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ACMR

ACM Research, Inc.

NASDAQ · Technology · Semiconductors · US

$68.51
+1.09%
Ask drillr
0
Insider buys (3m)
15
Insider sells (3m)
-$15.3M
Net value (3m)
-33.7%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale18,934$75
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale4,803$76
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale1,500$79
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale33,493$74
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale12,323$78
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale4,807$77
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale51,374$77
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale11,666$76
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale1,100$78
Sep 10, 2026Wang David H · director, 10 percent owner, officer: See RemarksM-Exempt70,000$1.00
Aug 26, 2026Dun Haiping · directorA-Award6,400$81
Aug 26, 2026Liu Tracy · directorA-Award6,400$81
Aug 26, 2026Pappis Charles C · directorA-Award6,400$81
Aug 26, 2026Pappis Charles C · directorA-Award728$96
Aug 26, 2026Dun Haiping · directorA-Award728$96
Aug 26, 2026Liu Tracy · directorA-Award728$96
Aug 21, 2026McKechnie Mark · officer: See RemarksM-Exempt30,199$19
Aug 21, 2026McKechnie Mark · officer: See RemarksSale11,209$78
Aug 21, 2026McKechnie Mark · officer: See RemarksM-Exempt25,000$14
Aug 21, 2026McKechnie Mark · officer: See RemarksSale30,365$77
Aug 21, 2026McKechnie Mark · officer: See RemarksSale13,625$76
Aug 20, 2026Dun Haiping · directorSale1,200$80
Aug 20, 2026Dun Haiping · directorSale400$82
Aug 20, 2026Dun Haiping · directorM-Exempt5,000$5.60
Aug 20, 2026Dun Haiping · directorSale3,400$81
Jul 6, 2026Wang David H · director, 10 percent owner, officer: See RemarksA-Award6,208$0.00
Jun 5, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale17,543$85
Jun 5, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale826$88
Jun 5, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale6,295$89
Jun 5, 2026Wang David H · director, 10 percent owner, officer: See RemarksSale2,060$84
Institutional positioning

13F filings over the trailing two quarters

New 194Increased 211Reduced 207Sold out 43
FilerActionSharesFiled
BlackRock, Inc.Increased8,660,842Aug 7, 2026
BLACKROCK, INC.Increased7,984,847May 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased3,349,436Aug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased2,462,745Aug 13, 2026
Capital World InvestorsNew Position2,398,036Aug 12, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2,264,337May 15, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position2,203,831May 8, 2026
STATE STREET CORPIncreased2,188,254Aug 7, 2026
STATE STREET CORPIncreased2,006,116May 15, 2026
WCM INVESTMENT MANAGEMENT, LLCIncreased1,860,874May 7, 2026
CITIGROUP INCIncreased1,591,892May 11, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased1,487,797Aug 12, 2026
JANE STREET GROUP, LLCIncreased1,448,700Aug 14, 2026
Tidal Investments LLCIncreased1,374,337Aug 13, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased1,371,227May 15, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 10, 2026