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ACM Research, Inc.

ACMR · Special Industry Machinery, NEC · 14.2M shares · +36%/yr ↑ dilution · EDGAR filings ↗
Net buyback after stock comp: -$25M (gross $3M, SBC $27M)

Reference price $81.73 · est. market cap ~$1.2B — last insider sale, 2026-06-05 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)

Grade

B66

Semiconductor-equipment maker (wet processing) — profitable and growing, but FCF-negative on capex and China-exposed.

Strengths

Risks

Notable findings

Quarterly revenue

2025-06-30 · $215M2025-09-30 · $269M2025-12-31 · $244M2026-03-31 · $231M

Last 4 quarters · from SEC filings.

Key metrics

Gross margin
44.4%
Operating margin
12.1%
Net margin
10.4%
Return on equity
6.4%
Return on assets
3.3%
ROIC
5.3%
Revenue growth (QoQ)
-5.4%
Net-income growth
-9.2%
Debt / equity
0.1×
Net debt / EBITDA
-5.5×
Current ratio
3.3×
Free cash flow
-$67M
EBITDA
$124M
Tangible book value
$1.5B
Cash & investments
$859M
Cash runway
52q
Stock comp / revenue
3.7%

Insider transactions · last 18 months

DateInsiderTypeSharesPrice
2026-06-05Cheav SothearaSell400$84.01
2026-06-05Cheav SothearaSell1.6K$85.41
2026-06-05Cheav SothearaOption exercise5.4K$13.89
2026-06-05Cheav SothearaSell2.4K$81.73
2026-06-05Cheav SothearaSell968$82.61
2026-06-04Wang David HSell8.6K$87.13
2026-06-04Wang David HSell826$87.91
2026-06-04Cheav SothearaSell9.2K$85.11
2026-06-04Cheav SothearaOption exercise13K$13.89
2026-06-04Cheav SothearaSell1.3K$84.08
2026-06-04Cheav SothearaSell2.8K$85.77
2026-06-04Wang David HOption exercise40K$1.00
2026-06-04Wang David HSell2.1K$83.86
2026-06-04Wang David HSell18K$85.11
2026-06-04Wang David HSell11K$86.07
2026-06-03Wang David HSell5.8K$92.38
2026-06-03Wang David HOption exercise60K$1.00
2026-06-03Wang David HSell4.3K$87.57
2026-06-03Wang David HSell6.3K$88.98
2026-06-03Wang David HSell32K$89.84
2026-06-03Wang David HSell9.9K$90.78
2026-06-03Wang David HSell1.2K$93.04
2026-05-19Dun HaipingOption exercise5.0K$5.60
2026-05-19Dun HaipingSell1.3K$63.84
2026-05-19Dun HaipingSell500$65.09
2026-05-19Dun HaipingSell1.3K$67.21
2026-05-19Dun HaipingSell1.9K$67.54
2026-04-17Pappis Charles COption exercise5.0K$29.18
2026-04-17Pappis Charles CSell5.0K$52.00
2026-03-12Wang David HSell39K$45.74
2026-03-12McKechnie MarkOption exercise60K$13.89
2026-03-12McKechnie MarkSell12K$44.89
2026-03-12McKechnie MarkSell47K$45.74
2026-03-12McKechnie MarkSell982$46.55
2026-03-12McKechnie MarkOption exercise39K$19.49
2026-03-12McKechnie MarkSell8.6K$44.94
2026-03-12McKechnie MarkSell29K$45.74
2026-03-12McKechnie MarkSell564$46.57
2026-03-12Wang David HOption exercise50K$1.00
2026-03-12Wang David HSell11K$44.92
2026-03-12Wang David HSell702$46.57
2026-03-11Wang David HSell55K$47.89
2026-03-11Liu TracyOption exercise15K$1.00
2026-03-11Liu TracySell12K$47.81
2026-03-11Liu TracySell3.4K$48.25
2026-03-11Wang David HOption exercise60K$1.00
2026-03-11Wang David HSell4.6K$48.34
2026-03-10Liu TracySell13K$48.19
2026-03-10Liu TracyOption exercise45K$1.00
2026-03-10Liu TracySell32K$47.06
2026-03-09Dun HaipingOption exercise5.0K$5.60
2026-03-09Dun HaipingSell4.1K$43.37
2026-03-09Dun HaipingSell900$43.94
2026-03-06Feng LisaOption exercise15K$4.55
2026-03-06Feng LisaSell15K$46.07
2026-03-06Feng LisaSell200$46.58
2026-03-05Feng LisaOption exercise15K$4.55
2026-03-05Pappis Charles COption exercise5.0K$29.18
2026-03-05Pappis Charles CSell5.0K$50.09
2026-03-05Feng LisaSell8.1K$49.81
2026-03-05Feng LisaSell7.0K$50.24
2025-12-08McKechnie MarkSell22K$35.45
2025-12-08McKechnie MarkOption exercise22K$25.45
2025-12-04McKechnie MarkSell996$34.26
2025-12-04Wang David HSell40K$34.42
2025-12-04Wang David HSell20K$33.52
2025-12-04McKechnie MarkOption exercise8.8K$4.55
2025-12-04Wang David HOption exercise60K$1.00
2025-12-04McKechnie MarkSell7.8K$33.50
2025-12-03Wang David HOption exercise70K$1.00
2025-12-03Wang David HSell69K$33.05
2025-12-03Wang David HSell1.2K$33.56
2025-12-03Chen FupingOption exercise20K$1.77
2025-12-03Chen FupingSell20K$33.05
2025-12-03Chen FupingSell300$33.57
2025-12-02Chen FupingOption exercise100K$1.77
2025-12-02Chen FupingSell100K$33.20
2025-11-13Feng LisaOption exercise15K$5.60
2025-11-13Feng LisaSell15K$33.77
2025-11-12Feng LisaOption exercise15K$5.60
2025-11-12Dun HaipingGift755K
2025-11-12Feng LisaSell15K$32.76
2025-09-18Wang JianSell30K$35.00
2025-09-18Cheav SothearaOption exercise10K$13.89
2025-09-18Cheav SothearaSell10K$35.00
2025-09-18Wang JianOption exercise30K$5.60
2025-09-17Liu TracySell15K$33.00
2025-09-17Liu TracyOption exercise15K$1.00
2025-09-08Wang David HOption exercise130K$1.00
2025-09-04Wang David HOption exercise60K$1.00
2025-09-04Wang David HSell60K$26.44
2025-09-03Wang David HSell66K$26.73
2025-09-03Wang David HSell3.9K$27.31
2025-09-03Wang David HOption exercise70K$1.00
2025-08-25Wang JianSell30K$32.00
2025-08-25Wang JianOption exercise30K$5.60
2025-08-22Cheav SothearaSell11K$30.00
2025-08-22Cheav SothearaOption exercise11K$13.89
2025-08-22Wang JianOption exercise30K$5.60
2025-08-22Wang JianSell30K$30.00
2025-07-15Liu TracyOption exercise15K$1.00
2025-07-15Liu TracySell15K$30.00
2025-07-07Feng LisaSell15K$28.00
2025-07-07Feng LisaOption exercise15K$5.60
2025-06-24Feng LisaOption exercise15K$5.60
2025-06-24Feng LisaSell15K$26.00
2025-05-22Wang David HSell60K$22.63
2025-05-22Wang David HOption exercise60K$1.00
2025-05-21Wang David HSell8$24.04
2025-05-21Wang David HOption exercise70K$1.00
2025-05-21Wang David HSell70K$23.60
2025-05-14McKechnie MarkOption exercise15K$5.60
2025-05-14McKechnie MarkSell15K$25.22
2025-03-17Hu ChenmingSell163K$30.00
2025-03-14Dun HaipingSell7.1K$29.23
2025-03-14Dun HaipingSell2.5K$28.32
2025-03-13Wang David HSell36K$27.29
2025-03-13Wang David HSell1.0K$27.65
2025-03-12McKechnie MarkOption exercise15K$5.60
2025-03-12Wang David HSell38K$27.42
2025-03-12McKechnie MarkSell15K$27.42
2025-03-11Wang David HSell56K$26.57
2025-03-10Dun HaipingSell15K$26.54
2025-03-03Dun HaipingOption exercise25K$0.50
2025-03-03Dun HaipingTax withheld482$25.94
2025-03-03Wang David HOption exercise210K$0.50
2025-03-03Wang David HTax withheld4.0K$25.94
2025-02-06Cheav SothearaOption exercise10K$13.89
2025-02-06Cheav SothearaOption exercise13K$13.89
2025-02-06McKechnie MarkOption exercise15K$5.60
2025-02-06McKechnie MarkSell15K$22.00
2025-02-06Cheav SothearaSell23K$23.00

