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CIK 0001680062 · Large accelerated filer

ACM Research, Inc.

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Ticker
ACMR
Exchange
Nasdaq
Industry
Special Industry Machinery, NEC
FY end
Dec 31
Incorporated
CA
Entity type
operating
Phone
510-445-3700
Business address
42307 OSGOOD ROAD, SUITE I, FREMONT, CA, 94539
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$15,300,651
in 3 filings, $15.3M under 10b5-1 plans

Net −$15,300,651. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Date Insider Transaction Shares Price Value Owned after
2026-08-20 McKechnie Mark See Remarks Option exercise · Stock Option 10b5-1 −30,199 31,250
2026-08-20 McKechnie Mark See Remarks Option exercise · Stock Option 10b5-1 −25,000 215,000
2026-08-18 Dun Haiping Director Option exercise 10b5-1 +5,000 $5.60 $28K 5,000
2026-08-18 Dun Haiping Director Sale 10b5-1 −1,200 $80.29 $96K 3,800
2026-08-18 Dun Haiping Director Sale 10b5-1 −3,400 $81.31 $276K 400
2026-08-18 Dun Haiping Director Sale 10b5-1 −400 $82.17 $33K 0
2026-08-18 Dun Haiping Director Option exercise · Stock Option 10b5-1 −5,000 45,000
2026-08-12 Pappis Charles C Director Grant or award · Stock Option +6,400 6,400
2026-08-12 Pappis Charles C Director Grant or award · Restricted Stock Units +728 728
2026-08-12 Liu Tracy Director Grant or award · Stock Option +6,400 6,400
2026-08-12 Liu Tracy Director Grant or award · Restricted Stock Units +728 728
2026-08-12 Dun Haiping Director Grant or award · Stock Option +6,400 6,400
2026-08-12 Dun Haiping Director Grant or award · Restricted Stock Units +728 728
2026-06-05 Cheav Sotheara See remarks Option exercise 10b5-1 +5,399 $13.89 $75K 105,401
2026-06-05 Cheav Sotheara See remarks Sale 10b5-1 −2,384 $81.73 $195K 103,017
2026-06-05 Cheav Sotheara See remarks Sale 10b5-1 −968 $82.61 $80K 102,049
2026-06-05 Cheav Sotheara See remarks Sale 10b5-1 −400 $84.01 $34K 101,649
2026-06-05 Cheav Sotheara See remarks Sale 10b5-1 −1,647 $85.41 $141K 100,002
2026-06-05 Cheav Sotheara See remarks Option exercise · Stock Option 10b5-1 −5,399 37,500
2026-06-04 Cheav Sotheara See remarks Option exercise 10b5-1 +13,351 $13.89 $185K 113,353

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