Summary
Updated Aug 30, 2026
Xiao Xing files SEC Form 4 reports at ACM Research, Inc. (ACMR). 2 SEC Form 4 filings on record, most recently on 8 October 2024. Most recent open-market trade: sold $1.91M of ACMR on 8 October 2024. Lifetime open-market sales: $24.21M.
Recent Transactions
8Every recent SEC Form 4 transaction Xiao Xing has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Xiao Xing files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- David H. Wang - $21.81M of ACMR open-market activity in the last 12 months
- Mark McKechnie - $8.76M of ACMR open-market activity in the last 12 months
- Fuping Chen - $3.98M of ACMR open-market activity in the last 12 months
- Tracy Liu - $3.35M of ACMR open-market activity in the last 12 months
- Lisa Feng - $2.44M of ACMR open-market activity in the last 12 months
- Sotheara Cheav - $1.94M of ACMR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Xiao Xing?
Xiao Xing is a corporate insider of ACM Research, Inc. (ACMR). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Xiao Xing last file a Form 4?
The most recent primary Form 4 on record is dated 8 October 2024, one of 2 filings going back to 2024.
Has Xiao Xing been buying or selling stock?
Recorded transactions: 0 open-market purchases and 8 open-market sales ($24.21M) across all tracked filings.
Where can I see all of Xiao Xing's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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