Insider Trading & Ownership - Dun Haiping

Real time insider trading transaction history:

  • Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Insider Trading Transactions for Dun Haiping
Common stock purchase or sale:
Transaction
Date		 Reported
DateTime		 Company Symbol Insider
Relationship		 Shares
Traded		 Average
Price		 Total
Amount		 Shares
Owned		 Filing
2025-03-14
Sale		 2025-03-18
9:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 9,518 $29 $275,976 855,090
(Indirect
Direct)		 View
2025-03-10
Sale		 2025-03-12
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,001 $26.54 $398,127 864,608
(Indirect
Direct)		 View
2024-11-29
Sale		 2024-12-03
4:32 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 19,058 $17.43 $332,181 855,090
(Indirect
Direct)		 View
2024-11-22
Sale		 2024-11-26
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,000 $19.12 $286,800 874,148
(Indirect
Direct)		 View
2024-08-29
Sale		 2024-09-03
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 19,097 $18.08 $345,274 855,090
(Indirect
Direct)		 View
2024-08-22
Sale		 2024-08-26
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,000 $19.85 $297,750 874,187
(Indirect
Direct)		 View
2024-05-29
Sale		 2024-05-31
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 19,239 $22.63 $435,379 855,090
(Direct)		 View
2024-05-22
Sale		 2024-05-24
4:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,000 $22.88 $343,200 874,329
(Direct)		 View
2024-03-14
Sale		 2024-03-15
9:32 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 19,434 $27.7 $538,376 855,090
(Direct)		 View
2024-03-08
Sale		 2024-03-12
9:30 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,000 $30.36 $455,400 874,524
(Direct)		 View
2023-11-29
Sale		 2023-12-01
4:15 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 18,984 $17.25 $327,474 855,090
(Direct)		 View
2023-11-22
Sale		 2023-11-27
4:24 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 15,000 $17.66 $264,900 874,074
(Direct)		 View
2023-08-22
Sale		 2023-08-24
8:13 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 32,098 $13.85 $444,557 855,090
(Direct)		 View
2023-06-01
Sale		 2023-06-05
6:26 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $10 $375,000 887,188
(Direct)		 View
2023-03-16
Sale		 2023-03-20
8:55 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $12.06 $452,250 889,116
(Direct)		 View
2022-11-30
Sale		 2022-12-02
5:31 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 35,327 $8.43 $297,807 890,620
(Direct)		 View
2022-08-22
Sale		 2022-08-24
9:01 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 36,537 $16.1 $588,246 855,090
(Direct)		 View
2022-08-15
Sale		 2022-08-17
6:00 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 36,519 $19.28 $704,086 1,241,628
(Direct)		 View
2022-05-27
Sale		 2022-05-31
9:03 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 36,150 $15 $542,250 855,090
(Direct)		 View
2022-03-09
Sale		 2022-03-11
5:08 pm		 ACM Research Inc. ACMR Dun Haiping
Director		 12,269 $82.09 $1,007,102 297,530
(Direct)		 View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date		 Reported
DateTime		 Exercisable
Expiration		 Company Symnbol Insider
Relationship		 Shares
Traded		 Conversion
Price		 Shares
Owned		 Filing
2025-03-03
Tax Withholding		 2025-03-05
4:30 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 482 $25.94 879,609
(Direct)		 View
2025-03-03
Exercise		 2025-03-05
4:30 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 25,001 $0.5 879,609
(Direct)		 View
2025-03-03
Exercise		 2025-03-05
4:30 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 25,001 $0 879,609
(Direct)		 View
2024-11-14
Exercise		 2024-11-18
4:32 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0.5 914,149
(Direct)		 View
2024-11-14
Exercise		 2024-11-18
4:32 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0 914,149
(Direct)		 View
2024-11-14
Tax Withholding		 2024-11-18
4:32 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 942 $18.59 914,149
(Direct)		 View
2024-08-12
Option Award		 2024-08-20
9:00 pm		 N/A
2034-08-11		 ACM Research Inc. ACMR Dun Haiping
Director		 20,000 $0 20,000
(Direct)		 View
2024-08-14
Exercise		 2024-08-16
9:02 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0.5 949,188
(Direct)		 View
2024-08-14
Tax Withholding		 2024-08-16
9:02 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 903 $19.38 949,188
(Direct)		 View
2024-08-14
Exercise		 2024-08-16
9:02 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0 949,188
(Direct)		 View
2024-06-27
Gift		 2024-07-01
4:30 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 400,000 $0 400,000
(Direct)		 View
2024-05-14
Exercise		 2024-05-16
09:00 am		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0.5 984,330
(Direct)		 View
2024-05-14
Tax Withholding		 2024-05-16
09:00 am		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 761 $23.02 984,330
(Direct)		 View
