Filer Snapshot

Mark C. Winmill SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001019264.

Entity Type

Individual

Total Filings

75

Latest Filing

25 Mar 2026

Industry

n/a

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Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 25 Mar 2026 for CIK 0001019264.

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Business address
3814 Route 44, Millbrook, NY, 12545
Top holdings (ownership)
SELF
Top holdings (Schedule 13D)
SELF

Quick Takeaways

  • Mark C. Winmill is an SEC filer tracked under CIK 0001019264.
  • 75 filings are listed on this profile.
  • Common form coverage includes 4, SCHEDULE 13D/A, SC 13D/A and more.

What Changed

  • Latest filing: 4 filed on 25 Mar 2026.
  • Report period: 24 Mar 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 25 Mar 2026 for CIK 0001019264.

View Source Filing

Return Loop

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A newly filed 4 can change the filing history, ownership context, or next research path for Mark C. Winmill.

Latest source-backed update
4 filed 25 Mar 2026
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Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 25 Mar 2026.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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Latest update

What changed recently for Mark C. Winmill

Ownership report updated

Latest ownership report period: 24 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

25 Mar 2026

Page type

Ownership filings

Latest period

24 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 25 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

Mark C. Winmill has filed 75 SEC EDGAR filings since 18 Feb 1997. Common forms include 4, SCHEDULE 13D/A, SC 13D/A, SC 13D and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Mark C. Winmill 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 25 Mar 2026 24 Mar 2026 001-12681
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 05 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Dec 2025 03 Dec 2025 001-12681
SCHEDULE 13D/A Open SCHEDULE 13D/A document | Open XBRL data View SEC filing for SCHEDULE 13D/A 21 May 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2025 19 May 2025 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Mar 2025 25 Mar 2025 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 May 2024 28 May 2024 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Mar 2024 25 Mar 2024 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Nov 2023 16 Nov 2023 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Aug 2023 17 Aug 2023 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 May 2023 15 May 2023 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Mar 2023 27 Mar 2023 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Nov 2022 18 Nov 2022 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Aug 2022 23 Aug 2022 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 May 2022 20 May 2022 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Mar 2022 28 Mar 2022 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 Aug 2021 24 Aug 2021 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Aug 2021 20 Aug 2021 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Mar 2021 25 Mar 2021 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Nov 2020 19 Nov 2020 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Aug 2020 19 Aug 2020 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Aug 2020 31 Jul 2020 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 May 2020 20 May 2020 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Mar 2020 26 Mar 2020 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Dec 2019 13 Dec 2019 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 May 2019 28 May 2019 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Mar 2019 27 Mar 2019 001-12681
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 01 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 May 2018 18 May 2018 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Apr 2018 29 Mar 2018 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Aug 2017 23 Aug 2017 001-12681
SC 13D Open SC 13D document View SEC filing for SC 13D 17 Mar 2017
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Dec 2016 30 Nov 2016 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Aug 2016 23 Aug 2016 811-08025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 May 2016 26 May 2016 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 May 2016 25 May 2016 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 May 2016 23 May 2016 001-12681
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Mar 2012 26 Mar 2012 811-08025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Mar 2012 15 Mar 2012 811-08025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Mar 2012 09 Mar 2012 811-08025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Mar 2012 07 Mar 2012 811-08025
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 08 Mar 2012 09 Aug 2011 811-09261

About this filer

Mark C. Winmill files with the SEC under CIK 0001019264. 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.
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