ACMR Insider Trading

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Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 25.00%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $24,520,038.50

ACM Research Insider Trading History Chart

ACM Research Share Price & Price History

^$34.62

▲ +0.68 (2.00%)

As of 12/4/2025 05:00 PM ET

Days: 30 | 90 | 365

ACM Research Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
12/3/2025	Fuping Chen	Insider	Sell	20,000	$33.06	$661,200.00
12/2/2025	Fuping Chen	Insider	Sell	100,000	$33.20	$3,320,000.00
11/13/2025	Lisa Feng	Insider	Sell	15,000	$33.77	$506,550.00	50,001
9/18/2025	Jian Wang	Insider	Sell	30,000	$35.00	$1,050,000.00	253,158
9/18/2025	Sotheara Cheav	Insider	Sell	10,000	$35.00	$350,000.00	100,002
9/17/2025	Tracy Liu	Director	Sell	15,000	$33.00	$495,000.00	110,772
9/4/2025	David H. Wang	Insider	Sell	60,000	$26.44	$1,586,400.00	672,708
9/3/2025	David H. Wang	Insider	Sell	70,000	$26.76	$1,873,200.00	672,708
8/25/2025	Jian Wang	Insider	Sell	30,000	$32.00	$960,000.00	253,158
8/22/2025	Jian Wang	Insider	Sell	30,000	$30.00	$900,000.00	253,158
8/22/2025	Sotheara Cheav	Insider	Sell	11,152	$30.00	$334,560.00	100,002
7/15/2025	Tracy Liu	Director	Sell	15,000	$30.00	$450,000.00	110,772
7/7/2025	Lisa Feng	Insider	Sell	15,000	$28.00	$420,000.00	50,001
6/24/2025	Lisa Feng	Insider	Sell	15,000	$26.00	$390,000.00	50,001
5/22/2025	David H. Wang	Insider	Sell	60,000	$22.63	$1,357,800.00	672,708
5/21/2025	David H. Wang	Insider	Sell	70,000	$23.60	$1,652,000.00	672,708
3/17/2025	Chenming Hu	Director	Sell	163,308	$30.00	$4,899,240.00	100,002
3/14/2025	Haiping Dun	Director	Sell	9,518	$29.00	$276,022.00	755,090
3/13/2025	David H. Wang	Insider	Sell	37,500	$27.30	$1,023,750.00	672,708
3/11/2025	David H. Wang	Insider	Sell	56,250	$26.57	$1,494,562.50	747,708
2/6/2025	Sotheara Cheav	Insider	Sell	22,598	$23.00	$519,754.00	100,002
11/26/2024	David H. Wang	Insider	Sell	56,250	$17.89	$1,006,312.50	654,256
11/22/2024	David H. Wang	Insider	Sell	56,250	$19.08	$1,073,250.00	710,506
11/22/2024	Haiping Dun	Director	Sell	15,000	$19.12	$286,800.00	774,148
10/8/2024	Xiao Xing	Director	Sell	90,396	$21.13	$1,910,067.48	2,338,510
10/7/2024	Science & Technology Shanghai	Major Shareholder	Sell	275,000	$24.07	$6,619,250.00	2,428,906
10/4/2024	Mark Mckechnie	Insider	Sell	16,516	$22.00	$363,352.00	900
10/4/2024	Xiao Xing	Director	Sell	700,000	$21.41	$14,987,000.00	2,703,906
10/2/2024	Science & Technology Shanghai	Major Shareholder	Sell	26,300	$20.01	$526,263.00	3,403,906
10/1/2024	Xiao Xing	Director	Sell	8,304	$20.19	$167,657.76	3,430,206
6/7/2024	Jian Wang	Insider	Sell	30,000	$22.07	$662,100.00	253,158
5/29/2024	David H. Wang	Insider	Sell	86,090	$22.62	$1,947,355.80	504,018
5/29/2024	Haiping Dun	Director	Sell	19,239	$22.63	$435,378.57	855,090
5/22/2024	David H. Wang	Insider	Sell	90,000	$22.81	$2,052,900.00	590,108
5/22/2024	Haiping Dun	Director	Sell	15,000	$22.88	$343,200.00	874,329
3/14/2024	Haiping Dun	Director	Sell	19,434	$27.70	$538,321.80	855,090
3/13/2024	Sotheara Cheav	Insider	Sell	5,000	$29.09	$145,450.00	105,002
3/8/2024	David H. Wang	Insider	Sell	90,000	$30.36	$2,732,400.00	591,107
3/8/2024	Haiping Dun	Director	Sell	15,000	$30.36	$455,400.00	874,524
2/28/2024	Lisa Feng	Insider	Sell	7,500	$25.20	$189,000.00	50,001
2/28/2024	Tracy Liu	Director	Sell	12,500	$25.20	$315,000.00	110,772
1/12/2024	Mark Mckechnie	Insider	Sell	10,000	$22.00	$220,000.00	900
12/26/2023	Lisa Feng	Insider	Sell	7,500	$20.00	$150,000.00	50,001
12/26/2023	Tracy Liu	Director	Sell	10,000	$20.00	$200,000.00	110,772
11/22/2023	David H. Wang	Insider	Sell	90,000	$17.68	$1,591,200.00	588,794
11/22/2023	Haiping Dun	Director	Sell	15,000	$17.66	$264,900.00	874,074
10/11/2023	Mark Mckechnie	Insider	Sell	11,250	$20.00	$225,000.00	900
9/12/2023	David H. Wang	Insider	Sell	90,000	$18.06	$1,625,400.00	589,134
9/1/2023	Mark Mckechnie	Insider	Sell	30,000	$18.00	$540,000.00	900
8/23/2023	Fuping Chen	insider	Sell	105,000	$15.00	$1,575,000.00
8/22/2023	Haiping Dun	Director	Sell	32,098	$13.85	$444,557.30	855,090
7/3/2023	Lisa Feng	Insider	Sell	22,500	$15.00	$337,500.00	50,001
6/6/2023	Sotheara Cheav	Insider	Sell	39,000	$10.00	$390,000.00	110,002
6/1/2023	Haiping Dun	Director	Sell	37,500	$10.00	$375,000.00	887,188
3/16/2023	Haiping Dun	Director	Sell	37,500	$12.06	$452,250.00	889,116
3/9/2023	Lisa Feng	Insider	Sell	22,500	$12.37	$278,325.00	50,001

