John Joseph Johnston SEC EDGAR Filings (CIK 0001874850)

SEC EDGAR filings, ownership reports, and insider transactions for John Joseph Johnston.

Business address
C/O Maxcyte, Inc., 22 Firstfield Road, Suite 110, Gaithersburg, MD, 20878
Top holdings (ownership)
MXCT
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John Joseph Johnston has filed 29 SEC EDGAR filings since 29 Jul 2021

Latest Filings

Recent SEC filings for John Joseph Johnston including 4, 144, 3.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 23 Jun 2025 18 Jun 2025 001-40674
4 Open 4 document View SEC filing for 4 29 Jan 2025 27 Jan 2025 001-40674
4 Open 4 document View SEC filing for 4 30 Dec 2024 26 Dec 2024 001-40674
144 Open 144 document View SEC filing for 144 26 Dec 2024
4 Open 4 document View SEC filing for 4 10 Dec 2024 06 Dec 2024 001-40674
4 Open 4 document View SEC filing for 4 30 Oct 2024 28 Oct 2024 001-40674
4 Open 4 document View SEC filing for 4 30 Sep 2024 26 Sep 2024 001-40674
144 Open 144 document View SEC filing for 144 26 Sep 2024
4 Open 4 document View SEC filing for 4 28 Aug 2024 26 Aug 2024 001-40674
4 Open 4 document View SEC filing for 4 30 Jul 2024 26 Jul 2024 001-40674
4 Open 4 document View SEC filing for 4 01 Jul 2024 27 Jun 2024 001-40674
144 Open 144 document View SEC filing for 144 27 Jun 2024
4 Open 4 document View SEC filing for 4 13 Jun 2024 11 Jun 2024 001-40674
4 Open 4 document View SEC filing for 4 28 Mar 2024 26 Mar 2024 001-40674
4 Open 4 document View SEC filing for 4 28 Feb 2024 26 Feb 2024 001-40674
144 Open 144 document View SEC filing for 144 26 Feb 2024
4 Open 4 document View SEC filing for 4 30 Jan 2024 26 Jan 2024 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Dec 2023 26 Dec 2023 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 29 Nov 2023 27 Nov 2023 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Nov 2023 14 Nov 2023 001-40674
144 Open 144 document View SEC filing for 144 14 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Aug 2023 28 Aug 2023 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Jul 2023 26 Jul 2023 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Jun 2023 26 Jun 2023 001-40674
144 Open 144 document View SEC filing for 144 26 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jun 2023 22 Jun 2023 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 Jul 2022 29 Jun 2022 001-40674
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Aug 2021 09 Aug 2021 001-40674
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Jul 2021 29 Jul 2021 001-40674

About this filer

John Joseph Johnston files with the SEC under CIK 0001874850. 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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