Chris Siu Aehr Test Systems (AEHR) insider trading activity

Chris Siu is CFO of AEHR TEST SYSTEMS. Currently has a direct ownership of 72,626 shares of AEHR, which is worth approximately $1.53 Million. The most recent transaction as insider was on Jan 11, 2026, when has been sold 799 shares (Common Stock) at a price of $26.32 per share, resulting in proceeds of $21,029. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 72.6K

2.79% 3M change

69.59% 12M change

Total Value Held $1.53 Million

Chris Siu Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jan 11 2026	SELL Payment of exercise price or tax liability	$21,029 $26.32 p/Share	799 Reduced 1.09%	72,626 Common Stock
Jan 02 2026	SELL Payment of exercise price or tax liability	$20,830 $22.16 p/Share	940 Reduced 1.26%	73,425 Common Stock
Dec 01 2025	SELL Payment of exercise price or tax liability	$7,862 $22.53 p/Share	349 Reduced 0.47%	74,365 Common Stock
Oct 13 2025	SELL Payment of exercise price or tax liability	$16,325 $23.49 p/Share	695 Reduced 0.92%	74,714 Common Stock
Oct 02 2025	SELL Payment of exercise price or tax liability	$4,063 $32.25 p/Share	126 Reduced 0.17%	75,409 Common Stock
Oct 02 2025	SELL Payment of exercise price or tax liability	$22,381 $32.25 p/Share	694 Reduced 0.91%	75,535 Common Stock
Sep 02 2025	SELL Payment of exercise price or tax liability	$8,683 $24.88 p/Share	349 Reduced 0.46%	76,229 Common Stock

Jul 11 2025	SELL Payment of exercise price or tax liability	$14,744 $14.11 p/Share	1,045 Reduced 1.35%	76,578 Common Stock
Jul 02 2025	SELL Payment of exercise price or tax liability	$11,377 $15.13 p/Share	752 Reduced 0.96%	77,623 Common Stock
Jul 02 2025	BUY Grant, award, or other acquisition	-	36,584 Added 31.82%	78,375 Common Stock
Jun 02 2025	SELL Payment of exercise price or tax liability	$5,061 $9.66 p/Share	524 Reduced 1.24%	41,791 Common Stock
Apr 11 2025	SELL Payment of exercise price or tax liability	$7,122 $8.52 p/Share	836 Reduced 1.97%	41,569 Common Stock
Mar 03 2025	SELL Payment of exercise price or tax liability	$3,717 $8.85 p/Share	420 Reduced 0.98%	42,405 Common Stock
Jan 13 2025	SELL Payment of exercise price or tax liability	$13,367 $15.99 p/Share	836 Reduced 1.91%	42,825 Common Stock
Dec 02 2024	SELL Payment of exercise price or tax liability	$4,419 $12.7 p/Share	348 Reduced 0.79%	43,661 Common Stock
Oct 11 2024	SELL Payment of exercise price or tax liability	$11,101 $16.02 p/Share	693 Reduced 1.55%	44,009 Common Stock
Sep 03 2024	SELL Payment of exercise price or tax liability	$4,701 $13.51 p/Share	348 Reduced 0.77%	44,702 Common Stock
Jul 11 2024	BUY Grant, award, or other acquisition	-	31,039 Added 40.79%	45,050 Common Stock
Jun 03 2024	SELL Payment of exercise price or tax liability	$3,786 $11.17 p/Share	339 Reduced 2.36%	14,011 Common Stock
Mar 01 2024	SELL Payment of exercise price or tax liability	$7,011 $17.66 p/Share	397 Reduced 2.69%	14,350 Common Stock
Dec 06 2023	SELL Open market or private sale	$8,136 $25.27 p/Share	322 Reduced 2.14%	14,747 Common Stock
Sep 01 2023	SELL Payment of exercise price or tax liability	$25,974 $51.64 p/Share	503 Reduced 3.23%	15,069 Common Stock
Sep 01 2023	BUY Grant, award, or other acquisition	-	15,572 Added 50.0%	15,572 Common Stock

Also insider at

UCTT

Ultra Clean Holdings, Inc. Technology

Chief Accounting Officer & SVP

Chris Siu

CFO

Hayward, CA

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