Filer Snapshot

Richard J. Nigon SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001213869.

Entity Type

Individual

Total Filings

129

Latest Filing

13 Apr 2026

Industry

n/a

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Source: SEC Forms 3/4/5

4 filed on 13 Apr 2026 for CIK 0001213869.

View Source Filing
Business address
C/O Northern Technologies Int'l Corp., 4201 Woodland Road, Po Box 69, Circle Pines, MN, 55014
Top holdings (ownership)
CELC, TCMD, and NTIC

Quick Takeaways

  • Richard J. Nigon is an SEC filer tracked under CIK 0001213869.
  • 129 filings are listed on this profile.
  • Common form coverage includes 4, 144, 3 and more.

What Changed

  • Latest filing: 4 filed on 13 Apr 2026.
  • Report period: 09 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 13 Apr 2026 for CIK 0001213869.

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 Richard J. Nigon.

Latest source-backed update
4 filed 13 Apr 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 13 Apr 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 Richard J. Nigon

Ownership report updated

Latest ownership report period: 09 Apr 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

13 Apr 2026

Page type

Ownership filings

Latest period

09 Apr 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 13 Apr 2026.

Open ownership filings Browse recent public updates

Filer Overview

Richard J. Nigon has filed 129 SEC EDGAR filings since 11 Feb 2003. Common forms include 4, 144, 3, 4/A and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Richard J. Nigon 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 13 Apr 2026 09 Apr 2026 001-38207
4 Open 4 document View SEC filing for 4 09 Jan 2026 15 Dec 2025 001-38207
4 Open 4 document View SEC filing for 4 15 Sep 2025 11 Sep 2025 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2025 01 Sep 2025 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Jul 2025 24 Jul 2025 001-11038
4 Open 4 document View SEC filing for 4 21 May 2025 19 May 2025 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Sep 2024 01 Sep 2024 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2024 01 Aug 2024 001-11038
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 12 Jun 2024 10 Jun 2024 001-38207
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 06 Jun 2024 04 Jun 2024 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Sep 2023 01 Sep 2023 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Jul 2023 26 Jul 2023 001-11038
144 Open 144 document View SEC filing for 144 27 Jul 2023
4 Open 4 document View SEC filing for 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 17 May 2023 15 May 2023 001-38207
4 Open 4 document View SEC filing for 4 FORM 4 13 Sep 2022 09 Sep 2022 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Sep 2022 01 Sep 2022 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 26 May 2022 25 May 2022 001-38207
4 Open 4 document View SEC filing for 4 FORM 4 19 May 2022 17 May 2022 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2021 01 Sep 2021 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 19 May 2021 17 May 2021 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 May 2021 12 May 2021 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2020 01 Sep 2020 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 May 2020 14 May 2020 001-38207
4 Open 4 document View SEC filing for 4 FORM 4 06 May 2020 04 May 2020 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 Jan 2020 31 Dec 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2019 30 Sep 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 11 Sep 2019 09 Sep 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 06 Sep 2019 04 Sep 2019 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Sep 2019 01 Sep 2019 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 02 Jul 2019 28 Jun 2019 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2019 16 May 2019 001-38207
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 13 May 2019 09 May 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 02 Apr 2019 29 Mar 2019 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 Jan 2019 31 Dec 2018 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2018 28 Sep 2018 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Sep 2018 11 Sep 2018 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 01 Sep 2018 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 02 Jul 2018 29 Jun 2018 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jun 2018 31 May 2018 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 May 2018 14 May 2018 001-38207
4 Open 4 document View SEC filing for 4 NIGON FORM 4 14 May 2018 10 May 2018 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 Apr 2018 30 Mar 2018 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 Jan 2018 29 Dec 2017 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Nov 2017 28 Nov 2017 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Nov 2017 20 Nov 2017 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Oct 2017 19 Oct 2017 001-38207
4 Open 4 document View SEC filing for 4 FORM 4 03 Oct 2017 29 Sep 2017 001-37799
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 19 Sep 2017 19 Sep 2017 001-38207
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Sep 2017 07 Sep 2017 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2017 01 Sep 2017 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 05 Jul 2017 30 Jun 2017 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 11 May 2017 09 May 2017 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 May 2017 27 Apr 2017 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 04 Apr 2017 31 Mar 2017 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 15 Mar 2017 13 Mar 2017 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 22 Feb 2017 17 Feb 2017 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 25 Jan 2017 23 Jan 2017 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2017 30 Dec 2016 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 15 Dec 2016 13 Dec 2016 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 15 Dec 2016 13 Dec 2016 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 Oct 2016 30 Sep 2016 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 15 Sep 2016 13 Sep 2016 001-37799
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Sep 2016 01 Sep 2016 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 04 Aug 2016 02 Aug 2016 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 29 Jul 2016 27 Jul 2016 001-37799
3 Open 3 document View SEC filing for 3 FORM 3 27 Jul 2016 27 Jul 2016 001-37799
4 Open 4 document View SEC filing for 4 FORM 4 03 May 2016 29 Apr 2016 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 12 Feb 2016 10 Feb 2016 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2015 04 Nov 2015 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2015 01 Sep 2015 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Aug 2015 17 Aug 2015 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 29 May 2015 28 May 2015 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 04 May 2015 30 Apr 2015 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 06 Apr 2015 02 Apr 2015 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2015 15 Jan 2015 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 01 Dec 2014 26 Nov 2014 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2014 01 Sep 2014 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 06 May 2014 03 May 2014 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 02 May 2014 30 Apr 2014 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 27 Feb 2014 25 Feb 2014 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 24 Feb 2014 20 Feb 2014 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2013 01 Sep 2013 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 07 May 2013 03 May 2013 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 02 May 2013 01 May 2013 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Apr 2013 22 Apr 2013 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 21 Feb 2013 19 Feb 2013 000-27605
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 19 Nov 2012 01 Sep 2012 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Nov 2012 16 Nov 2012 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Sep 2012 01 Sep 2012 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2012 23 May 2012 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 08 May 2012 04 May 2012 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Apr 2012 20 Apr 2012 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 06 Jan 2012 04 Jan 2012 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2011 01 Sep 2011 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 26 Apr 2011 22 Apr 2011 000-27605
4 Open 4 document View SEC filing for 4 FORM 4 07 Jan 2011 05 Jan 2011 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2010 01 Sep 2010 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Aug 2010 27 Aug 2010 001-11038
4 Open 4 document View SEC filing for 4 FORM 4 20 Aug 2010 18 Aug 2010 000-27605
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Jul 2010 12 Jul 2010 001-33815
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2010 13 May 2010 001-33815
4 Open 4 document View SEC filing for 4 FORM 4 26 Apr 2010 22 Apr 2010 000-27605
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 02 Feb 2010 01 Feb 2010 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Feb 2010 01 Feb 2010 001-11038

About this filer

Richard J. Nigon files with the SEC under CIK 0001213869. This page aggregates EDGAR filings and related ownership activity.

FAQ

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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.
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Updates follow new EDGAR submissions and periodic data refreshes.