SEC Filings (Institutional Ownership Changes) for ACM Research (NASDAQ:ACMR)

66.75% of ACM Research stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

ACM Research Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
11/21/2025	CIBC Bancorp USA Inc.	5,388	$0.21M	0.0%	N/A	0.009%
11/19/2025	Danske Bank A S	14,249	$0.56M	0.0%	N/A	0.024%
11/17/2025	CANADA LIFE ASSURANCE Co	45,036	$1.74M	0.0%	+679.4%	0.075%
11/17/2025	Caxton Associates LLP	6,738	$0.26M	0.0%	N/A	0.011%
11/17/2025	Dark Forest Capital Management LP	24,096	$0.94M	0.0%	+60.6%	0.040%
11/17/2025	Virtus Advisers LLC	28,954	$1.13M	0.8%	+917.4%	0.048%
11/17/2025	Wexford Capital LP	185,942	$7.28M	1.0%	+74.7%	0.311%
11/17/2025	Verition Fund Management LLC	17,400	$0.68M	0.0%	-26.5%	0.029%
11/17/2025	Seldon Capital LP	193,242	$7.56M	2.7%	N/A	0.323%
11/17/2025	Prelude Capital Management LLC	7,056	$0.28M	0.0%	N/A	0.012%
11/17/2025	Parallax Volatility Advisers L.P.	23,818	$0.93M	0.0%	N/A	0.040%
11/17/2025	Numerai GP LLC	6,114	$0.24M	0.0%	N/A	0.010%
11/17/2025	Mariner LLC	7,167	$0.28M	0.0%	-32.4%	0.012%
11/17/2025	Millennium Management LLC	210,338	$8.23M	0.0%	-58.8%	0.351%
11/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	24,864	$0.97M	0.0%	-14.5%	0.042%
11/17/2025	Bank of America Corp DE	185,834	$7.27M	0.0%	-23.2%	0.310%
11/17/2025	Boothbay Fund Management LLC	195,120	$7.64M	0.1%	+25.5%	0.326%
11/17/2025	Aquatic Capital Management LLC	5,539	$0.22M	0.0%	-90.7%	0.009%
11/17/2025	Algert Global LLC	58,794	$2.30M	0.0%	-75.1%	0.098%
11/17/2025	Alliancebernstein L.P.	49,967	$1.96M	0.0%	+2.9%	0.083%
11/17/2025	Ameriprise Financial Inc.	316,504	$12.42M	0.0%	+59.4%	0.529%
11/14/2025	Creative Planning	9,722	$0.38M	0.0%	+19.0%	0.016%
11/14/2025	Zacks Investment Management	5,756	$0.23M	0.0%	N/A	0.010%
11/14/2025	Raymond James Financial Inc.	42,943	$1.68M	0.0%	-17.6%	0.072%
11/14/2025	UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC	72,667	$2.84M	0.0%	-86.6%	0.121%
11/14/2025	Two Sigma Investments LP	194,338	$7.60M	0.0%	N/A	0.325%
11/14/2025	Cederberg Capital Ltd	496,500	$19.43M	5.5%	N/A	0.830%
11/14/2025	Oasis Management Co Ltd.	233,988	$9.16M	0.9%	-37.9%	0.391%
11/14/2025	Comerica Bank	14,713	$0.58M	0.0%	+113,076.9%	0.025%
11/14/2025	Portolan Capital Management LLC	405,860	$15.88M	0.9%	N/A	0.678%
11/14/2025	Dodge & Cox	122,892	$4.81M	0.0%	+51.5%	0.205%
11/13/2025	Entropy Technologies LP	9,880	$0.39M	0.0%	N/A	0.017%
11/13/2025	Eschler Asset Management LLP	13,904	$0.54M	0.4%	N/A	0.023%