2024-05-14
Exercise		 2024-05-16
09:00 am		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0 984,330
(Direct)		 View
2024-03-01
Exercise		 2024-03-05
9:31 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0.5 1,019,525
(Direct)		 View
2024-03-01
Exercise		 2024-03-05
9:31 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0 1,019,525
(Direct)		 View
2024-03-01
Tax Withholding		 2024-03-05
9:31 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 566 $30.92 1,019,525
(Direct)		 View
2023-11-14
Exercise		 2023-11-16
4:15 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0.5 1,054,075
(Direct)		 View
2023-11-14
Tax Withholding		 2023-11-16
4:15 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 1,016 $17.23 1,054,075
(Direct)		 View
2023-11-14
Exercise		 2023-11-16
4:15 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 35,000 $0 1,054,075
(Direct)		 View
2023-08-10
Option Award(A)		 2023-08-21
9:19 pm		 N/A
2033-08-09		 ACM Research Inc. ACMR Dun Haiping
Director		 54,000 $0 54,000
(Direct)		 View
2023-08-10
Option Award		 2023-08-14
5:31 pm		 N/A
2033-08-09		 ACM Research Inc. ACMR Dun Haiping
Director		 54,000 $0 54,000
(Direct)		 View
2023-05-22
Exercise		 2023-05-24
6:33 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,124,689
(Direct)		 View
2023-05-22
Tax Withholding		 2023-05-24
6:33 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 1,928 $9.73 1,124,689
(Direct)		 View
2023-05-22
Exercise		 2023-05-24
6:33 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,124,689
(Direct)		 View
2023-03-09
Exercise		 2023-03-13
9:02 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,164,117
(Direct)		 View
2023-03-09
Exercise		 2023-03-13
9:02 pm		 N/A
2025-04-30		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,164,117
(Direct)		 View
2023-03-09
Tax Withholding		 2023-03-13
9:02 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 1,504 $12.47 1,164,117
(Direct)		 View
2022-11-22
Exercise		 2022-11-25
5:30 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,200,948
(Direct)		 View
2022-11-22
Tax Withholding		 2022-11-25
5:30 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 2,173 $8.63 1,200,948
(Direct)		 View
2022-11-22
Exercise		 2022-11-25
5:30 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,200,948
(Direct)		 View
2022-11-14
Exercise		 2022-11-15
9:03 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,203,121
(Direct)		 View
2022-11-14
Exercise		 2022-11-15
9:03 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,203,121
(Direct)		 View
2022-11-14
Tax Withholding		 2022-11-15
9:03 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 1,970 $9.52 1,203,121
(Direct)		 View
2022-08-15
Exercise		 2022-08-17
6:00 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,241,628
(Direct)		 View
2022-08-15
Tax Withholding		 2022-08-17
6:00 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 963 $19.49 1,241,628
(Direct)		 View
2022-08-15
Exercise		 2022-08-17
6:00 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,241,628
(Direct)		 View
2022-08-08
Exercise		 2022-08-10
5:00 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,279,110
(Direct)		 View
2022-08-08
Exercise		 2022-08-10
5:00 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,279,110
(Direct)		 View
2022-08-08
Tax Withholding		 2022-08-10
5:00 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 981 $19.13 1,279,110
(Direct)		 View
2022-06-30
Option Award		 2022-07-05
5:31 pm		 N/A
2032-06-29		 ACM Research Inc. ACMR Dun Haiping
Director		 24,000 $0 24,000
(Direct)		 View
2022-05-18
Exercise		 2022-05-20
9:50 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0.5 1,316,241
(Direct)		 View
2022-05-18
Exercise		 2022-05-20
9:50 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 37,500 $0 1,316,241
(Direct)		 View
2022-05-18
Tax Withholding		 2022-05-20
9:50 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 1,350 $13.89 1,316,241
(Direct)		 View
2022-03-09
Exercise		 2022-03-11
5:08 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 12,269 $1.5 297,530
(Direct)		 View
2022-03-09
Exercise		 2022-03-11
5:08 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 12,269 $0 297,530
(Direct)		 View
2022-03-02
Tax Withholding		 2022-03-04
5:26 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 231 $81.46 451,466
(Direct)		 View
2022-03-02
Exercise		 2022-03-04
5:26 pm		 N/A
N/A		 ACM Research Inc. ACMR Dun Haiping
Director		 12,500 $1.5 451,466
(Direct)		 View
2022-03-02
Exercise		 2022-03-04
5:26 pm		 N/A
2025-05-01		 ACM Research Inc. ACMR Dun Haiping
Director		 12,500 $0 451,466
(Direct)		 View
2021-02-22
Option Award(A)		 2021-03-05
9:46 pm		 N/A
2031-02-21		 ACM Research Inc. ACMR Dun Haiping
Director		 5,000 $0 5,000
(Direct)		 View
2021-02-22
Option Award		 2021-03-03
5:30 pm		 N/A
2031-02-21		 ACM Research Inc. ACMR Dun Haiping
Director		 5,000 $0 5,000
(Direct)		 View
(A) Indicate amendment filing.