Insider · CIK 0001721279

Cheav Sotheara

Reports to the SEC for 1 company · FREMONT, CA

sec.gov

Transactions

Companies

Filings

CIK

0001721279

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-06-05	ACMRACM Research, Inc.S Sale	See remarks	SSale	−2,384 sh	$81.73	−$195K	103,017
2026-06-05	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−5,399 sh	—	—	37,500
2026-06-05	ACMRACM Research, Inc.S Sale	See remarks	SSale	−1,647 sh	$85.41	−$141K	100,002
2026-06-05	ACMRACM Research, Inc.S Sale	See remarks	SSale	−400 sh	$84.01	−$33.6K	101,649
2026-06-05	ACMRACM Research, Inc.S Sale	See remarks	SSale	−968 sh	$82.61	−$80K	102,049
2026-06-05	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+5,399 sh	$13.89	+$75K	105,401
2026-06-04	ACMRACM Research, Inc.S Sale	See remarks	SSale	−2,839 sh	$85.77	−$244K	100,002
2026-06-04	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+13.4K sh	$13.89	+$185K	113,353
2026-06-04	ACMRACM Research, Inc.S Sale	See remarks	SSale	−1,300 sh	$84.08	−$109K	112,053
2026-06-04	ACMRACM Research, Inc.S Sale	See remarks	SSale	−9,212 sh	$85.11	−$784K	102,841
2026-06-04	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−13.4K sh	—	—	42,899
2025-09-18	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+10K sh	$13.89	+$139K	110,002
2025-09-18	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−10K sh	—	—	56,250
2025-09-18	ACMRACM Research, Inc.S Sale	See remarks	SSale	−10K sh	$35.00	−$350K	100,002
2025-08-22	ACMRACM Research, Inc.S Sale	See remarks	SSale	−11.2K sh	$30.00	−$335K	100,002
2025-08-22	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−11.2K sh	—	—	66,250
2025-08-22	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+11.2K sh	$13.89	+$155K	111,154
2025-02-06	ACMRACM Research, Inc.S Sale	See remarks	SSale	−22.6K sh	$23.00	−$520K	100,002
2025-02-06	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+10K sh	$13.89	+$139K	110,002
2025-02-06	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−12.6K sh	—	—	77,402
2025-02-06	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−10K sh	—	—	90,000
2025-02-06	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+12.6K sh	$13.89	+$175K	122,600
2024-03-14	ACMRACM Research, Inc.S Sale	See remarks	SSale	−2,383 sh	$28.32	−$67.5K	100,002
2024-03-14	ACMRACM Research, Inc.S Sale	See remarks	SSale	−2,617 sh	$27.49	−$71.9K	102,385
2024-03-13	ACMRACM Research, Inc.S Sale	See remarks	SSale	−5,000 sh	$29.09	−$145K	105,002
2023-11-13	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+13.5K sh	$5.33	+$72K	123,502
2023-11-13	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+12.5K sh	$4.62	+$57.8K	136,002
2023-11-13	ACMRACM Research, Inc.S Sale	See remarks	SSale	−26K sh	$16.79	−$437K	110,002
2023-11-13	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−13.5K sh	—	—	0
2023-11-13	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−12.5K sh	—	—	0
2023-08-10	ACMRACM Research, Inc. · Stock OptionA Award	See remarks	AAward	−100K sh	—	—	100,000
2023-08-10	ACMRACM Research, Inc. · Stock OptionA Award	See remarks	AAward	−100K sh	—	—	100,000
2023-06-06	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+22.5K sh	$4.62	+$104K	132,502
2023-06-06	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+16.5K sh	$5.33	+$87.9K	149,002
2023-06-06	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−16.5K sh	—	—	13,500
2023-06-06	ACMRACM Research, Inc.S Sale	See remarks	SSale	−39K sh	$10.00	−$390K	110,002
2022-08-18	ACMRACM Research, Inc.S Sale	See remarks	SSale	−10K sh	$17.50	−$175K	110,002
2022-08-17	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−5,000 sh	—	—	35,000
2022-08-17	ACMRACM Research, Inc.S Sale	See remarks	SSale	−5,818 sh	$18.29	−$106K	120,002
2022-08-17	ACMRACM Research, Inc.S Sale	See remarks	SSale	−9,182 sh	$17.50	−$161K	125,820
2022-08-17	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+5,000 sh	$4.62	+$23.1K	135,002
2022-08-16	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+5,000 sh	$4.62	+$23.1K	135,002
2022-08-16	ACMRACM Research, Inc.S Sale	See remarks	SSale	−5,000 sh	$19.42	−$97.1K	130,002
2022-08-16	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−5,000 sh	—	—	40,000
2022-06-06	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−22.5K sh	—	—	12,500
2021-04-09	ACMRACM Research, Inc.S Sale	See remarks	SSale	−13.1K sh	$86.64	−$1.14M	43,334
2021-04-08	ACMRACM Research, Inc.S Sale	See remarks	SSale	−5,000 sh	$88.66	−$443K	56,445
2021-04-08	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+5,000 sh	$13.85	+$69.3K	61,445
2021-04-08	ACMRACM Research, Inc. · Stock OptionM Exercise/Conversion	See remarks	MExercise/Conversion	−5,000 sh	—	—	15,000
2021-04-05	ACMRACM Research, Inc.M Exercise/Conversion	See remarks	MExercise/Conversion	+13.3K sh	$1.50	+$20K	56,668

Recent filings

Accepted (ET)
Jun 54
Cheav Sotheara0001140361-26-024322
SEC(opens sec.gov)
Sep 194
Cheav Sotheara0001140361-25-035583
SEC(opens sec.gov)
Aug 264
Cheav Sotheara0001140361-25-032733
SEC(opens sec.gov)
Feb 104
Cheav Sotheara0001140361-25-003749
SEC(opens sec.gov)

Companies

ACM Research, Inc.See remarksACMR

Address

C/O ACM RESEARCH, INC. 42307 OSGOOD ROAD, SUITE I

FREMONT, CA, 94539