SEC Form 4 reporting owner

McKechnie Mark

McKechnie Mark has filed 17 Form 4 transactions reported between December 4, 2025 and August 20, 2026, as a reporting owner of ACM Research, Inc..

Name as filed: McKechnie Mark

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$9.1M

11 lines

Companies

with Form 4 filings

Latest transaction

Aug 20, 2026

transaction date

Roles and reported holdings

ACMRACM Research, Inc.
Dec 4, 2025 – Aug 20, 2026
Reporting owner
Held directly900 sh as of Aug 20, 2026 · Form 4
24 months: $9.1M sold

Transaction history

All 17 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Aug 20, 2026	ACMR	Open-market saleCode S · direct	11,209	$77.89	$873K@ $77.89	900	Form 4
Aug 20, 2026	ACMR	Open-market saleCode S · direct	30,365	$77.45	$2.4M@ $77.45	12,109	Form 4
Aug 20, 2026	ACMR	Open-market saleCode S · direct	13,625	$76.34	$1.0M@ $76.34	42,474	Form 4
Aug 20, 2026	ACMR	Option exerciseCode M · direct	25,000	$13.89	$347K@ $13.89	56,099	Form 4
Aug 20, 2026	ACMR	Option exerciseCode M · direct	30,199	$19.49	$589K@ $19.49	31,099	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	564	$46.57	$26K@ $46.57	900	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	29,348	$45.74	$1.3M@ $45.74	1,464	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	8,639	$44.94	$388K@ $44.94	30,812	Form 4
Mar 12, 2026	ACMR	Option exerciseCode M · direct	38,551	$19.49	$751K@ $19.49	39,451	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	982	$46.55	$46K@ $46.55	900	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	47,108	$45.74	$2.2M@ $45.74	1,882	Form 4
Mar 12, 2026	ACMR	Open-market saleCode S · direct	11,910	$44.89	$535K@ $44.89	48,990	Form 4
Mar 12, 2026	ACMR	Option exerciseCode M · direct	60,000	$13.89	$833K@ $13.89	60,900	Form 4
Dec 8, 2025	ACMR	Option exerciseCode M · direct	22,500	$25.45	$573K@ $25.45	23,400	Form 4
Dec 4, 2025	ACMR	Open-market saleCode S · direct	996	$34.26	$34K@ $34.26	900	Form 4
Dec 4, 2025	ACMR	Open-market saleCode S · direct	7,754	$33.50	$260K@ $33.50	1,896	Form 4
Dec 4, 2025	ACMR	Option exerciseCode M · direct	8,750	$4.55	$40K@ $4.55	9,650	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.