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ACM Research, Inc. insider trading

This tab shows only the shares insiders bought or sold on the open market in the last twelve months (Form 4 codes P and S). Grants, option exercises, shares held back for tax and gifts are left out on purpose, so what is left is insiders trading at the market price like anyone else.

In the last twelve months insiders at ACM Research, Inc. filed 72 open-market sales worth $51.2 million and 0 open-market purchases, on Form 4 with the SEC. The latest: Wang David H, See Remarks, sold 33,493 shares at $73.80 on 9 September 2026, filed 10 September 2026.

TradedInsiderRoleTypeSharesPriceValueFiling
9 September 2026Wang David HSee RemarksSale33,493$73.80$2.5 millionForm 4
9 September 2026Wang David HSee RemarksSale18,934$74.67$1.4 millionForm 4
9 September 2026Wang David HSee RemarksSale11,666$75.58$881,716Form 4
9 September 2026Wang David HSee RemarksSale4,807$76.73$368,841Form 4
9 September 2026Wang David HSee RemarksSale1,100$77.59$85,349Form 4
8 September 2026Wang David HSee RemarksSale4,803$75.99$364,980Form 4
8 September 2026Wang David HSee RemarksSale51,374$77.15$4.0 millionForm 4
8 September 2026Wang David HSee RemarksSale12,323$78.08$962,180Form 4
8 September 2026Wang David HSee RemarksSale1,500$78.57$117,855Form 4
20 August 2026McKechnie MarkSee RemarksSale13,625$76.34$1.0 millionForm 4
20 August 2026McKechnie MarkSee RemarksSale30,365$77.45$2.4 millionForm 4
20 August 2026McKechnie MarkSee RemarksSale11,209$77.89$873,069Form 4
18 August 2026Dun HaipingDirectorSale1,200$80.29$96,348Form 4
18 August 2026Dun HaipingDirectorSale3,400$81.31$276,454Form 4
18 August 2026Dun HaipingDirectorSale400$82.17$32,868Form 4
5 June 2026Cheav SothearaSee remarksSale2,384$81.73$194,844Form 4
5 June 2026Cheav SothearaSee remarksSale968$82.61$79,966Form 4
5 June 2026Cheav SothearaSee remarksSale400$84.01$33,604Form 4
5 June 2026Cheav SothearaSee remarksSale1,647$85.41$140,670Form 4
4 June 2026Cheav SothearaSee remarksSale1,300$84.08$109,304Form 4
4 June 2026Cheav SothearaSee remarksSale9,212$85.11$784,033Form 4
4 June 2026Cheav SothearaSee remarksSale2,839$85.77$243,501Form 4
4 June 2026Wang David HSee RemarksSale2,060$83.86$172,752Form 4
4 June 2026Wang David HSee RemarksSale17,543$85.11$1.5 millionForm 4
4 June 2026Wang David HSee RemarksSale10,992$86.07$946,081Form 4
4 June 2026Wang David HSee RemarksSale8,581$87.13$747,663Form 4
4 June 2026Wang David HSee RemarksSale826$87.91$72,614Form 4
3 June 2026Wang David HSee RemarksSale4,300$87.57$376,551Form 4
3 June 2026Wang David HSee RemarksSale6,295$88.98$560,129Form 4
3 June 2026Wang David HSee RemarksSale32,450$89.84$2.9 millionForm 4
3 June 2026Wang David HSee RemarksSale9,925$90.78$900,992Form 4
3 June 2026Wang David HSee RemarksSale5,843$92.38$539,776Form 4
3 June 2026Wang David HSee RemarksSale1,187$93.04$110,438Form 4
19 May 2026Dun HaipingDirectorSale1,333$63.84$85,099Form 4
19 May 2026Dun HaipingDirectorSale500$65.09$32,545Form 4
19 May 2026Dun HaipingDirectorSale1,309$67.21$87,978Form 4
19 May 2026Dun HaipingDirectorSale1,858$67.54$125,489Form 4
17 April 2026Pappis Charles CDirectorSale5,000$52.00$260,000Form 4
12 March 2026McKechnie MarkSee RemarksSale11,910$44.89$534,640Form 4
12 March 2026McKechnie MarkSee RemarksSale47,108$45.74$2.2 millionForm 4
12 March 2026McKechnie MarkSee RemarksSale982$46.55$45,712Form 4
12 March 2026McKechnie MarkSee RemarksSale8,639$44.94$388,237Form 4
12 March 2026McKechnie MarkSee RemarksSale29,348$45.74$1.3 millionForm 4
12 March 2026McKechnie MarkSee RemarksSale564$46.57$26,265Form 4
12 March 2026Wang David HSee RemarksSale10,561$44.92$474,400Form 4
12 March 2026Wang David HSee RemarksSale38,737$45.74$1.8 millionForm 4
12 March 2026Wang David HSee RemarksSale702$46.57$32,692Form 4
11 March 2026Wang David HSee RemarksSale55,373$47.89$2.7 millionForm 4
11 March 2026Wang David HSee RemarksSale4,627$48.34$223,669Form 4
11 March 2026Liu TracyDirectorSale11,623$47.81$555,696Form 4
11 March 2026Liu TracyDirectorSale3,377$48.25$162,940Form 4
10 March 2026Liu TracyDirectorSale32,216$47.06$1.5 millionForm 4
10 March 2026Liu TracyDirectorSale12,784$48.19$616,061Form 4
9 March 2026Dun HaipingDirectorSale4,100$43.37$177,817Form 4
9 March 2026Dun HaipingDirectorSale900$43.94$39,546Form 4
6 March 2026Feng LisaSee remarksSale14,800$46.07$681,836Form 4
6 March 2026Feng LisaSee remarksSale200$46.58$9,316Form 4
5 March 2026Pappis Charles CDirectorSale5,000$50.09$250,450Form 4
5 March 2026Feng LisaSee remarksSale8,050$49.81$400,970Form 4
5 March 2026Feng LisaSee remarksSale6,950$50.24$349,168Form 4
8 December 2025McKechnie MarkSee RemarksSale22,500$35.45$797,625Form 4
4 December 2025McKechnie MarkSee RemarksSale7,754$33.50$259,759Form 4
4 December 2025McKechnie MarkSee RemarksSale996$34.26$34,123Form 4
4 December 2025Wang David HSee RemarksSale19,817$33.52$664,266Form 4
4 December 2025Wang David HSee RemarksSale40,183$34.42$1.4 millionForm 4
3 December 2025Wang David HSee RemarksSale68,800$33.05$2.3 millionForm 4
3 December 2025Wang David HSee RemarksSale1,200$33.56$40,272Form 4
3 December 2025Chen FupingSee remarksSale19,700$33.05$651,085Form 4
3 December 2025Chen FupingSee remarksSale300$33.57$10,071Form 4
2 December 2025Chen FupingSee remarksSale100,000$33.20$3.3 millionForm 4
13 November 2025Feng LisaSee remarksSale15,000$33.77$506,550Form 4
12 November 2025Feng LisaSee remarksSale15,000$32.76$491,400Form 4

A filing with several lines appears once per line.

Source

Form 4 filings on EDGAR for ACM Research, Inc.: the company's filing index.

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