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ACMR · Acm Research, Inc.
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ACMR ACM Research (ACMR) Insider Trading, Ownership & Congress Trades

Semiconductors & Electronics · Special industry machinery, nec · CIK 0001680062
Quote by TradingView
Form 144 · 4
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
0
13F, latest reported quarter
Conversions, 180 days
10
Codes C/M, not in net · $1.5M priced

What the filings say about ACMR

Insiders, 180 days
-$26.1M net sold
4 sellers · 41% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$15.3M
4 notices

ACM Research insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, ACM Research, Inc. insiders sold a net $26.1M of stock across 215 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-27.

Insider
Filed
Shares
Value
Since filing
Wang David H
See Remarks
SELL
2026-09-10 SECtraded 2026-09-09
33,493
$2.5M
-29.2%
Context
  • 52 earlier Form 4 trades (code P or S) here by this insider (52 sales), the last on Sep 8, 2026.
  • The trade is 4.0% of the 839,215 shares held after it.
  • 2 other insiders sold within 30 days.
Insider activity: See Remarks Wang David H sold about $2.5M of ACMR under a 10b5-1 plan on Sep 9, 2026; 2 other insiders sold within 30 days.
Wang David H
See Remarks
SELL
2026-09-10 SECtraded 2026-09-09
18,934
$1.4M
-29.2%
Context
  • 52 earlier Form 4 trades (code P or S) here by this insider (52 sales), the last on Sep 8, 2026.
  • The trade is 2.3% of the 820,281 shares held after it.
  • 2 other insiders sold within 30 days.
Insider activity: See Remarks Wang David H sold about $1.4M of ACMR under a 10b5-1 plan on Sep 9, 2026; 2 other insiders sold within 30 days.
Wang David H
See Remarks
SELL
2026-09-10 SECtraded 2026-09-09
11,666
$881.7K
-29.2%
Context
  • 52 earlier Form 4 trades (code P or S) here by this insider (52 sales), the last on Sep 8, 2026.
  • The trade is 1.4% of the 808,615 shares held after it.
  • 2 other insiders sold within 30 days.
Insider activity: See Remarks Wang David H sold about $881.7K of ACMR under a 10b5-1 plan on Sep 9, 2026; 2 other insiders sold within 30 days.
Wang David H
See Remarks
SELL
2026-09-10 SECtraded 2026-09-09
4,807
$368.8K
-29.2%
Context
  • 52 earlier Form 4 trades (code P or S) here by this insider (52 sales), the last on Sep 8, 2026.
  • The trade is 0.6% of the 803,808 shares held after it.
  • 2 other insiders sold within 30 days.
Insider activity: See Remarks Wang David H sold about $368.8K of ACMR under a 10b5-1 plan on Sep 9, 2026; 2 other insiders sold within 30 days.
Wang David H
See Remarks
SELL
2026-09-10 SECtraded 2026-09-09
1,100
$85.3K
-29.2%
Context
  • 52 earlier Form 4 trades (code P or S) here by this insider (52 sales), the last on Sep 8, 2026.
  • The trade is 0.1% of the 802,708 shares held after it.
  • 2 other insiders sold within 30 days.
Insider activity: See Remarks Wang David H sold about $85.3K of ACMR under a 10b5-1 plan on Sep 9, 2026; 2 other insiders sold within 30 days.
215 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
Showing the latest few. to see 210 more transactions and use the screener and CSV export. We store only your email; there is no password.
Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$26.1M over 180 days
-$15.3M over 90 days · -$19.5M of it by a 10%+ holder
below 71% of Semiconductors & Electronics
Congress
no House purchase disclosed in the last 12 months
Funds
under five funds report holding it
Revenue
+15.2% year over year
more than 56% of Semiconductors & Electronics
Margin
10.4% net margin
more than 75% of Semiconductors & Electronics
Buybacks
no share repurchases reported
Short interest
6.6% of the float short (float per yahoo 2026-10-26) · 3.2 days to cover · settled 2026-09-30
more than 98% of Semiconductors & Electronics
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch ACMR

