Summary
Updated Aug 31, 2026
Chris Siu is CFO of AEHR TEST SYSTEMS (AEHR). 20 SEC Form 4 filings on record going back to 2024, most recently on 13 July 2026.
Recent Transactions
20Every recent SEC Form 4 transaction Chris Siu has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Chris Siu go back to 2024: 20 primary Form 4 filings, an average of 6.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Chris Siu 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.
- Gayn Erickson - $16.02M of AEHR open-market activity in the last 12 months
- Geoffrey Gates Scott - $12.31M of AEHR open-market activity in the last 12 months
- Rhea J. Posedel - $9.55M of AEHR open-market activity in the last 12 months
- Howard T. Slayen - $5.20M of AEHR open-market activity in the last 12 months
- Alberto Salamone - $4.00M of AEHR open-market activity in the last 12 months
- Adil Engineer - $3.10M of AEHR 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 Chris Siu?
Chris Siu is a corporate insider, tracked as CFO of AEHR TEST SYSTEMS (AEHR). InsiderAlpha holds 20 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Chris Siu submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Where can I see all of Chris Siu'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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