13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
ISSUER PROFILE · CIK 0001680062 · CUSIP 00108J109

ACM Research IncACMR

3 13D/G filings 2 distinct filers 20 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
3
1 SCHEDULE 13G · 2 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
20
6 buys · 10 sales
Latest short DTC
2.58
as of 2026-10-15

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $6.17M
Point72 Asset Mgmt

13D/G Filings Timeline · 3 total

FiledFormFilerStakeSharesIntent
2026-07-31 SCHEDULE 13G VANGUARD PORTFOLIO MANAGEMENT LLC — — view →
2024-10-08 SC Shanghai Science & Technology Venture Capital (Group) Co., Ltd. — — view →
2023-07-18 SC Shanghai Science & Technology Venture Capital (Group) Co., Ltd. — — view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-08-20 McKechnie Mark officer Option exercise 30,199 $19.49 $589K
2026-08-20 McKechnie Mark officer Option exercise 25,000 $13.89 $347K
2026-08-20 McKechnie Mark officer Sale 13,625 $76.34 $1.04M
2026-08-20 McKechnie Mark officer Sale 30,365 $77.45 $2.35M
2026-08-20 McKechnie Mark officer Sale 11,209 $77.89 $873K
2026-08-12 Pappis Charles C director Award 6,400 $81.26 $520K
2026-08-12 Pappis Charles C director Award 728 $96.13 $70K
2026-08-12 Liu Tracy director Award 6,400 $81.26 $520K
2026-08-12 Liu Tracy director Award 728 $96.13 $70K
2026-08-12 Dun Haiping director Award 6,400 $81.26 $520K
2026-08-12 Dun Haiping director Award 728 $96.13 $70K
2026-06-05 Cheav Sotheara officer Option exercise 5,399 $13.89 $75K
2026-06-05 Cheav Sotheara officer Sale 2,384 $81.73 $195K
2026-06-05 Cheav Sotheara officer Sale 968 $82.61 $80K
2026-06-05 Cheav Sotheara officer Sale 400 $84.01 $34K
2026-06-05 Cheav Sotheara officer Sale 1,647 $85.41 $141K
2026-06-04 Cheav Sotheara officer Option exercise 13,351 $13.89 $185K
2026-06-04 Cheav Sotheara officer Sale 1,300 $84.08 $109K
2026-06-04 Cheav Sotheara officer Sale 9,212 $85.11 $784K
2026-06-04 Cheav Sotheara officer Sale 2,839 $85.77 $244K

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-10-15 3,482,683 2.58 -14.1%
2026-09-30 4,055,665 3.16 -2.0%
2026-09-15 4,136,685 4.64 +4.2%
2026-08-31 3,970,966 4.37 +20.9%
2026-08-14 3,285,493 4.05 -8.8%
2026-07-31 3,603,818 3.35 -7.9%
2026-07-15 3,911,207 2.85 +20.5%
2026-06-30 3,246,092 1.53 +37.6%
2026-06-15 2,359,065 1.48 -21.7%
2026-05-29 3,011,862 1.55 +7.6%
2026-05-15 2,798,382 1.50 +2.1%
2026-04-30 2,739,731 2.39 +2.8%

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