11/13/2025	Advisory Research Inc.	25,935	$1.02M	0.1%	N/A	0.043%
11/13/2025	Invesco Ltd.	246,502	$9.65M	0.0%	-70.2%	0.412%
11/13/2025	Sei Investments Co.	22,086	$0.86M	0.0%	-21.1%	0.037%
11/13/2025	Kendall Capital Management	76,771	$3M	0.7%	+42.0%	0.128%
11/13/2025	Mackenzie Financial Corp	54,337	$2.13M	0.0%	-13.7%	0.091%
11/13/2025	Franklin Resources Inc.	33,245	$1.30M	0.0%	+4.2%	0.056%
11/13/2025	Legal & General Group Plc	138,293	$5.41M	0.0%	+138.0%	0.231%
11/13/2025	Swiss National Bank	102,600	$4.02M	0.0%	+2.1%	0.171%
11/13/2025	Russell Investments Group Ltd.	111,101	$4.35M	0.0%	-7.5%	0.186%
11/13/2025	Triata Capital Ltd	2,003,225	$78.39M	9.1%	+26.0%	3.347%
11/13/2025	Grantham Mayo Van Otterloo & Co. LLC	18,601	$0.73M	0.0%	N/A	0.031%
11/13/2025	First Trust Advisors LP	76,243	$2.98M	0.0%	-7.1%	0.127%
11/12/2025	Barclays PLC	96,663	$3.78M	0.0%	-27.6%	0.161%
11/12/2025	RPg Family Wealth Advisory LLC	156,670	$6.13M	1.3%	+64.2%	0.262%
11/12/2025	Picton Mahoney Asset Management	20,542	$0.80M	0.0%	N/A	0.034%
11/12/2025	Teachers Retirement System of The State of Kentucky	14,500	$0.57M	0.0%	N/A	0.024%
11/12/2025	Victory Capital Management Inc.	86,672	$3.39M	0.0%	+461.5%	0.145%
11/12/2025	Segall Bryant & Hamill LLC	107,980	$4.23M	0.1%	+9.8%	0.180%
11/12/2025	Intech Investment Management LLC	23,918	$0.94M	0.0%	-34.5%	0.040%
11/10/2025	Ameritas Investment Partners Inc.	4,223	$0.17M	0.0%	-18.9%	0.007%
11/10/2025	Empirical Financial Services LLC d.b.a. Empirical Wealth Management	21,248	$0.83M	0.0%	N/A	0.036%
11/7/2025	GSA Capital Partners LLP	11,423	$0.45M	0.0%	N/A	0.019%
11/7/2025	Vanguard Group Inc.	4,846,413	$189.64M	0.0%	+12.8%	8.192%
11/7/2025	JPMorgan Chase & Co.	28,688	$1.12M	0.0%	-79.2%	0.048%
11/6/2025	MidWestOne Financial Group Inc.	7,188	$0.28M	0.0%	N/A	0.012%
11/6/2025	Public Sector Pension Investment Board	205,115	$8.03M	0.0%	N/A	0.347%
11/6/2025	Cornerstone Investment Partners LLC	10,170	$0.40M	0.0%	-6.9%	0.017%
11/6/2025	Savvy Advisors Inc.	7,943	$0.31M	0.0%	N/A	0.013%
11/6/2025	LSV Asset Management	2,504,305	$97.99M	0.2%	+462.9%	4.233%
11/6/2025	Rhumbline Advisers	147,794	$5.78M	0.0%	+81.4%	0.250%
11/6/2025	Essex Investment Management Co. LLC	11,770	$0.46M	0.1%	-11.0%	0.020%
11/6/2025	ProShare Advisors LLC	15,624	$0.61M	0.0%	-4.7%	0.026%
11/5/2025	SBI Securities Co. Ltd.	832	$33K	0.0%	+78.9%	0.001%
11/4/2025	Illumine Investment Management LLC	31,380	$1.23M	0.9%	-1.5%	0.053%
