Filer Snapshot

Martin D. Madaus SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001310268.

Entity Type

Individual

Total Filings

112

Latest Filing

09 Apr 2026

Industry

n/a

Save this filer page for the next filing cycle

Keep this page in your research queue, then return to compare new filings with prior context.

Save and revisit

Save this filer page

Create a free account to keep this page in your watchlists and return after a new SEC filing changes the record here.

Create free account to save and revisit this page

Best next steps

Start with the latest filings table, then open the strongest context page for this filer.

  • Use the filings table to verify the newest submission, form type, and report period.
  • Open the deeper context page only when this filer actually has insider or ownership signal.
Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 09 Apr 2026 for CIK 0001310268.

View Source Filing
Business address
250 Campus Drive, Marlborough, MA, 01752
Top holdings (ownership)
QTRX, RGEN, LAB, and AZTA

Quick Takeaways

  • Martin D. Madaus is an SEC filer tracked under CIK 0001310268.
  • 112 filings are listed on this profile.
  • Common form coverage includes 4, 4/A, 3 and more.

What Changed

  • Latest filing: 4 filed on 09 Apr 2026.
  • Report period: 07 Apr 2026.

Why This Matters

  • You can quote filing dates and form types directly from the SEC record on this page.
  • Use this profile before deeper ownership or insider analysis to confirm filing history context.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 09 Apr 2026 for CIK 0001310268.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for Martin D. Madaus.

Latest source-backed update
4 filed 09 Apr 2026
Why come back
Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 09 Apr 2026.
  • Save this filer if you want a stable place to return after the next filing cycle.
  • Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for Martin D. Madaus

Ownership report updated

Latest ownership report period: 07 Apr 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

