Siu Chris

CIK 0001389044

VP Finance/CFO

Filings

Latest Jun 1, 2026

Issuers covered

Showing

33 of 33

Page 1

Track record

1 of 3 open-market trades scored (33% price coverage) - 2 issuers without price data. Returns are signed: a +10% move on a sale shows as -10% (insider was wrong).

Horizon	Trades	Win rate	Avg	Median	Best	Worst
30 days	1	100%	+7.2%	+7.2%	+7.2%	+7.2%
90 days	1	100%	+31.6%	+31.6%	+31.6%	+31.6%
180 days	1	100%	+53.9%	+53.9%	+53.9%	+53.9%
365 days	1	100%	+53.9%	+53.9%	+53.9%	+53.9%

Issuers

Companies where Siu Chris has filed

Ticker	Issuer	Filings	Last filed
AEHR	Aehr Test Systems	30	Jun 1, 2026
UCTT	Ultra Clean Holdings, Inc.	3	Jun 2, 2022

All filings

33 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
Jun 1, 2026	AEHRAehr Test Systems	FTax	350	$93.62	$32,767
May 15, 2026	AEHRAehr Test Systems	SSale	1,600	$106.78	$170,848
Apr 14, 2026	AEHRAehr Test Systems	FTax	697	$70.43	$49,090
Apr 2, 2026	AEHRAehr Test Systems	FTax	821	$44.32	$36,387
Mar 2, 2026	AEHRAehr Test Systems	FTax	368	$37.43	$13,774
Jan 12, 2026	AEHRAehr Test Systems	FTax	799	$26.32	$21,030
Jan 2, 2026	AEHRAehr Test Systems	FTax	940	$22.16	$20,830
Dec 1, 2025	AEHRAehr Test Systems	FTax	349	$22.53	$7,863
Oct 14, 2025	AEHRAehr Test Systems	FTax	695	$23.49	$16,326
Oct 8, 2025	AEHRAehr Test Systems	FTax	126	$32.25	$4,064
Oct 2, 2025	AEHRAehr Test Systems	FTax	694	$32.25	$22,382
Oct 1, 2025	AEHRAehr Test Systems	JOther	1,009	$6.6725	$6,733
Sep 2, 2025	AEHRAehr Test Systems	FTax	349	$24.88	$8,683
Jul 11, 2025	AEHRAehr Test Systems	FTax	1,045	$14.11	$14,745
Jul 3, 2025	AEHRAehr Test Systems	FTax	752	$15.13	$11,378
Jun 2, 2025	AEHRAehr Test Systems	FTax	524	$9.66	$5,062
Apr 11, 2025	AEHRAehr Test Systems	FTax	836	$8.515	$7,119
Apr 2, 2025	AEHRAehr Test Systems	JOther	2,175	$6.6725	$14,513
Mar 3, 2025	AEHRAehr Test Systems	FTax	420	$8.85	$3,717
Jan 14, 2025	AEHRAehr Test Systems	FTax	836	$15.99	$13,368
Dec 2, 2024	AEHRAehr Test Systems	FTax	348	$12.70	$4,420
Oct 15, 2024	AEHRAehr Test Systems	FTax	693	$16.02	$11,102
Oct 3, 2024	AEHRAehr Test Systems	JOther	427	$10.421	$4,450
Sep 3, 2024	AEHRAehr Test Systems	FTax	348	$13.51	$4,701
Jul 15, 2024	AEHRAehr Test Systems	AGrant	31,039	$0.00	$0
Jun 13, 2024	AEHRAehr Test Systems	FTax	339	$11.17	$3,787
Apr 2, 2024	AEHRAehr Test Systems	JOther	1,600	$10.4975	$16,796
Mar 1, 2024	AEHRAehr Test Systems	FTax	397	$17.66	$7,011
Dec 7, 2023	AEHRAehr Test Systems	SSale	322	$25.266	$8,136
Sep 5, 2023	AEHRAehr Test Systems	FTax	503	$51.64	$25,975
Jun 2, 2022	UCTTUltra Clean Holdings, Inc.	FTax	3,986	$33.56	$133,770
May 3, 2022	UCTTUltra Clean Holdings, Inc.	FTax	502	$31.17	$15,647
Apr 26, 2022	UCTTUltra Clean Holdings, Inc.	FTax	1,698	$33.56	$56,985

Showing 1-33 of 33

Page 1 of 1

Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value