MATTHEW C. WOLSFELD SEC EDGAR Filings (CIK 0001258563)

SEC EDGAR filings, ownership reports, and insider transactions for MATTHEW C. WOLSFELD.

Business address
C/O Northern Technologies Int'l Corp., 4201 Woodland Road, Po Box 69, Circle Pines, MN, 55014
Top holdings (ownership)
NTIC
⭐ Add to watchlist ⭐
Get insider transactions for this reporting owner
MATTHEW C. WOLSFELD has filed 30 SEC EDGAR filings since 16 Dec 2005

Latest Filings

Recent SEC filings for MATTHEW C. WOLSFELD including 4.

Form type Document Filing Description Filing date Reporting date File number(s)
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 04 Sep 2024 01 Sep 2024 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jul 2024 15 Jul 2024 001-11038
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 12 Jul 2023 11 Jul 2023 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Oct 2022 04 Oct 2022 001-11038
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 PRIMARY DOCUMENT 02 Sep 2021 01 Sep 2021 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Sep 2020 01 Sep 2020 001-11038
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 PRIMARY DOCUMENT 05 Sep 2018 01 Sep 2018 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 PRIMARY DOCUMENT 06 Sep 2016 01 Sep 2016 001-11038
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 02 Sep 2014 01 Sep 2014 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Mar 2014 10 Mar 2014 001-11038
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 PRIMARY DOCUMENT 19 Nov 2012 16 Nov 2012 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Nov 2012 14 Nov 2012 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 Sep 2012 24 Sep 2012 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Nov 2011 04 Nov 2011 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Nov 2010 18 Nov 2010 001-11038
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Nov 2010 02 Nov 2010 001-11038

About this filer

MATTHEW C. WOLSFELD files with the SEC under CIK 0001258563. 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.

Related pages