11/4/2025	Jones Financial Companies Lllp	764	$29K	0.0%	+206.8%	0.001%
11/4/2025	Principal Financial Group Inc.	336,993	$13.19M	0.0%	+396.3%	0.570%
11/4/2025	Thrivent Financial for Lutherans	37,984	$1.49M	0.0%	N/A	0.064%
11/4/2025	Independent Advisor Alliance	5,797	$0.23M	0.0%	-27.5%	0.010%
11/3/2025	AlphaQuest LLC	8,517	$0.33M	0.0%	-58.4%	0.014%
11/3/2025	Arizona State Retirement System	15,649	$0.61M	0.0%	+2.5%	0.026%
11/3/2025	Mirae Asset Global Investments Co. Ltd.	6,841	$0.27M	0.0%	+36.8%	0.012%
11/3/2025	Federated Hermes Inc.	1,061,236	$41.53M	0.1%	-25.4%	1.794%
11/3/2025	Hussman Strategic Advisors Inc.	52,500	$2.05M	0.4%	N/A	0.089%
11/3/2025	Belpointe Asset Management LLC	25,272	$0.99M	0.0%	N/A	0.043%
10/31/2025	James Investment Research Inc.	20,511	$0.80M	0.1%	+27.4%	0.035%
10/31/2025	Mutual of America Capital Management LLC	5,896	$0.23M	0.0%	N/A	0.010%
10/31/2025	Resona Asset Management Co. Ltd.	3,200	$0.12M	0.0%	-58.6%	0.005%
10/31/2025	Mitsubishi UFJ Trust & Banking Corp	1,359,969	$53.22M	0.1%	-40.9%	2.299%
10/30/2025	Teacher Retirement System of Texas	48,619	$1.90M	0.0%	+1.6%	0.082%
10/30/2025	Bailard Inc.	16,469	$0.64M	0.0%	-4.8%	0.028%
10/29/2025	Violich Capital Management Inc.	5,900	$0.23M	0.0%	N/A	0.010%
10/29/2025	NorthCrest Asset Manangement LLC	33,570	$1.36M	0.0%	+27.8%	0.057%
10/29/2025	Wealth Enhancement Advisory Services LLC	17,291	$0.70M	0.0%	+2.0%	0.029%
10/29/2025	Amalgamated Bank	15,325	$0.60M	0.0%	+763.4%	0.026%
10/29/2025	Maryland State Retirement & Pension System	7,596	$0.30M	0.0%	N/A	0.013%
10/28/2025	Campbell & CO Investment Adviser LLC	51,822	$2.03M	0.2%	N/A	0.088%
10/24/2025	New York State Teachers Retirement System	11,135	$0.44M	0.0%	+5,760.5%	0.019%
10/24/2025	Oregon Public Employees Retirement Fund	12,100	$0.47M	0.0%	N/A	0.020%
10/24/2025	State of Alaska Department of Revenue	25,856	$1.01M	0.0%	N/A	0.044%
10/23/2025	Palouse Capital Management Inc.	3,931	$0.15M	0.1%	-23.1%	0.007%
10/23/2025	SG Americas Securities LLC	22,637	$0.89M	0.0%	N/A	0.038%
10/23/2025	Spire Wealth Management	16,581	$0.65M	0.0%	-4.9%	0.028%
10/22/2025	CoreCap Advisors LLC	16,203	$0.63M	0.0%	+1,323.8%	0.027%
10/20/2025	Allspring Global Investments Holdings LLC	31,326	$1.23M	0.0%	-1.9%	0.053%
10/17/2025	Perigon Wealth Management LLC	7,402	$0.29M	0.0%	-26.1%	0.013%
10/17/2025	Apollon Wealth Management LLC	9,025	$0.35M	0.0%	N/A	0.015%
10/17/2025	Matthews International Capital Management LLC	203,511	$7.96M	1.9%	-8.0%	0.344%

