David Mason SEC EDGAR Filings (CIK 0001744907)

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

Business address
800 Boylston Street, Suite 2475, Boston, MA, 02199
Top holdings (ownership)
SEMR and EVER
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David Mason has filed 68 SEC EDGAR filings since 27 Jun 2018

Latest Filings

Recent SEC filings for David Mason including 4, 144, 3 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 17 Dec 2025 15 Dec 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 02 Dec 2025 01 Dec 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 03 Nov 2025 01 Nov 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 02 Sep 2025 01 Sep 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2025 01 Aug 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 04 Jun 2025 03 Jun 2025 001-40276
144 Open 144 document View SEC filing for 144 03 Jun 2025
4 Open 4 document View SEC filing for 4 FORM 4 02 Jun 2025 01 Jun 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 02 May 2025 01 May 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2025 01 Mar 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 04 Feb 2025 03 Feb 2025 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 05 Nov 2024 04 Nov 2024 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2024 02 Aug 2024 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 03 May 2024 02 May 2024 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2024 01 Mar 2024 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 06 Feb 2024 02 Feb 2024 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2023 02 Nov 2023 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 03 Nov 2022 01 Nov 2022 001-40276
3 Open 3 document View SEC filing for 3 FORM 3 19 Oct 2022 17 Oct 2022 001-40276
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Oct 2022 03 Oct 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Aug 2022 17 Aug 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Aug 2022 08 Aug 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Aug 2022 02 Aug 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Jul 2022 30 Jun 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Jun 2022 28 Jun 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 May 2022 05 May 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Apr 2022 01 Apr 2022 001-38549
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 15 Feb 2022 11 Feb 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 14 Feb 2022 11 Feb 2022 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 29 Dec 2021 28 Dec 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Aug 2021 04 Aug 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Jun 2021 07 Jun 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 07 May 2021 05 May 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Apr 2021 31 Mar 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Mar 2021 15 Mar 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Mar 2021 08 Mar 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Mar 2021 25 Feb 2021 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Nov 2020 06 Nov 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Nov 2020 02 Nov 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 07 Oct 2020 05 Oct 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Sep 2020 04 Sep 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jul 2020 01 Jul 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 May 2020 04 May 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Apr 2020 06 Apr 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Mar 2020 27 Feb 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 24 Feb 2020 20 Feb 2020 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 Nov 2019 08 Nov 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Aug 2019 08 Aug 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 May 2019 02 May 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 May 2019 29 Apr 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Apr 2019 15 Apr 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Apr 2019 01 Apr 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Apr 2019 29 Mar 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 07 Mar 2019 05 Mar 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Feb 2019 26 Feb 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Feb 2019 15 Feb 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Feb 2019 04 Feb 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Jan 2019 14 Jan 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Jan 2019 07 Jan 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 07 Jan 2019 04 Jan 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 Jan 2019 02 Jan 2019 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jan 2019 31 Dec 2018 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Dec 2018 21 Dec 2018 001-38549
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 21 Aug 2018 28 Jun 2018 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Aug 2018 01 Aug 2018 001-38549
3/A Open 3/A document View SEC filing for 3/A FORM 3/A SUBMISSION 05 Jul 2018 27 Jun 2018 001-38549
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jul 2018 28 Jun 2018 001-38549
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 27 Jun 2018 27 Jun 2018 001-38549

About this filer

David Mason files with the SEC under CIK 0001744907. 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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