Haiping Dun SEC EDGAR Filings (CIK 0001721581)

SEC EDGAR filings, ownership reports, and insider transactions for Haiping Dun.

Business address
C/O Acm Research, Inc., 42307 Osgood Road, Suite I, Fremont, CA, 94539
Top holdings (ownership)
ACMR
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Haiping Dun has filed 60 SEC EDGAR filings since 02 Nov 2017

Latest Filings

Recent SEC filings for Haiping Dun including 4, 144, 4/A and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 FORM 4 14 Nov 2025 12 Nov 2025 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 14 Aug 2025 12 Aug 2025 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 18 Mar 2025 14 Mar 2025 001-38273
144 Open 144 document View SEC filing for 144 14 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 12 Mar 2025 10 Mar 2025 001-38273
144 Open 144 document View SEC filing for 144 10 Mar 2025
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2025 03 Mar 2025 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 03 Dec 2024 29 Nov 2024 001-38273
144 Open 144 document View SEC filing for 144 29 Nov 2024
4 Open 4 document View SEC filing for 4 FORM 4 26 Nov 2024 22 Nov 2024 001-38273
144 Open 144 document View SEC filing for 144 22 Nov 2024
4 Open 4 document View SEC filing for 4 FORM 4 18 Nov 2024 14 Nov 2024 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 03 Sep 2024 29 Aug 2024 001-38273
144 Open 144 document View SEC filing for 144 29 Aug 2024
4 Open 4 document View SEC filing for 4 FORM 4 26 Aug 2024 22 Aug 2024 001-38273
144 Open 144 document View SEC filing for 144 22 Aug 2024
4 Open 4 document View SEC filing for 4 FORM 4 20 Aug 2024 12 Aug 2024 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 16 Aug 2024 14 Aug 2024 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 01 Jul 2024 27 Jun 2024 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 31 May 2024 29 May 2024 001-38273
144 Open 144 document View SEC filing for 144 29 May 2024
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2024 22 May 2024 001-38273
144 Open 144 document View SEC filing for 144 22 May 2024
4 Open 4 document View SEC filing for 4 FORM 4 16 May 2024 14 May 2024 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 15 Mar 2024 14 Mar 2024 001-38273
144 Open 144 document View SEC filing for 144 14 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 12 Mar 2024 08 Mar 2024 001-38273
144 Open 144 document View SEC filing for 144 08 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2024 01 Mar 2024 001-38273
4 Open 4 document View SEC filing for 4 01 Dec 2023 29 Nov 2023 001-38273
144 Open 144 document View SEC filing for 144 29 Nov 2023
4 Open 4 document View SEC filing for 4 27 Nov 2023 22 Nov 2023 001-38273
144 Open 144 document View SEC filing for 144 22 Nov 2023
4 Open 4 document View SEC filing for 4 16 Nov 2023 14 Nov 2023 001-38273
4 Open 4 document View SEC filing for 4 24 Aug 2023 22 Aug 2023 001-38273
144 Open 144 document View SEC filing for 144 22 Aug 2023
4/A Open 4/A document View SEC filing for 4/A 21 Aug 2023 10 Aug 2023 001-38273
4 Open 4 document View SEC filing for 4 14 Aug 2023 10 Aug 2023 001-38273
4 Open 4 document View SEC filing for 4 05 Jun 2023 01 Jun 2023 001-38273
144 Open 144 document View SEC filing for 144 01 Jun 2023
4 Open 4 document View SEC filing for 4 24 May 2023 22 May 2023 001-38273
4 Open 4 document View SEC filing for 4 20 Mar 2023 16 Mar 2023 001-38273
4 Open 4 document View SEC filing for 4 13 Mar 2023 09 Mar 2023 001-38273
4 Open 4 document View SEC filing for 4 02 Dec 2022 30 Nov 2022 001-38273
4 Open 4 document View SEC filing for 4 25 Nov 2022 22 Nov 2022 001-38273
4 Open 4 document View SEC filing for 4 15 Nov 2022 14 Nov 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 24 Aug 2022 22 Aug 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 17 Aug 2022 15 Aug 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 10 Aug 2022 08 Aug 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 05 Jul 2022 30 Jun 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 31 May 2022 27 May 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 20 May 2022 18 May 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 11 Mar 2022 09 Mar 2022 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2022 02 Mar 2022 001-38273
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 05 Mar 2021 22 Feb 2021 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2021 22 Feb 2021 001-38273
4 Open 4 document View SEC filing for 4 FORM 4 24 Mar 2020 20 Mar 2020 001-38273
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Aug 2019 23 Aug 2019 001-38273
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 Apr 2019 23 Apr 2019 001-38273
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 02 Nov 2017 02 Nov 2017 001-38273

About this filer

Haiping Dun files with the SEC under CIK 0001721581. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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