Stocks
ACMR ACM Research, Inc.

ACMR

ACM Research, Inc.

Company with tickers: ACMR

CIK

1680062

CUSIP

00108J109

Shares Outstanding

64,117,679

Price History Institutional Holders Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-19	Dun Haiping	Director	Convert	5,000	$5.60	$28,000	5,000
2026-05-19	Dun Haiping	Director	Sell	1,333	$63.84	$85,099	3,667
2026-05-19	Dun Haiping	Director	Other	755,090	—	—	755,090
2026-05-19	Dun Haiping	Director	Other	100,000	—	—	100,000
2026-05-19	Dun Haiping	Director	Sell	1,309	$67.21	$87,978	1,858
2026-05-19	Dun Haiping	Director	Convert	5,000	—	—	50,000
2026-05-19	Dun Haiping	Director	Sell	500	$65.09	$32,545	3,167
2026-05-19	Dun Haiping	Director	Sell	1,858	$67.54	$125,489	0
2026-04-17	Pappis Charles C	Director	Convert	5,000	—	—	0
2026-04-17	Pappis Charles C	Director	Convert	5,000	$29.18	$145,900	5,000
2026-04-17	Pappis Charles C	Director	Sell	5,000	$52.00	$260,000	0
2026-03-12	McKechnie Mark	See Remarks	Sell	29,348	$45.74	$1,342,378	1,464
2026-03-12	McKechnie Mark	See Remarks	Sell	982	$46.55	$45,712	900
2026-03-12	McKechnie Mark	See Remarks	Convert	38,551	—	—	61,449
2026-03-12	McKechnie Mark	See Remarks	Convert	60,000	—	—	240,000
2026-03-12	McKechnie Mark	See Remarks	Sell	47,108	$45.74	$2,154,720	1,882
2026-03-12	McKechnie Mark	See Remarks	Sell	564	$46.57	$26,265	900
2026-03-12	McKechnie Mark	See Remarks	Convert	38,551	$19.49	$751,359	39,451
2026-03-12	McKechnie Mark	See Remarks	Convert	60,000	$13.89	$833,400	60,900
2026-03-12	McKechnie Mark	See Remarks	Sell	8,639	$44.94	$388,237	30,812
2026-03-12	McKechnie Mark	See Remarks	Sell	11,910	$44.89	$534,640	48,990
2026-03-12	Wang David H	Director, See Remarks, 10% Owner	Convert	50,000	$1.00	$50,000	852,708
2026-03-12	Wang David H	Director, See Remarks, 10% Owner	Convert	50,000	—	—	370,002
2026-03-12	Wang David H	Director, See Remarks, 10% Owner	Sell	10,561	$44.92	$474,400	842,147
2026-03-12	Wang David H	Director, See Remarks, 10% Owner	Sell	38,737	$45.74	$1,771,830	803,410
2026-03-12	Wang David H	Director, See Remarks, 10% Owner	Sell	702	$46.57	$32,692	802,708
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Sell	55,373	$47.89	$2,651,813	807,335
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Convert	60,000	$1.00	$60,000	862,708
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Other	45,837	—	—	45,837
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Convert	60,000	—	—	420,002
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Sell	4,627	$48.34	$223,669	802,708
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Other	180,000	—	—	180,000
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Other	620,001	—	—	620,001
2026-03-11	Wang David H	Director, See Remarks, 10% Owner	Other	100,002	—	—	100,002
2026-03-11	Liu Tracy	Director	Convert	15,000	—	—	0
2026-03-11	Liu Tracy	Director	Sell	3,377	$48.25	$162,940	110,772
2026-03-11	Liu Tracy	Director	Sell	11,623	$47.81	$555,696	114,149
2026-03-11	Liu Tracy	Director	Convert	15,000	$1.00	$15,000	125,772
2026-03-10	Liu Tracy	Director	Convert	45,000	$1.00	$45,000	155,772
2026-03-10	Liu Tracy	Director	Sell	12,784	$48.19	$616,061	110,772
2026-03-10	Liu Tracy	Director	Sell	32,216	$47.06	$1,516,085	123,556
2026-03-10	Liu Tracy	Director	Convert	45,000	—	—	15,000
2026-03-09	Dun Haiping	Director	Convert	5,000	—	—	55,000
2026-03-09	Dun Haiping	Director	Other	100,000	—	—	100,000
2026-03-09	Dun Haiping	Director	Sell	4,100	$43.37	$177,817	900
2026-03-09	Dun Haiping	Director	Sell	900	$43.94	$39,546	0
2026-03-09	Dun Haiping	Director	Convert	5,000	$5.60	$28,000	5,000
2026-03-09	Dun Haiping	Director	Other	755,090	—	—	755,090
2026-03-06	Feng Lisa	See remarks	Convert	15,000	$4.55	$68,250	65,001
