David Platt SEC EDGAR Filings (CIK 0001166440)

SEC EDGAR filings, ownership reports, and insider transactions for David Platt.

Business address
12 Appleton Circle, Newton, MA, 02459
Top holdings (ownership)
BIXT
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David Platt has filed 77 SEC EDGAR filings since 04 Feb 2002

Latest Filings

Recent SEC filings for David Platt including 4/A, 4, 5 and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 18 Nov 2025 24 Oct 2024 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Oct 2024 25 Oct 2024 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Aug 2024 15 Aug 2024 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Mar 2024 27 Mar 2024 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 16 Jan 2024 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Sep 2023 14 Sep 2023 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Aug 2023 21 Aug 2023 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2023 17 May 2023 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 May 2023 14 Apr 2023 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Feb 2023 21 Nov 2022 001-35027
5 Open 5 document View SEC filing for 5 PRIMARY DOCUMENT 08 Feb 2023 31 Dec 2022 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Aug 2022 16 Aug 2022 001-35027
4 Open 4 document View SEC filing for 4 13 May 2022 11 May 2022 001-35027
5 Open 5 document View SEC filing for 5 28 Jan 2022 31 Dec 2021 001-35027
4 Open 4 document View SEC filing for 4 18 Jan 2022 19 Nov 2021 001-35027
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 07 Jun 2021 04 Jun 2021 001-35027
4 Open 4 document View SEC filing for 4 FORM 4 19 Jan 2021 15 Jan 2021 001-35027
5 Open 5 document View SEC filing for 5 04 Jan 2021 31 Dec 2020 001-35027
5 Open 5 document View SEC filing for 5 SF0004_DAVID PLATT_FORM5 15 Jun 2020 31 Dec 2019 001-35027
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 07 Jan 2020 07 Jan 2020 001-35027
SC 13D Open SC 13D document View SEC filing for SC 13D SCHEDULE 13D 30 May 2019
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 27 Sep 2018 21 Sep 2018 001-35027
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 May 2015 14 May 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Mar 2015 09 Mar 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Feb 2015 17 Feb 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Feb 2015 12 Feb 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Feb 2015 02 Feb 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Jan 2015 27 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Jan 2015 23 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Jan 2015 20 Jan 2015 000-54586
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 20 Jan 2015 15 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2015 15 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jan 2015 09 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Jan 2015 07 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jan 2015 05 Jan 2015 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2015 31 Dec 2014 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 31 Dec 2014 30 Dec 2014 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Apr 2014 12 Feb 2014 000-54586
5 Open 5 document View SEC filing for 5 PRIMARY DOCUMENT 13 Feb 2013 31 Dec 2012 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2012 08 Jun 2012 000-54586
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Mar 2012 20 Mar 2012 000-54586
3 Open 3 document View SEC filing for 3 FORM 3 25 Jan 2012 25 Jan 2012 000-54586

About this filer

David Platt files with the SEC under CIK 0001166440. 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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