All non-derivative Form 4 activity (SEC), newest first.

Notable events (8-K)

DateItems
2026-06-22OtherExhibitsfiling ↗
2026-06-12Shareholder votefiling ↗
2026-05-29OtherExhibitsfiling ↗
2026-05-22OtherExhibitsfiling ↗
2026-05-15Otherfiling ↗
2026-05-12Material agreementExhibitsfiling ↗
2026-05-07ResultsExhibitsfiling ↗
2026-04-27ResultsExhibitsfiling ↗

Recent filings

FormFiledPeriodAccession
8-K2026-06-222026-06-180001628280-26-044506 ↗
8-K2026-06-122026-06-100001628280-26-042833 ↗
8-K2026-05-292026-05-260001140361-26-023310 ↗
8-K2026-05-222026-05-190001628280-26-037552 ↗
8-K2026-05-152026-05-150001140361-26-021661 ↗
8-K2026-05-122026-05-120001140361-26-020717 ↗
10-Q2026-05-082026-03-310001628280-26-032842 ↗
8-K2026-05-072026-05-070001628280-26-031688 ↗
8-K2026-04-272026-04-270001628280-26-027353 ↗
8-K2026-04-172026-04-170001628280-26-025599 ↗
8-K2026-03-242026-03-240001628280-26-020846 ↗
8-K2026-03-192026-03-130001628280-26-019811 ↗