MetaCap

ACM Research Insider Trades

NASDAQ: ACMRTechnologyIndustrial Machinery/ComponentsUSD

71.37+0.57 (+0.81%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
0 · $0
Sales
71 · $50.66M
Shares bought / sold
0 / 933.75K
Net activity
Net selling $50.7 million

ACM Research insider activity

Over the last 12 months, ACM Research insiders reported 100 transactions on SEC Form 4: 0 open-market purchases and 71 sales. Insiders bought $0 and sold $50.7 million worth of stock, for net insider selling of $50.7 million. The largest seller was Wang David H, with $29.0 million in reported sales.

The most recent filing shows Wang David H (See Remarks) reporting a transaction in 70,000 shares at $1.00 on Sep 9, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put ACMR's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

ACMR insider transactions

ACM Research insider transactions
DateInsiderTypeSharesValueFiling
Sep 9, 2026Wang David HSee RemarksSale1,100$85.35KForm 4
Sep 9, 2026Wang David HSee RemarksSale4,807$368.84KForm 4
Sep 9, 2026Wang David HSee RemarksSale11,666$881.72KForm 4
Sep 9, 2026Wang David HSee RemarksSale18,934$1.41MForm 4
Sep 9, 2026Wang David HSee RemarksSale33,493$2.47MForm 4
Sep 9, 2026Wang David HSee RemarksOption exercise70,000$70.00KForm 4
Sep 8, 2026Wang David HSee RemarksSale1,500$117.86KForm 4
Sep 8, 2026Wang David HSee RemarksSale12,323$962.18KForm 4
Sep 8, 2026Wang David HSee RemarksSale51,374$3.96MForm 4
Sep 8, 2026Wang David HSee RemarksSale4,803$364.98KForm 4
Sep 8, 2026Wang David HSee RemarksOption exercise70,000$70.00KForm 4
Aug 20, 2026McKechnie MarkSee RemarksSale11,209$873.07KForm 4
Aug 20, 2026McKechnie MarkSee RemarksSale30,365$2.35MForm 4
Aug 20, 2026McKechnie MarkSee RemarksSale13,625$1.04MForm 4
Aug 20, 2026McKechnie MarkSee RemarksOption exercise25,000$347.25KForm 4
Aug 20, 2026McKechnie MarkSee RemarksOption exercise30,199$588.58KForm 4
Aug 18, 2026Dun HaipingDirectorSale400$32.87KForm 4
Aug 18, 2026Dun HaipingDirectorSale3,400$276.45KForm 4
Aug 18, 2026Dun HaipingDirectorSale1,200$96.35KForm 4
Aug 18, 2026Dun HaipingDirectorOption exercise5,000$28.00KForm 4
Jun 5, 2026Cheav SothearaSee remarksSale1,647$140.67KForm 4
Jun 5, 2026Cheav SothearaSee remarksSale400$33.60KForm 4
Jun 5, 2026Cheav SothearaSee remarksSale968$79.97KForm 4
Jun 5, 2026Cheav SothearaSee remarksSale2,384$194.84KForm 4
Jun 5, 2026Cheav SothearaSee remarksOption exercise5,399$74.99KForm 4
Jun 4, 2026Wang David HSee RemarksSale826$72.61KForm 4
Jun 4, 2026Wang David HSee RemarksSale8,581$747.66KForm 4
Jun 4, 2026Wang David HSee RemarksSale10,992$946.08KForm 4
Jun 4, 2026Wang David HSee RemarksSale17,543$1.49MForm 4
Jun 4, 2026Wang David HSee RemarksSale2,060$172.75KForm 4
Jun 4, 2026Wang David HSee RemarksOption exercise40,002$40.00KForm 4
Jun 4, 2026Cheav SothearaSee remarksSale2,839$243.50KForm 4
Jun 4, 2026Cheav SothearaSee remarksSale9,212$784.03KForm 4
Jun 4, 2026Cheav SothearaSee remarksSale1,300$109.30KForm 4
Jun 4, 2026Cheav SothearaSee remarksOption exercise13,351$185.45KForm 4
Jun 3, 2026Wang David HSee RemarksSale1,187$110.44KForm 4
Jun 3, 2026Wang David HSee RemarksSale5,843$539.78KForm 4
Jun 3, 2026Wang David HSee RemarksSale9,925$900.99KForm 4
Jun 3, 2026Wang David HSee RemarksSale32,450$2.92MForm 4
Jun 3, 2026Wang David HSee RemarksSale6,295$560.13KForm 4
Jun 3, 2026Wang David HSee RemarksSale4,300$376.55KForm 4
Jun 3, 2026Wang David HSee RemarksOption exercise60,000$60.00KForm 4
May 19, 2026Dun HaipingDirectorSale1,858$125.49KForm 4
