NORTHERN TECHNOLOGIES INTERNATIONAL CORP — DEFA14A Filings
21 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC), sorted by most recent first. Each row links to the full filing on EdgarLookup. NORTHERN TECHNOLOGIES INTERNATIONAL CORP has filed 21 DEFA14A documents with the SEC since 1996. To view all SEC filings by NORTHERN TECHNOLOGIES INTERNATIONAL CORP, see the full filings list.
All
10-K
10-Q
10-Q/A
10KSB
10KSB/A
10KSB40
10QSB
144
25
3
4
4/A
424B5
5
8-A12B
8-A12B/A
8-K
ARS
CERTNAS
CORRESP
DEF 14A
DEFA14A
EFFECT
NT 10-Q
NTN 10K
PRE 14A
S-3
S-3/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | FORM DEFA14A | 0001171843-25-007668 | Dec 1, 2025 | — |
| DEFA14A | FORM DEFA14A | 0001171843-24-006643 | Dec 2, 2024 | — |
| DEFA14A | DEFA14A | 0001171843-23-007391 | Dec 4, 2023 | — |
| DEFA14A | DEFA14A | 0001171843-22-008115 | Dec 20, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-22-007811 | Dec 5, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-21-008333 | Dec 6, 2021 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-20-008228 | Nov 30, 2020 | — |
| DEFA14A | DEFA14A | 0001171843-19-007883 | Dec 2, 2019 | — |
| DEFA14A | DEFA14A | 0001171843-18-008238 | Nov 30, 2018 | — |
| DEFA14A | FORM 8-K | 0001171843-18-000503 | Jan 22, 2018 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-17-007285 | Nov 27, 2017 | — |
| DEFA14A | DEFA14A | 0001171843-16-013377 | Nov 28, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-15-006623 | Dec 3, 2015 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-14-005759 | Dec 3, 2014 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-13-004956 | Dec 10, 2013 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-12-004386 | Dec 5, 2012 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001171843-11-003744 | Dec 19, 2011 | — |
| DEFA14A | DEFA14A | 0001104659-10-061228 | Dec 6, 2010 | — |
| DEFA14A | DEFA14A | 0001104659-09-069239 | Dec 10, 2009 | — |
| DEFA14A | DEFA14A | 0001104659-08-076082 | Dec 12, 2008 | — |
| DEFA14A | ADDITIONAL PROXY SOLICITING MATERIALS - DEFINITIVE | 0001206774-07-002857 | Dec 12, 2007 | — |