Tracy Liu

CIK: 0001721299

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)6 (46.2%)

Position reduction

Option Exercises (M)4 (30.8%)

Derivative conversions

Awards (A)3 (23.1%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (2)

ACMR

ACM Research, Inc.

Director

AXTI

AXT INC

Director

Discretionary Trading P&L

Holdings

Transaction History (13 total)

ACMR
ACM Research, Inc.
Aug 12, 2026
Award(A)
Stock Option
Direct
6.4K shares-
ACMR
ACM Research, Inc.
Aug 12, 2026
Award(A)
Restricted Stock Units
Direct
728 shares-
ACMR
ACM Research, Inc.
Mar 11, 2026
Sale(S)
Direct
11.6K shares at avg. $47.81$556K
ACMR
ACM Research, Inc.
Mar 11, 2026
Exercise(M)
Direct
15K shares at avg. $1.00$15K
ACMR
ACM Research, Inc.
Mar 11, 2026
Sale(S)
Direct
3.4K shares at avg. $48.25$163K
ACMR
ACM Research, Inc.
Mar 10, 2026
Exercise(M)
Direct
45K shares at avg. $1.00$45K
ACMR
ACM Research, Inc.
Mar 10, 2026
Sale(S)
Direct
32.2K shares at avg. $47.06$1.5M
ACMR
ACM Research, Inc.
Mar 10, 2026
Sale(S)
Direct
12.8K shares at avg. $48.19$616K
ACMR
ACM Research, Inc.
Sep 17, 2025
Exercise(M)
Direct
15K shares at avg. $1.00$15K
ACMR
ACM Research, Inc.
Sep 17, 2025
Sale(S)
Direct
15K shares at avg. $33.00$495K
ACMR
ACM Research, Inc.
Aug 12, 2025
Award(A)
Stock Option
Direct
20K shares-
ACMR
ACM Research, Inc.
Jul 15, 2025
Exercise(M)
Direct
15K shares at avg. $1.00$15K
ACMR
ACM Research, Inc.
Jul 15, 2025
Sale(S)
Direct
15K shares at avg. $30.00$450K

		Type	Shares	Price		Ownership
Aug 12, 2026	ACMR ACM Research, Inc.	Award(A) Stock Option	6,400	-	-	Direct
Aug 12, 2026	ACMR ACM Research, Inc.	Award(A) Restricted Stock Units	728	-	-	Direct
Mar 11, 2026	ACMR ACM Research, Inc.	Sale(S)	11,623	$47.81	$555,696	Direct
Mar 11, 2026	ACMR ACM Research, Inc.	Exercise(M)	15,000	$1.00	$15,000	Direct
Mar 11, 2026	ACMR ACM Research, Inc.	Sale(S)	3,377	$48.25	$162,940	Direct
Mar 10, 2026	ACMR ACM Research, Inc.	Exercise(M)	45,000	$1.00	$45,000	Direct
Mar 10, 2026	ACMR ACM Research, Inc.	Sale(S)	32,216	$47.06	$1,516,085	Direct
Mar 10, 2026	ACMR ACM Research, Inc.	Sale(S)	12,784	$48.19	$616,061	Direct
Sep 17, 2025	ACMR ACM Research, Inc.	Exercise(M)	15,000	$1.00	$15,000	Direct
Sep 17, 2025	ACMR ACM Research, Inc.	Sale(S)	15,000	$33.00	$495,000	Direct
Aug 12, 2025	ACMR ACM Research, Inc.	Award(A) Stock Option	20,000	-	-	Direct
Jul 15, 2025	ACMR ACM Research, Inc.	Exercise(M)	15,000	$1.00	$15,000	Direct
Jul 15, 2025	ACMR ACM Research, Inc.	Sale(S)	15,000	$30.00	$450,000	Direct

1-13 of 13 transactions

About Liu Tracy

Liu Tracy (SEC CIK 0001721299) files insider reports with the SEC as Director of ACM Research, Inc. (ACMR) and Director of AXT INC (AXTI).

Signal8 holds 6 ownership filings by Liu Tracy (1 Form 3, 5 Form 4), filed between Jul 17, 2025 and Aug 26, 2026. Those filings report 13 transactions, from Jul 15, 2025 to Aug 12, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Liu Tracy's filings is in FREMONT, CA.

Recent filings by Liu Tracy

Aug 12, 2026: Grants or awards of ACMR derivative securities (2 lines, Form 4, code A).
Mar 11, 2026: Open-market sale of ACMR shares (Form 4, code S).
Mar 11, 2026: Option exercise of ACMR shares (Form 4, code M).
Mar 11, 2026: Open-market sale of ACMR shares (Form 4, code S).
Mar 10, 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