09 Apr 2026

Page type

Ownership filings

Latest period

07 Apr 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 09 Apr 2026.

Open ownership filings Browse recent public updates

Filer Overview

Martin D. Madaus has filed 112 SEC EDGAR filings since 03 Jan 2005. Common forms include 4, 4/A, 3, 3/A.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Martin D. Madaus with direct links to document and filing folders.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Apr 2026 07 Apr 2026 001-36214
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Mar 2026 26 Feb 2026 001-36214
4 Open 4 document View SEC filing for 4 4 06 Feb 2026 05 Feb 2026 000-25434
4/A Open 4/A document View SEC filing for 4/A 4/A 25 Nov 2025 07 Feb 2025 000-25434
4 Open 4 document View SEC filing for 4 4 12 Aug 2025 08 Aug 2025 000-14656
4 Open 4 document View SEC filing for 4 4 19 May 2025 15 May 2025 000-14656
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 May 2025 07 May 2025 001-36214
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Feb 2025 26 Feb 2025 001-36214
4 Open 4 document View SEC filing for 4 4 11 Feb 2025 07 Feb 2025 000-25434
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jan 2025 02 Jan 2025 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Dec 2024 09 Dec 2024 001-36214
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 11 Dec 2024 06 Dec 2024 001-36214
4 Open 4 document View SEC filing for 4 4 19 Nov 2024 19 Nov 2024 000-25434
4 Open 4 document View SEC filing for 4 4 14 Jun 2024 14 Jun 2024 000-14656
4 Open 4 document View SEC filing for 4 4 20 May 2024 16 May 2024 000-14656
4 Open 4 document View SEC filing for 4 4 13 Feb 2024 12 Feb 2024 000-25434
3 Open 3 document View SEC filing for 3 3 02 Feb 2024 30 Jan 2024 000-25434
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2024 02 Jan 2024 001-38319
4 Open 4 document View SEC filing for 4 4 20 Oct 2023 20 Oct 2023 001-34180
4 Open 4 document View SEC filing for 4 FORM 4 16 Jun 2023 14 Jun 2023 001-34180
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 22 May 2023 18 May 2023 000-14656
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 May 2023 24 Mar 2023 000-14656
3/A Open 3/A document View SEC filing for 3/A FORM 3/A SUBMISSION 05 May 2023 06 Feb 2023 000-14656
4 Open 4 document View SEC filing for 4 FORM 4 22 Feb 2023 20 Feb 2023 001-34180
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 Feb 2023 06 Feb 2023 000-14656
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 08 Feb 2023 06 Feb 2023 000-14656
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2023 03 Jan 2023 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Aug 2022 10 Aug 2022 001-38319
4 Open 4 document View SEC filing for 4 FORM 4 17 Jun 2022 15 Jun 2022 001-34180
4 Open 4 document View SEC filing for 4 FORM 4 06 Apr 2022 04 Apr 2022 001-34180
3 Open 3 document View SEC filing for 3 FORM 3 06 Apr 2022 04 Apr 2022 001-34180
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2022 03 Jan 2022 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Oct 2021 01 Oct 2021 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jul 2021 01 Jul 2021 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Apr 2021 04 Jan 2021 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2021 04 Jan 2021 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Nov 2020 04 Nov 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Oct 2020 19 Oct 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Oct 2020 06 Oct 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Oct 2020 01 Oct 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Sep 2020 28 Sep 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Sep 2020 16 Sep 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2020 01 Sep 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Aug 2020 18 Aug 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Aug 2020 05 Aug 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Jul 2020 20 Jul 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jul 2020 08 Jul 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jul 2020 01 Jul 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Jun 2020 24 Jun 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Jun 2020 08 Jun 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 May 2020 27 May 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 May 2020 12 May 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Apr 2020 27 Apr 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Apr 2020 14 Apr 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Apr 2020 06 Apr 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Apr 2020 01 Apr 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Mar 2020 04 Mar 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Feb 2020 20 Feb 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Feb 2020 04 Feb 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Jan 2020 22 Jan 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jan 2020 08 Jan 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jan 2020 02 Jan 2020 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Dec 2019 26 Dec 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Dec 2019 10 Dec 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Nov 2019 25 Nov 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Nov 2019 12 Nov 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Oct 2019 01 Oct 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jul 2019 01 Jul 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Apr 2019 01 Apr 2019 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2019 02 Jan 2019 001-38319
4 Open 4 document View SEC filing for 4 4 09 Aug 2018 07 Aug 2018 001-38319
3 Open 3 document View SEC filing for 3 3 06 Dec 2017 06 Dec 2017 001-38319
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Nov 2014 18 Nov 2014 001-13595
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Nov 2014 06 Nov 2014 001-13595
4 Open 4 document View SEC filing for 4 24 Feb 2014 20 Feb 2014 001-33259
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Nov 2013 07 Nov 2013 001-13595
4 Open 4 document View SEC filing for 4 07 Nov 2013 05 Nov 2013 001-33259
4 Open 4 document View SEC filing for 4 16 Aug 2013 15 Aug 2013 001-33259
4 Open 4 document View SEC filing for 4 19 Jul 2013 17 Jul 2013 001-33259
4 Open 4 document View SEC filing for 4 07 May 2013 03 May 2013 001-33259
4 Open 4 document View SEC filing for 4 22 Mar 2013 20 Mar 2013 001-33259
4 Open 4 document View SEC filing for 4 28 Dec 2012 27 Dec 2012 001-33259
4 Open 4 document View SEC filing for 4 07 Nov 2012 05 Nov 2012 001-33259
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2012 31 Oct 2012 001-13595
4 Open 4 document View SEC filing for 4 20 Aug 2012 16 Aug 2012 001-33259
4 Open 4 document View SEC filing for 4 09 May 2012 07 May 2012 001-33259
4 Open 4 document View SEC filing for 4 14 Mar 2012 13 Mar 2012 001-33259
3 Open 3 document View SEC filing for 3 08 Dec 2011 01 Dec 2011 001-33259
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Nov 2011 02 Nov 2011 001-13595
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Aug 2011 09 Aug 2011 001-13595
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Nov 2010 03 Nov 2010 001-13595
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 16 Jul 2010 14 Jul 2010 001-09781
4/A Open 4/A document View SEC filing for 4/A STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 19 Feb 2010 15 Feb 2010 001-09781
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 17 Feb 2010 15 Feb 2010 001-09781
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 12 Feb 2010 10 Feb 2010 001-09781

About this filer

Martin D. Madaus files with the SEC under CIK 0001310268. This page aggregates EDGAR filings and related ownership activity.

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.