SEC Form 4 reporting owner

Liu Tracy

Liu Tracy has filed 8 Form 4 transactions reported between March 10, 2026 and August 12, 2026, as a reporting owner of ACM Research, Inc..

Name as filed: Liu Tracy

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$2.9M

4 lines

Companies

with Form 4 filings

Latest transaction

Aug 12, 2026

transaction date

Roles and reported holdings

ACMRACM Research, Inc.
Mar 10, 2026 – Aug 12, 2026
Reporting owner
Held directly110,772 sh as of Mar 11, 2026 · Form 4
24 months: $2.9M sold

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Aug 12, 2026	ACMR	Grant or awardCode A · direct	728	—	—	728	Form 4
Aug 12, 2026	ACMR	Grant or awardCode A · direct	6,400	—	—	6,400	Form 4
Mar 11, 2026	ACMR	Open-market saleCode S · direct	3,377	$48.25	$163K@ $48.25	110,772	Form 4
Mar 11, 2026	ACMR	Open-market saleCode S · direct	11,623	$47.81	$556K@ $47.81	114,149	Form 4
Mar 11, 2026	ACMR	Option exerciseCode M · direct	15,000	$1.00	$15K@ $1.00	125,772	Form 4
Mar 10, 2026	ACMR	Open-market saleCode S · direct	12,784	$48.19	$616K@ $48.19	110,772	Form 4
Mar 10, 2026	ACMR	Open-market saleCode S · direct	32,216	$47.06	$1.5M@ $47.06	123,556	Form 4
Mar 10, 2026	ACMR	Option exerciseCode M · direct	45,000	$1.00	$45K@ $1.00	155,772	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.