Chris Siu

CIK: 0001389044

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (5.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (10.5%)

Compensation grants

Other (G, F, J, C, D, …)32 (84.2%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

AEHR

AEHR TEST SYSTEMS

Officer

Discretionary Trading P&L

Holdings

Transaction History (38 total)

AEHR
AEHR TEST SYSTEMS
Oct 12, 2026
Tax Payment(F)
Direct
987 shares at avg. $84.64$84K
AEHR
AEHR TEST SYSTEMS
Oct 2, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $107.21$125K
AEHR
AEHR TEST SYSTEMS
Oct 1, 2026
Other(J)
Indirect
1.1K shares at avg. $6.67$7K
AEHR
AEHR TEST SYSTEMS
Oct 1, 2026
Tax Payment(F)
Direct
194 shares at avg. $101.60$20K
AEHR
AEHR TEST SYSTEMS
Sep 1, 2026
Tax Payment(F)
Direct
496 shares at avg. $76.59$38K
AEHR
AEHR TEST SYSTEMS
Jul 13, 2026
Tax Payment(F)
Direct
988 shares at avg. $72.60$72K
AEHR
AEHR TEST SYSTEMS
Jul 2, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $69.96$80K
AEHR
AEHR TEST SYSTEMS
Jul 1, 2026
Tax Payment(F)
Direct
2.2K shares at avg. $84.42$187K
AEHR
AEHR TEST SYSTEMS
Jul 1, 2026
Award(A)
Direct
6.2K shares-
AEHR
AEHR TEST SYSTEMS
Jul 1, 2026
Award(A)
Direct
6.1K shares-
AEHR
AEHR TEST SYSTEMS
Jun 1, 2026
Tax Payment(F)
Direct
350 shares at avg. $93.62$33K
AEHR
AEHR TEST SYSTEMS
May 14, 2026
Sale(S)
Direct
470 shares at avg. $108.00$51K
AEHR
AEHR TEST SYSTEMS
May 14, 2026
Sale(S)
Indirect
1.6K shares at avg. $106.78$171K
AEHR
AEHR TEST SYSTEMS
Apr 11, 2026
Tax Payment(F)
Direct
697 shares at avg. $70.43$49K
AEHR
AEHR TEST SYSTEMS
Apr 2, 2026
Tax Payment(F)
Direct
821 shares at avg. $44.32$36K
AEHR
AEHR TEST SYSTEMS
Apr 1, 2026
Other(J)
Indirect
2.1K shares at avg. $6.67$14K
AEHR
AEHR TEST SYSTEMS
Mar 1, 2026
Tax Payment(F)
Direct
368 shares at avg. $37.43$14K
AEHR
AEHR TEST SYSTEMS
Jan 11, 2026
Tax Payment(F)
Direct
799 shares at avg. $26.32$21K
AEHR
AEHR TEST SYSTEMS
Jan 2, 2026
Tax Payment(F)
Direct
940 shares at avg. $22.16$21K
AEHR
AEHR TEST SYSTEMS
Dec 1, 2025
Tax Payment(F)
Direct
349 shares at avg. $22.53$8K
AEHR
AEHR TEST SYSTEMS
Oct 13, 2025
Tax Payment(F)
Direct
695 shares at avg. $23.49$16K
AEHR
AEHR TEST SYSTEMS
Oct 2, 2025
Tax Payment(F)
Direct
126 shares at avg. $32.25$4K
AEHR
AEHR TEST SYSTEMS
Oct 2, 2025
Tax Payment(F)
Direct
694 shares at avg. $32.25$22K
AEHR
AEHR TEST SYSTEMS
Oct 1, 2025
Other(J)
Indirect
1K shares at avg. $6.67$7K
AEHR
AEHR TEST SYSTEMS
Sep 2, 2025
Tax Payment(F)
Direct
349 shares at avg. $24.88$9K

		Type	Shares	Price		Ownership
Oct 12, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	987	$84.64	$83,540	Direct
Oct 2, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	1,164	$107.21	$124,792	Direct
Oct 1, 2026	AEHR AEHR TEST SYSTEMS	Other(J)	1,089	$6.67	$7,266	Indirect
Oct 1, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	194	$101.60	$19,710	Direct
Sep 1, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	496	$76.59	$37,989	Direct
Jul 13, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	988	$72.60	$71,729	Direct
Jul 2, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	1,139	$69.96	$79,684	Direct
Jul 1, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	2,213	$84.42	$186,833	Direct
Jul 1, 2026	AEHR AEHR TEST SYSTEMS	Award(A)	6,165	-	$0	Direct
Jul 1, 2026	AEHR AEHR TEST SYSTEMS	Award(A)	6,079	-	$0	Direct
Jun 1, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	350	$93.62	$32,767	Direct
May 14, 2026	AEHR AEHR TEST SYSTEMS	Sale(S)	470	$108.00	$50,760	Direct
May 14, 2026	AEHR AEHR TEST SYSTEMS	Sale(S)	1,600	$106.78	$170,848	Indirect
Apr 11, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	697	$70.43	$49,090	Direct
Apr 2, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	821	$44.32	$36,387	Direct
Apr 1, 2026	AEHR AEHR TEST SYSTEMS	Other(J)	2,095	$6.67	$13,979	Indirect
Mar 1, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	368	$37.43	$13,774	Direct
Jan 11, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	799	$26.32	$21,030	Direct
Jan 2, 2026	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	940	$22.16	$20,830	Direct
Dec 1, 2025	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	349	$22.53	$7,863	Direct
Oct 13, 2025	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	695	$23.49	$16,326	Direct
Oct 2, 2025	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	126	$32.25	$4,064	Direct
Oct 2, 2025	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	694	$32.25	$22,382	Direct
Oct 1, 2025	AEHR AEHR TEST SYSTEMS	Other(J)	1,009	$6.67	$6,733	Indirect
Sep 2, 2025	AEHR AEHR TEST SYSTEMS	Tax Payment(F)	349	$24.88	$8,683	Direct

1-25 of 38 transactions

About Siu Chris

Siu Chris (SEC CIK 0001389044) files insider reports with the SEC as CFO of AEHR TEST SYSTEMS (AEHR).

Signal8 holds 30 ownership filings by Siu Chris, all Form 4s, filed between Sep 3, 2024 and Oct 13, 2026. Those filings report 38 transactions, from Sep 3, 2024 to Oct 12, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Siu Chris's filings is in FREMONT, CA.

Recent filings by Siu Chris

Oct 12, 2026: Tax withholding of AEHR shares (Form 4, code F).
Oct 2, 2026: Tax withholding of AEHR shares (Form 4, code F).
Oct 1, 2026: Other transaction of AEHR shares (Form 4, code J).
Oct 1, 2026: Tax withholding of AEHR shares (Form 4, code F).
Sep 1, 2026: Tax withholding of AEHR shares (Form 4, code F).

Other insiders filing for AEHR TEST SYSTEMS (AEHR)

SALAMONE ALBERTO, EVP, PPBI BUSINESS
VIJAYRAO NARSING KRISHNA, Director
SPORCK ALISTAIR N, VP Contactor Business Unit
ROGERS VERNON, Exec VP of Sales & Mktg.
RICHMOND DONALD P. II, CTO
Erickson Gayn, President and CEO

How to read Form 4 transaction codes