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+35.4%12M
-21%+65%+151%+237%2025-102025-122026-022026-042026-062026-082026-10 2026-09-08 · Wang David H sold $4.0M2025-12-02 · Chen Fuping sold $3.3M2026-06-03 · Wang David H sold $2.9M2026-03-11 · Wang David H sold $2.7M2026-09-09 · Wang David H sold $2.5M2026-08-20 · McKechnie Mark sold $2.4M2025-12-03 · Wang David H sold $2.3M2026-03-12 · McKechnie Mark sold $2.2M2026-03-12 · Wang David H sold $1.8M2026-03-10 · Liu Tracy sold $1.5M2026-06-04 · Wang David H sold $1.5M2026-09-09 · Wang David H sold $1.4M2025-12-04 · Wang David H sold $1.4M2026-03-12 · McKechnie Mark sold $1.3M2026-08-20 · McKechnie Mark sold $1.0M2026-09-08 · Wang David H sold $962.2K2026-06-04 · Wang David H sold $946.1K2026-06-03 · Wang David H sold $901.0K2026-09-09 · Wang David H sold $881.7K2026-08-20 · McKechnie Mark sold $873.1K2025-12-08 · McKechnie Mark sold $797.6K2026-06-04 · Cheav Sotheara sold $784.0K2026-06-04 · Wang David H sold $747.7K2026-03-06 · Feng Lisa sold $681.8K2025-12-04 · Wang David H sold $664.3K2025-12-03 · Chen Fuping sold $651.1K2026-03-10 · Liu Tracy sold $616.1K2026-06-03 · Wang David H sold $560.1K2026-03-11 · Liu Tracy sold $555.7K2026-06-03 · Wang David H sold $539.8K2026-03-12 · McKechnie Mark sold $534.6K2025-11-13 · Feng Lisa sold $506.6K2025-11-12 · Feng Lisa sold $491.4K2026-03-12 · Wang David H sold $474.4K2026-03-05 · Feng Lisa sold $401.0K2026-03-12 · McKechnie Mark sold $388.2K2026-06-03 · Wang David H sold $376.6K2026-09-09 · Wang David H sold $368.8K2026-09-08 · Wang David H sold $365.0K2026-03-05 · Feng Lisa sold $349.2K2026-08-18 · Dun Haiping sold $276.5K2026-04-17 · Pappis Charles C sold $260.0K2026-09-09 · HUI WANG filed to sell $5.2M2026-09-08 · HUI WANG filed to sell $5.4M2026-08-20 · MARK A MCKECHNIE filed to sell $4.3M2026-08-18 · HAIPING DUN filed to sell $405.7K
Insider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns ACMR: institutional holders (13F)

13F holdings, latest reported quarter
SEC 13F
No reported 13F holders

No fund above the reporting threshold listed this stock last quarter. That is a fact, not missing data.

Congress trades in ACMR

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

ACMR planned insider sales (Form 144)

Notice of intent to sell, filed before any sale
HUI WANG
Filed 2026-09-09
$5.2M
HUI WANG
Filed 2026-09-08
$5.4M
MARK A MCKECHNIE
Filed 2026-08-20
$4.3M
HAIPING DUN
Filed 2026-08-18
$405.7K
Executive pay vs shareholder return · Mr. Wang
CEO pay, headline and as actually paid, against the company's return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2023
$23.5M
$39.6M
$6.0M
+218%
+54%
2022
$405.0K
-$20.9M
$1.1M
+25%
+22%
2021
$398.9K
$10.8M
$240.8K
+362%
+51%
2020
$5.4M
$45.1M
$501.3K
+340%
+20%
Tagged by the company under SEC Item 402(v). Returns are cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $26.1M sold by insiders over 180 days, $15.3M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
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ACMR financials

