M	-2.1%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	SSELL◷	2,060	$83.86	$172.8K	-0.2%	Open the original filing on SEC.gov
Jun 4	Wang David H	See Remarks	MEXER◷	40,002	$1.00	$40K	+5.0%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	MEXER◷◆	60,000	—	—	—	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	1,187	$93.04	$110.4K	-0.1%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	5,843	$92.38	$539.8K	-0.7%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	9,925	$90.78	$901K	-1.2%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	32,450	$89.84	$2.9M	-3.8%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	6,295	$88.98	$560.1K	-0.7%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	SSELL◷	4,300	$87.57	$376.6K	-0.5%	Open the original filing on SEC.gov
Jun 3	Wang David H	See Remarks	MEXER◷	60,000	$1.00	$60K	+7.5%	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	MEXER◷◆	5,000	—	—	—	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	SSELL◷	1,858	$67.54	$125.5K	-100.0%	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	SSELL◷	1,309	$67.21	$88K	-41.3%	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	SSELL◷	500	$65.09	$32.5K	-13.6%	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	SSELL◷	1,333	$63.84	$85.1K	-26.7%	Open the original filing on SEC.gov
May 19	Dun Haiping	Director	MEXER◷	5,000	$5.60	$28K	—	Open the original filing on SEC.gov
May 13	Wang David H	See Remarks	AGRANT◆	6,208	—	—	—	Open the original filing on SEC.gov
Apr 17	Pappis Charles C	Director	MEXER◷◆	5,000	—	—	—	Open the original filing on SEC.gov
Apr 17	Pappis Charles C	Director	SSELL◷	5,000	$52.00	$260K	-100.0%	Open the original filing on SEC.gov
Apr 17	Pappis Charles C	Director	MEXER◷	5,000	$29.18	$145.9K	—	Open the original filing on SEC.gov

MEXER◷◆—

Cheav Sotheara · See remarksJun 5

5,399 sh

SSELL◷$140.7K

Cheav Sotheara · See remarksJun 5

1,647 sh @ $85.41 · -1.6% own

SSELL◷$33.6K

Cheav Sotheara · See remarksJun 5

400 sh @ $84.01 · -0.4% own

SSELL◷$80K

Cheav Sotheara · See remarksJun 5

968 sh @ $82.61 · -0.9% own

SSELL◷$194.8K

Cheav Sotheara · See remarksJun 5

2,384 sh @ $81.73 · -2.3% own

MEXER◷$75K

Cheav Sotheara · See remarksJun 5

5,399 sh @ $13.89 · +5.4% own

MEXER◷◆—

Cheav Sotheara · See remarksJun 4

13,351 sh

SSELL◷$243.5K

Cheav Sotheara · See remarksJun 4

2,839 sh @ $85.77 · -2.8% own

SSELL◷$784K

Cheav Sotheara · See remarksJun 4

9,212 sh @ $85.11 · -8.2% own

SSELL◷$109.3K

Cheav Sotheara · See remarksJun 4

1,300 sh @ $84.08 · -1.1% own

MEXER◷$185.4K

Cheav Sotheara · See remarksJun 4

13,351 sh @ $13.89 · +13.4% own

MEXER◷◆—

Wang David H · See RemarksJun 4

40,002 sh

SSELL◷$72.6K

Wang David H · See RemarksJun 4

826 sh @ $87.91 · -0.1% own

SSELL◷$747.7K

Wang David H · See RemarksJun 4

8,581 sh @ $87.13 · -1.1% own

SSELL◷$946.1K

Wang David H · See RemarksJun 4

10,992 sh @ $86.07 · -1.3% own

SSELL◷$1.5M

Wang David H · See RemarksJun 4

17,543 sh @ $85.11 · -2.1% own

SSELL◷$172.8K

Wang David H · See RemarksJun 4

2,060 sh @ $83.86 · -0.2% own

MEXER◷$40K

Wang David H · See RemarksJun 4

40,002 sh @ $1.00 · +5.0% own

MEXER◷◆—

Wang David H · See RemarksJun 3

60,000 sh

SSELL◷$110.4K

Wang David H · See RemarksJun 3

1,187 sh @ $93.04 · -0.1% own

SSELL◷$539.8K

Wang David H · See RemarksJun 3

5,843 sh @ $92.38 · -0.7% own

SSELL◷$901K

Wang David H · See RemarksJun 3

9,925 sh @ $90.78 · -1.2% own

SSELL◷$2.9M

Wang David H · See RemarksJun 3

32,450 sh @ $89.84 · -3.8% own

SSELL◷$560.1K

Wang David H · See RemarksJun 3

6,295 sh @ $88.98 · -0.7% own

SSELL◷$376.6K

Wang David H · See RemarksJun 3

4,300 sh @ $87.57 · -0.5% own

MEXER◷$60K

Wang David H · See RemarksJun 3

60,000 sh @ $1.00 · +7.5% own

MEXER◷◆—

Dun Haiping · DirectorMay 19

5,000 sh

SSELL◷$125.5K

Dun Haiping · DirectorMay 19

1,858 sh @ $67.54 · -100.0% own

SSELL◷$88K

Dun Haiping · DirectorMay 19

1,309 sh @ $67.21 · -41.3% own

SSELL◷$32.5K

Dun Haiping · DirectorMay 19

500 sh @ $65.09 · -13.6% own

SSELL◷$85.1K

Dun Haiping · DirectorMay 19

1,333 sh @ $63.84 · -26.7% own

MEXER◷$28K

Dun Haiping · DirectorMay 19

5,000 sh @ $5.60

AGRANT◆—

Wang David H · See RemarksMay 13

6,208 sh

MEXER◷◆—

Pappis Charles C · DirectorApr 17

5,000 sh

SSELL◷$260K

Pappis Charles C · DirectorApr 17

5,000 sh @ $52.00 · -100.0% own

MEXER◷$145.9K

Pappis Charles C · DirectorApr 17

5,000 sh @ $29.18

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

1 of 5 filings we hold was filed after the two-business-day deadline. The furthest past the deadline was 32 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
May 13	Jul 5	Wang David HSee Remarks	32days · about 2 months	—	Filing ↗

Wang David HSee Remarks

32days · about 2 months

Traded May 13 · filed Jul 5Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.