Mark Jeffrey DeLong SEC EDGAR Filings (CIK 0001856078)

SEC EDGAR filings, ownership reports, and insider transactions for Mark Jeffrey DeLong.

Business address
100 5 Th Avenue, 3 Rd Floor, Waltham, MA, 02451
Top holdings (ownership)
APLS
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Mark Jeffrey DeLong has filed 53 SEC EDGAR filings since 09 Apr 2021

Latest Filings

Recent SEC filings for Mark Jeffrey DeLong including 144, 4, 4/A and more.

Form type Document Filing Description Filing date Reporting date File number(s)
144 Open 144 document View SEC filing for 144 22 Jan 2026
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Jan 2026 20 Jan 2026 001-38276
144 Open 144 document View SEC filing for 144 20 Jan 2026
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Jan 2026 13 Jan 2026 001-38276
144 Open 144 document View SEC filing for 144 13 Jan 2026
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Jun 2025 09 Jun 2025 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Feb 2025 11 Feb 2025 001-38276
144 Open 144 document View SEC filing for 144 11 Feb 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Jan 2025 29 Jan 2025 001-38276
144 Open 144 document View SEC filing for 144 29 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Jan 2025 22 Jan 2025 001-38276
144 Open 144 document View SEC filing for 144 22 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Jan 2025 17 Jan 2025 001-38276
144 Open 144 document View SEC filing for 144 17 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Jan 2025 13 Jan 2025 001-38276
144 Open 144 document View SEC filing for 144 13 Jan 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Aug 2024 12 Aug 2024 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Mar 2024 18 Mar 2024 001-38276
144 Open 144 document View SEC filing for 144 18 Mar 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Feb 2024 12 Feb 2024 001-38276
144 Open 144 document View SEC filing for 144 12 Feb 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 31 Jan 2024 29 Jan 2024 001-38276
144 Open 144 document View SEC filing for 144 29 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Jan 2024 22 Jan 2024 001-38276
144 Open 144 document View SEC filing for 144 22 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jan 2024 16 Jan 2024 001-38276
144 Open 144 document View SEC filing for 144 16 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Oct 2023 23 Oct 2023 001-38276
144 Open 144 document View SEC filing for 144 23 Oct 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 22 Feb 2023 21 Feb 2023 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Feb 2023 10 Feb 2023 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Jan 2023 27 Jan 2023 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Jan 2023 20 Jan 2023 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jan 2023 12 Jan 2023 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Oct 2022 20 Oct 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Aug 2022 17 Aug 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Aug 2022 11 Aug 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Aug 2022 08 Aug 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Aug 2022 04 Aug 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Jul 2022 27 Jul 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Jul 2022 19 Jul 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Jun 2022 16 Jun 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Apr 2022 20 Apr 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Feb 2022 10 Feb 2022 001-38276
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 07 Feb 2022 21 Jan 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Feb 2022 28 Jan 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 Jan 2022 21 Jan 2022 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Oct 2021 20 Oct 2021 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Jul 2021 21 Jul 2021 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jul 2021 15 Jul 2021 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jun 2021 15 Jun 2021 001-38276
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2021 18 May 2021 001-38276
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 09 Apr 2021 30 Mar 2021 001-38276

About this filer

Mark Jeffrey DeLong files with the SEC under CIK 0001856078. 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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