John Mark O'Mahony SEC EDGAR Filings (CIK 0001808556)

SEC EDGAR filings, ownership reports, and insider transactions for John Mark O'Mahony.

Business address
C/O Leap Therapeutics, Inc., 47 Thorndike Street, Suite B1 1, Cambridge, MA, 02141
Top holdings (ownership)
LPTX
Get insider transactions for this reporting owner
John Mark O'Mahony has filed 14 SEC EDGAR filings since 06 Apr 2020

Latest Filings

Recent SEC filings for John Mark O'Mahony including 4, 3.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 01 Jul 2025 30 Jun 2025 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 01 Apr 2025 28 Mar 2025 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Oct 2024 02 Oct 2024 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 31 Jan 2024 29 Jan 2024 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 30 Jan 2024 26 Jan 2024 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 25 Aug 2023 23 Aug 2023 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Apr 2023 31 Mar 2023 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 02 Sep 2022 01 Sep 2022 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 02 Feb 2022 31 Jan 2022 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 28 May 2021 26 May 2021 001-37990
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 28 Jan 2021 26 Jan 2021 001-37990
4 Open 4 document View SEC filing for 4 4 12 Aug 2020 10 Aug 2020 001-37990
4 Open 4 document View SEC filing for 4 4 13 Apr 2020 09 Apr 2020 001-37990
3 Open 3 document View SEC filing for 3 3 06 Apr 2020 01 Apr 2020 001-37990

About this filer

John Mark O'Mahony files with the SEC under CIK 0001808556. 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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