| 04/24/2026 4:00 PM | Northern Technologies International (875582) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 04/09/2026 7:00 AM | Northern Technologies International (875582) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 04/09/2026 7:00 AM | Northern Technologies International (875582) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 01/08/2026 7:00 AM | Northern Technologies International (875582) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 01/08/2026 7:01 AM | Northern Technologies International (875582) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 12/18/2025 8:41 PM | Northern Technologies International (875582) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 12/01/2025 7:00 AM | Northern Technologies International (875582) Filer | Form DEFA14A | |
| 12/01/2025 7:01 AM | Northern Technologies International (875582) Filer | Form DEF 14A | |
| 12/01/2025 7:01 AM | Northern Technologies International (875582) Filer | Form ARS | |
| 11/20/2025 3:00 PM | Northern Technologies International (875582) Filer | Form 10-K Annual report pursuant to Section 13 or 15(d) | |
| 11/18/2025 7:01 AM | Northern Technologies International (875582) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 11/13/2025 4:42 PM | NEEDHAM INVESTMENT MANAGEMENT LLC (1167212) Filed by Northern Technologies International (875582) Subject | Form SCHEDULE 13G/A | |
| 09/03/2025 6:10 PM | Northern Technologies International (875582) Issuer WOLSFELD MATTHEW C (1258563) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 6:02 PM | LYNCH G PATRICK (1258554) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 3:46 PM | Kemp Sarah E. (1791493) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 3:50 PM | NIGON RICHARD (1213869) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 3:55 PM | Narayan Ramani (1309741) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 3:12 PM | Calderon Nancy E. (1791477) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/28/2025 4:26 PM | NIGON RICHARD (1213869) Reporting Northern Technologies International (875582) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/06/2025 3:37 PM | Northern Technologies International (875582) Issuer von Falkenhausen Konstantin (1562252) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |