Sotheara Cheav

CIK: 0001721279

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)10 (62.5%)

Position reduction

Option Exercises (M)6 (37.5%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ACMR

ACM Research, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (16 total)

ACMR
ACM Research, Inc.
Jun 5, 2026
Sale(S)
Direct
400 shares at avg. $84.01$34K
ACMR
ACM Research, Inc.
Jun 5, 2026
Exercise(M)
Direct
5.4K shares at avg. $13.89$75K
ACMR
ACM Research, Inc.
Jun 5, 2026
Sale(S)
Direct
2.4K shares at avg. $81.73$195K
ACMR
ACM Research, Inc.
Jun 5, 2026
Sale(S)
Direct
968 shares at avg. $82.61$80K
ACMR
ACM Research, Inc.
Jun 5, 2026
Sale(S)
Direct
1.6K shares at avg. $85.41$141K
ACMR
ACM Research, Inc.
Jun 4, 2026
Sale(S)
Direct
2.8K shares at avg. $85.77$244K
ACMR
ACM Research, Inc.
Jun 4, 2026
Exercise(M)
Direct
13.4K shares at avg. $13.89$185K
ACMR
ACM Research, Inc.
Jun 4, 2026
Sale(S)
Direct
1.3K shares at avg. $84.08$109K
ACMR
ACM Research, Inc.
Jun 4, 2026
Sale(S)
Direct
9.2K shares at avg. $85.11$784K
ACMR
ACM Research, Inc.
Sep 18, 2025
Exercise(M)
Direct
10K shares at avg. $13.89$139K
ACMR
ACM Research, Inc.
Sep 18, 2025
Sale(S)
Direct
10K shares at avg. $35.00$350K
ACMR
ACM Research, Inc.
Aug 22, 2025
Exercise(M)
Direct
11.2K shares at avg. $13.89$155K
ACMR
ACM Research, Inc.
Aug 22, 2025
Sale(S)
Direct
11.2K shares at avg. $30.00$335K
ACMR
ACM Research, Inc.
Feb 6, 2025
Exercise(M)
Direct
10K shares at avg. $13.89$139K
ACMR
ACM Research, Inc.
Feb 6, 2025
Exercise(M)
Direct
12.6K shares at avg. $13.89$175K
ACMR
ACM Research, Inc.
Feb 6, 2025
Sale(S)
Direct
22.6K shares at avg. $23.00$520K

		Type	Shares	Price		Ownership
Jun 5, 2026	ACMR ACM Research, Inc.	Sale(S)	400	$84.01	$33,604	Direct
Jun 5, 2026	ACMR ACM Research, Inc.	Exercise(M)	5,399	$13.89	$74,992	Direct
Jun 5, 2026	ACMR ACM Research, Inc.	Sale(S)	2,384	$81.73	$194,844	Direct
Jun 5, 2026	ACMR ACM Research, Inc.	Sale(S)	968	$82.61	$79,966	Direct
Jun 5, 2026	ACMR ACM Research, Inc.	Sale(S)	1,647	$85.41	$140,670	Direct
Jun 4, 2026	ACMR ACM Research, Inc.	Sale(S)	2,839	$85.77	$243,501	Direct
Jun 4, 2026	ACMR ACM Research, Inc.	Exercise(M)	13,351	$13.89	$185,445	Direct
Jun 4, 2026	ACMR ACM Research, Inc.	Sale(S)	1,300	$84.08	$109,304	Direct
Jun 4, 2026	ACMR ACM Research, Inc.	Sale(S)	9,212	$85.11	$784,033	Direct
Sep 18, 2025	ACMR ACM Research, Inc.	Exercise(M)	10,000	$13.89	$138,900	Direct
Sep 18, 2025	ACMR ACM Research, Inc.	Sale(S)	10,000	$35.00	$350,000	Direct
Aug 22, 2025	ACMR ACM Research, Inc.	Exercise(M)	11,152	$13.89	$154,901	Direct
Aug 22, 2025	ACMR ACM Research, Inc.	Sale(S)	11,152	$30.00	$334,560	Direct
Feb 6, 2025	ACMR ACM Research, Inc.	Exercise(M)	10,000	$13.89	$138,900	Direct
Feb 6, 2025	ACMR ACM Research, Inc.	Exercise(M)	12,598	$13.89	$174,986	Direct
Feb 6, 2025	ACMR ACM Research, Inc.	Sale(S)	22,598	$23.00	$519,754	Direct

1-16 of 16 transactions

About Cheav Sotheara

Cheav Sotheara (SEC CIK 0001721279) files insider reports with the SEC as Officer of ACM Research, Inc. (ACMR).

Signal8 holds 4 ownership filings by Cheav Sotheara, all Form 4s, filed between Feb 10, 2025 and Jun 5, 2026. Those filings report 16 transactions, from Feb 6, 2025 to Jun 5, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Cheav Sotheara's filings is in FREMONT, CA.

Recent filings by Cheav Sotheara

Jun 5, 2026: Open-market sale of ACMR shares (Form 4, code S).
Jun 5, 2026: Option exercise of ACMR shares (Form 4, code M).
Jun 5, 2026: Open-market sales of ACMR shares (3 lines, Form 4, code S).
Jun 4, 2026: Open-market sale of ACMR shares (Form 4, code S).
Jun 4, 2026: Option exercise of ACMR shares (Form 4, code M).

Other insiders filing for ACM Research, Inc. (ACMR)

How to read Form 4 transaction codes