Who
Chris Siu
CFO
Company insider
Files Form 4 as: CFO, Aehr Test Systems; Chief Accounting Officer & SVP, Ultra Clean Holdings; Dir of Acct/Chief Acct Officer, Trident Microsystems.
In numbers
- Trades disclosed
- 85
- Buys
- 1
- Sells
- 4
- Bought
- $6,790
- Sold
- $615K
- Companies
- 3
- Companies where not an officer
- 0
- First trade
- 20 Feb 2007
- Last trade
- 12 Oct 2026
- Last filed
- 13 Oct 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 12 Oct 2026filed 13 Oct 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $84K987 at $84.64 | filing |
| 2 Oct 2026filed 5 Oct 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $125K1,164 at $107.21 | filing |
| 1 Oct 2026filed 1 Oct 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $20K194 at $101.60 | filing |
| 1 Oct 2026filed 1 Oct 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code J | $7,2661,089 at $6.67 | filing |
| 1 Sep 2026filed 1 Sep 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $38K496 at $76.59 | filing |
| 1 Sep 2026filed 1 Sep 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $38K496 at $76.59 | filing |
| 13 Jul 2026filed 13 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $72K988 at $72.60 | filing |
| 13 Jul 2026filed 13 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $72K988 at $72.60 | filing |
| 2 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $80K1,139 at $69.96 | filing |
| 2 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $80K1,139 at $69.96 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code A | —6,165 at $0.00 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code A | —6,079 at $0.00 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $187K2,213 at $84.43 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code A | —6,165 at $0.00 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code A | —6,079 at $0.00 | filing |
| 1 Jul 2026filed 2 Jul 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $187K2,213 at $84.43 | filing |
| 1 Jun 2026filed 1 Jun 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $33K350 at $93.62 | filing |
| 1 Jun 2026filed 1 Jun 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Code F | $33K350 at $93.62 | filing |
| 14 May 2026filed 15 May 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Sold | $51K470 at $108.00 | filing |
| 14 May 2026filed 15 May 2026 | AEHR Aehr Test SystemsLife-science tools | SEC FORM 4 Sold | $171K1,600 at $106.78 | filing |
News
IQM Quantum Computers (NASDAQ:IQMX) & Aehr Test Systems (NASDAQ:AEHR) Critical ReviewAEHR · themarketsdaily.com · 22 Oct 2026Head-To-Head Survey: GlobalFoundries (NASDAQ:GFS) vs. Aehr Test Systems (NASDAQ:AEHR)AEHR · dailypolitical.com · 13 Oct 2026Head-To-Head Review: Aehr Test Systems (NASDAQ:AEHR) vs. onsemi (NASDAQ:ON)AEHR · tickerreport.com · 12 Oct 2026
0 headlines in the last 90 days name Chris Siu; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.