May 19, 2026Dun HaipingDirectorSale1,309$87.98KForm 4
May 19, 2026Dun HaipingDirectorSale500$32.55KForm 4
May 19, 2026Dun HaipingDirectorSale1,333$85.10KForm 4
May 19, 2026Dun HaipingDirectorOption exercise5,000$28.00KForm 4
Apr 17, 2026Pappis Charles CDirectorSale5,000$260.00KForm 4
Apr 17, 2026Pappis Charles CDirectorOption exercise5,000$145.90KForm 4
Mar 12, 2026Wang David HSee RemarksSale702$32.69KForm 4
Mar 12, 2026Wang David HSee RemarksSale38,737$1.77MForm 4
Mar 12, 2026Wang David HSee RemarksSale10,561$474.40KForm 4
Mar 12, 2026Wang David HSee RemarksOption exercise50,000$50.00KForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale564$26.27KForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale29,348$1.34MForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale8,639$388.24KForm 4
Mar 12, 2026McKechnie MarkSee RemarksOption exercise38,551$751.36KForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale982$45.71KForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale47,108$2.15MForm 4
Mar 12, 2026McKechnie MarkSee RemarksSale11,910$534.64KForm 4
Mar 12, 2026McKechnie MarkSee RemarksOption exercise60,000$833.40KForm 4
Mar 11, 2026Liu TracyDirectorSale3,377$162.94KForm 4
Mar 11, 2026Liu TracyDirectorSale11,623$555.70KForm 4
Mar 11, 2026Liu TracyDirectorOption exercise15,000$15.00KForm 4
Mar 11, 2026Wang David HSee RemarksSale4,627$223.67KForm 4
Mar 11, 2026Wang David HSee RemarksSale55,373$2.65MForm 4
Mar 11, 2026Wang David HSee RemarksOption exercise60,000$60.00KForm 4
Mar 10, 2026Liu TracyDirectorSale12,784$616.06KForm 4
Mar 10, 2026Liu TracyDirectorSale32,216$1.52MForm 4
Mar 10, 2026Liu TracyDirectorOption exercise45,000$45.00KForm 4
Mar 9, 2026Dun HaipingDirectorSale900$39.55KForm 4
Mar 9, 2026Dun HaipingDirectorSale4,100$177.82KForm 4
Mar 9, 2026Dun HaipingDirectorOption exercise5,000$28.00KForm 4
Mar 6, 2026Feng LisaSee remarksSale200$9.32KForm 4
Mar 6, 2026Feng LisaSee remarksSale14,800$681.84KForm 4
Mar 6, 2026Feng LisaSee remarksOption exercise15,000$68.25KForm 4
Mar 5, 2026Feng LisaSee remarksSale6,950$349.17KForm 4
Mar 5, 2026Feng LisaSee remarksSale8,050$400.97KForm 4
Mar 5, 2026Feng LisaSee remarksOption exercise15,000$68.25KForm 4
Mar 5, 2026Pappis Charles CDirectorSale5,000$250.45KForm 4
Mar 5, 2026Pappis Charles CDirectorOption exercise5,000$145.90KForm 4
Dec 8, 2025McKechnie MarkSee RemarksSale22,500$797.63KForm 4
Dec 8, 2025McKechnie MarkSee RemarksOption exercise22,500$572.63KForm 4
Dec 4, 2025Wang David HSee RemarksSale40,183$1.38MForm 4
Dec 4, 2025Wang David HSee RemarksSale19,817$664.27KForm 4
Dec 4, 2025Wang David HSee RemarksOption exercise60,000$60.00KForm 4
Dec 4, 2025McKechnie MarkSee RemarksSale996$34.12KForm 4
Dec 4, 2025McKechnie MarkSee RemarksSale7,754$259.76KForm 4
Dec 4, 2025McKechnie MarkSee RemarksOption exercise8,750$39.81KForm 4
Dec 3, 2025Chen FupingSee remarksSale300$10.07KForm 4
Dec 3, 2025Chen FupingSee remarksSale19,700$651.09KForm 4
Dec 3, 2025Chen FupingSee remarksOption exercise20,000$35.40KForm 4
Dec 3, 2025Wang David HSee RemarksSale1,200$40.27KForm 4
Dec 3, 2025Wang David HSee RemarksSale68,800$2.27MForm 4
Dec 3, 2025Wang David HSee RemarksOption exercise70,000$70.00KForm 4
Dec 2, 2025Chen FupingSee remarksSale100,000$3.32MForm 4
Dec 2, 2025Chen FupingSee remarksOption exercise100,000$177.00KForm 4
Nov 13, 2025Feng LisaSee remarksSale15,000$506.55KForm 4
Nov 13, 2025Feng LisaSee remarksOption exercise15,000$84.00KForm 4
Nov 12, 2025Dun HaipingDirectorGift755,090—Form 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

Related