Siu Chris

Business address
C/O Aehr Test Systems, 400 Kato Terrace, Fremont, CA, 94539
Top holdings (ownership)
AEHR and UCTT
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Siu Chris has filed 45 SEC EDGAR filings since 07 Feb 2007

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing PRIMARY DOCUMENT 01 Dec 2025 01 Dec 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 14 Oct 2025 13 Oct 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 08 Oct 2025 02 Oct 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Oct 2025 02 Oct 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 01 Oct 2025 01 Oct 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Sep 2025 02 Sep 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 11 Jul 2025 11 Jul 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 03 Jul 2025 02 Jul 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Jun 2025 02 Jun 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 11 Apr 2025 11 Apr 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Apr 2025 01 Apr 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 03 Mar 2025 03 Mar 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 14 Jan 2025 13 Jan 2025 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Dec 2024 02 Dec 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 15 Oct 2024 11 Oct 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 03 Oct 2024 01 Oct 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 03 Sep 2024 03 Sep 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 15 Jul 2024 11 Jul 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 13 Jun 2024 03 Jun 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 02 Apr 2024 01 Apr 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 01 Mar 2024 01 Mar 2024 000-22893
4 Open Document Open Filing PRIMARY DOCUMENT 07 Dec 2023 06 Dec 2023 000-22893
144 Open Document Open Filing 06 Dec 2023
4 Open Document Open Filing PRIMARY DOCUMENT 05 Sep 2023 01 Sep 2023 000-22893
3/A Open Document Open Filing PRIMARY DOCUMENT 13 Jul 2023 01 Jun 2023 000-22893
3 Open Document Open Filing PRIMARY DOCUMENT 07 Jun 2023 01 Jun 2023 000-22893
4 Open Document Open Filing 02 Jun 2022 31 May 2022 000-50646
4 Open Document Open Filing FORM 4 03 May 2022 29 Apr 2022 000-50646
4 Open Document Open Filing FORM 4 26 Apr 2022 24 Apr 2022 000-50646
4 Open Document Open Filing FORM 4 02 Jun 2021 31 May 2021 000-50646
4 Open Document Open Filing FORM 4 04 May 2021 30 Apr 2021 000-50646
4 Open Document Open Filing FORM 4 27 Apr 2021 24 Apr 2021 000-50646
4 Open Document Open Filing FORM 4 12 Feb 2021 10 Feb 2021 000-50646
4 Open Document Open Filing FORM 4 05 Aug 2020 03 Aug 2020 000-50646
4 Open Document Open Filing FORM 4 01 Jun 2020 31 May 2020 000-50646
4 Open Document Open Filing FORM 4 28 Apr 2020 24 Apr 2020 000-50646
4 Open Document Open Filing FORM 4 06 Jun 2019 31 May 2019 000-50646
3 Open Document Open Filing FORM 3 05 Jun 2019 30 May 2019 000-50646