2026-03-06	Feng Lisa	See remarks	Sell	200	$46.58	$9,316	50,001
2026-03-06	Feng Lisa	See remarks	Sell	14,800	$46.07	$681,836	50,201
2026-03-06	Feng Lisa	See remarks	Convert	15,000	—	—	0
2026-03-05	Feng Lisa	See remarks	Sell	8,050	$49.81	$400,971	56,951
2026-03-05	Feng Lisa	See remarks	Convert	15,000	—	—	0
2026-03-05	Feng Lisa	See remarks	Sell	6,950	$50.24	$349,168	50,001
2026-03-05	Feng Lisa	See remarks	Convert	15,000	$4.55	$68,250	65,001
2026-03-05	Pappis Charles C	Director	Convert	5,000	$29.18	$145,900	5,000
2026-03-05	Pappis Charles C	Director	Sell	5,000	$50.09	$250,450	0
2026-03-05	Pappis Charles C	Director	Convert	5,000	—	—	5,000
2026-02-04	Wang David H	Director, See Remarks, 10% Owner	Other	100,002	—	—	100,002
2026-02-04	Wang David H	Director, See Remarks, 10% Owner	Other	180,000	—	—	180,000
2026-02-04	Wang David H	Director, See Remarks, 10% Owner	Other	620,001	—	—	620,001
2026-02-04	Wang David H	Director, See Remarks, 10% Owner	Award	545,400	—	—	1,636,197
2026-02-04	Wang David H	Director, See Remarks, 10% Owner	Other	45,837	—	—	45,837
2025-12-08	McKechnie Mark	See Remarks	Convert	22,500	—	—	0
2025-12-08	McKechnie Mark	See Remarks	Sell	22,500	$35.45	$797,625	900
2025-12-08	McKechnie Mark	See Remarks	Convert	22,500	$25.45	$572,625	23,400
2025-12-04	McKechnie Mark	See Remarks	Convert	8,750	$4.55	$39,813	9,650
2025-12-04	McKechnie Mark	See Remarks	Sell	7,754	$33.50	$259,759	1,896
2025-12-04	McKechnie Mark	See Remarks	Sell	996	$34.26	$34,123	900
2025-12-04	McKechnie Mark	See Remarks	Convert	8,750	—	—	0
2025-12-04	Wang David H	Director, See Remarks, 10% Owner	Convert	60,000	$1.00	$60,000	862,708
2025-12-04	Wang David H	Director, See Remarks, 10% Owner	Sell	40,183	$34.42	$1,383,099	802,708
2025-12-04	Wang David H	Director, See Remarks, 10% Owner	Sell	19,817	$33.52	$664,266	842,891
2025-12-04	Wang David H	Director, See Remarks, 10% Owner	Convert	60,000	—	—	480,002
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Convert	70,000	—	—	540,002
2025-12-03	Chen Fuping	See remarks	Sell	19,700	$33.05	$651,085	300
2025-12-03	Chen Fuping	See remarks	Convert	20,000	—	—	21,165
2025-12-03	Chen Fuping	See remarks	Sell	300	$33.57	$10,071	0
2025-12-03	Chen Fuping	See remarks	Convert	20,000	$1.77	$35,400	20,000
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Other	45,837	—	—	45,837
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Other	100,002	—	—	100,002
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Convert	70,000	$1.00	$70,000	872,708
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Sell	68,800	$33.05	$2,273,840	803,908
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Sell	1,200	$33.56	$40,272	802,708
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Other	620,001	—	—	620,001
2025-12-03	Wang David H	Director, See Remarks, 10% Owner	Other	180,000	—	—	180,000
2025-12-02	Chen Fuping	See remarks	Convert	100,000	—	—	41,165
2025-12-02	Chen Fuping	See remarks	Sell	100,000	$33.20	$3,320,000	0
2025-12-02	Chen Fuping	See remarks	Convert	100,000	$1.77	$177,000	100,000
2025-11-13	Feng Lisa	See remarks	Convert	15,000	—	—	0
2025-11-13	Feng Lisa	See remarks	Sell	15,000	$33.77	$506,550	50,001
2025-11-13	Feng Lisa	See remarks	Convert	15,000	$5.60	$84,000	65,001
2025-11-12	Dun Haiping	Director	Gift	755,090	—	—	0
2025-11-12	Dun Haiping	Director	Other	755,090	—	—	755,090
2025-11-12	Feng Lisa	See remarks	Convert	15,000	—	—	15,000
2025-11-12	Feng Lisa	See remarks	Convert	15,000	$5.60	$84,000	65,001
2025-11-12	Feng Lisa	See remarks	Sell	15,000	$32.76	$491,400	50,001
2025-10-27	Wang David H	Director, See Remarks, 10% Owner	Other	620,001	—	—	620,001
2025-10-27	Wang David H	Director, See Remarks, 10% Owner	Other	45,837	—	—	45,837