Data available starting January 2016

ACM Research, Inc., together with its subsidiaries, develops, manufactures, and sells single-wafer wet cleaning equipment for enhancing the manufacturing process and yield for integrated chips worldwide. It offers space alternated phase shift technology for flat and patterned wafer surfaces, which employs alternating phases of megasonic waves to deliver megasonic energy in a uniform manner on a microscopic level; timely energized bubble oscillation technology for patterned wafer surfaces at advanced process nodes, which provides cleaning for 2D and 3D patterned wafers; Tahoe technology for delivering cleaning performance using less sulfuric acid and hydrogen peroxide; and electro-chemical plating technology for advanced metal plating. The company markets and sells its products under the SAPS, TEBO, ULTRA C, ULTRA Fn, Ultra ECP, Ultra ECP map, and Ultra ECP ap trademarks through direct sales force and third-party representatives. ACM Research, Inc. was incorporated in 1998 and is headquartered in Fremont, California.

Today's Range

Now: $34.62

$32.91

$34.95

50 Day Range

MA: $36.71

$29.67

$43.78

52 Week Range

Now: $34.62

$13.87

$45.12

Volume

850,724 shs

Average Volume

1,243,541 shs

Market Capitalization

$2.07 billion

P/E Ratio

20.13

Dividend Yield

N/A

Beta

1.45

Who are the company insiders with the largest holdings of ACM Research?: ACM Research's top insider shareholders include:
Xiao Xing (Director)
Science & Technology Shanghai (Major Shareholder)
Haiping Dun (Director)
David H Wang (Insider)
Jian Wang (Insider)
Tracy Liu (Director)
Sotheara Cheav (Insider)
Chenming Hu (Director)
Lisa Feng (Insider)
Mark Mckechnie (Insider)
Learn More about top insider investors at ACM Research.
Who are the major institutional investors of ACM Research?: ACM Research's top institutional investors include:
Vanguard Group Inc. — 8.19%
LSV Asset Management — 4.23%
Triata Capital Ltd — 3.35%
Mitsubishi UFJ Trust & Banking Corp — 2.30%
Federated Hermes Inc. — 1.79%
Susquehanna International Group LLP — 0.00%
Learn More about top institutional investors of ACM Research stock.
Which institutional investors are selling ACM Research stock?: Within the last quarter, ACMR stock was sold by these institutional investors:
Mitsubishi UFJ Trust & Banking Corp
Invesco Ltd.
UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC
Federated Hermes Inc.
Millennium Management LLC
Susquehanna International Group LLP
Algert Global LLC
Oasis Management Co Ltd.
Within the previous year, company insiders that have sold ACM Research company stock include:
Xiao Xing (Director)
Science & Technology Shanghai (Major Shareholder)
Haiping Dun (Director)
David H Wang (Insider)
Jian Wang (Insider)
Tracy Liu (Director)
Sotheara Cheav (Insider)
Learn More investors selling ACM Research stock.
Which institutional investors are buying ACM Research stock?: In the last quarter, ACMR stock was acquired by institutional investors including:
LSV Asset Management
Vanguard Group Inc.
Cederberg Capital Ltd
Triata Capital Ltd
Portolan Capital Management LLC
Principal Financial Group Inc.
Public Sector Pension Investment Board
Two Sigma Investments LP