NORTHERN TECHNOLOGIES INTERNATIONAL CORP reports

Company location: Circle Pines, MN
Fiscal year end: 31 August

NORTHERN TECHNOLOGIES INTERNATIONAL CORP has filed 774 SEC EDGAR filings since 11 Jul 1996

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SEC filing history

Showing 1-25 of 519 matching filings.

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1

4

PRIMARY DOCUMENT

Filing date: 09 Sep 2026
Reporting date: 04 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

PRIMARY DOCUMENT

Filing date: 09 Sep 2026
Reporting date: 04 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

PRIMARY DOCUMENT

Filing date: 09 Sep 2026
Reporting date: 04 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-11038

FORM 8-K

Filing date: 08 Sep 2026
Reporting date: 04 Sep 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 04 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 03 Sep 2026
Reporting date: 01 Sep 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 31 Jul 2026
Reporting date: 29 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144 File 001-11038

144 filing

Filing date: 29 Jul 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 21 Jul 2026
Reporting date: 20 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144 File 001-11038

144 filing

Filing date: 20 Jul 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-11038

FORM 10-Q

Filing date: 09 Jul 2026
Reporting date: 31 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-11038

FORM 8-K

Filing date: 09 Jul 2026
Reporting date: 09 Jul 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

PRIMARY DOCUMENT

Filing date: 02 Jul 2026
Reporting date: 01 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13G/A File 005-47411

SCHEDULE 13G/A filing

Filing date: 14 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-11038

FORM 8-K

Filing date: 24 Apr 2026
Reporting date: 24 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-11038

FORM 10-Q

Filing date: 09 Apr 2026
Reporting date: 28 Feb 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-11038

FORM 8-K

Filing date: 09 Apr 2026
Reporting date: 09 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-11038

FORM 8-K

Filing date: 16 Jan 2026
Reporting date: 16 Jan 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

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