Revenue growth
+15.2%
XBRL, annual
Net margin
10.4%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$1.0B
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
+14.5%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
-$118.7M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
0.13x
long-term 2026-06-30 plus current 2026-06-30; equity 2026-06-30
Cash flow to debt
-0.03x
TTM operating cash flow over long-term 2026-06-30 plus current 2026-06-30
Return on equity
+10.6%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets
+5.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
+12.9%
operating income after a 11.2% effective tax rate, over long-term 2026-06-30 plus current 2026-06-30 plus average of 2025-06-30 and 2026-06-30 minus cash
Return on capital employed
+6.9%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
24.27x
close 2026-10-26 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
Enterprise value
-$13.1M
market value at close 2026-10-26 on 2019-03-08 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
FCF yield
-16.4%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
0.89x
P/E over trailing EPS growth of 27%: four quarters to 2026-06-30 against the four to 2025-06-30
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-122024-122023-122022-12
Revenue$901.3M$782.1M$557.7M$388.8M
Gross profit$400.1M$391.6M$276.2M$183.6M
Operating income$109.4M$151.0M$95.8M$59.0M
Net income$94.1M$103.6M$77.3M$39.3M
EPS (diluted)1.371.531.160.59
Operating cash flow-$10.3M$152.4M-$75.3M-$62.2M
Cash$757.4M$407.4M$182.1M$248.0M
Long-term debt$178.9M$105.5M$54.0M$18.7M
SEC XBRL, fiscal years, as known on 2026-10-27

ACMR Stock Sonar score 6/7 axes

Find similar shapesCompare

ACMR ranks highest on profitability (62nd percentile) and risk and compliance (60th), and lowest on insider conviction (18th), among Semiconductors & Electronics peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
62
Inputs
  • Return on equity+10.6% · 63 pct, sector of 154
  • Return on assets+5.5% · 66 pct, sector of 171
  • Return on invested capital+12.9% · 55 pct, sector of 56
  • Return on capital employed+6.9% · 62 pct, sector of 155
Financial health
49
Inputs
  • Debt to equity0.13x · 60 pct, sector of 152
  • Cash flow to debt-0.03x · 39 pct, sector of 136
Growth
56
Inputs
  • Revenue growth, YoY+15.2% · 56 pct, sector of 194
  • Backlog growth, YoYno backlog line filed, or no year-earlier backlog
Insider conviction
18
Inputs
  • Net Form 4 buying (codes P and S), 180d-$10.8M · 37 pct, sector of 147
  • Insider buyers, 180d0 · 0 pct, sector of 151
Institutional and government
23
Inputs
  • Funds adding, latest quarterfewer than five funds report holding it
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quarters$150K · 23 pct, sector of 53
Risk and compliance
60
Inputs
  • Short interest, % of float+6.6% · 45 pct, sector of 221
  • Recalls per $1B revenue, 3ynot measured for this sector, almost no peer has an event
  • EPA cases per $1B revenue, 5ynot measured for this sector, almost no peer has an event
  • New text in Risk Factors, latest 10-K+7.0% · 75 pct, sector of 152
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

ACMR filings, in plain words

Are ACM Research insiders buying or selling ACMR?

In the 180 days to 2026-10-27, ACM Research insiders were net sellers, a net $26.1M across purchases and sales reported on Form 4, by 4 sellers.

Are there planned insider sales of ACMR?

Yes. 4 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-27, covering $15.3M of stock; the latest, by HUI WANG, was filed 2026-09-09.

Read the full summary

In the 180 days to 2026-10-27, ACM Research insiders were net sellers of ACMR, a net $26.1M across purchases and sales reported on Form 4 by 4 sellers. Most of that figure, $19.5M, came from a holder of 10% or more rather than an officer or director. 41% of the 37 insider sales were made under a Rule 10b5-1 plan; the rest were not flagged as planned. Insiders filed 4 Form 144 notices of intent to sell in the 90 days to 2026-10-27, covering $15.3M of stock. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.

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