Business Summary
Northern Technologies International Corporation (NTIC) develops and markets proprietary, environmentally beneficial corrosion prevention and sustainable packaging products in over 65 countries through a global network of subsidiaries, joint ventures, independent distributors, and agents. NTIC's primary business is corrosion prevention, marketed under the ZERUST® brand to automotive, general industrial, mechanical, mining, agricultural, retail consumer, and (more recently) oil and gas customers; it also markets bio-based, certified compostable polymer resin compounds and finished products under the Natur-Tec® brand as a sustainable alternative to petroleum-based plastics. NTIC has sold ZERUST® products for over 50 years and operates through 12 consolidated subsidiaries and 15 active joint ventures across North America, South America, Europe, and Asia.
Products & Services
- ZERUST® rust and corrosion prevention — plastic and paper packaging, liquids, coatings, rust removers, cleaners, diffusers, and engineered solutions, plus worldwide on-site technical consulting for corrosion prevention issues
- ZERUST® oil...
AI-generated summary of Item 1 (Business) from the 10-K filed Nov 20, 2025 — View filing on SEC.gov. May contain errors — refer to the filing for authoritative information.
Across SEC filings
Institutional holders · 13F
Q2 2026| Largest holders | Reported value |
|---|---|
| NEEDHAM INVESTMENT MANAGEMENT LLC | $6.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | $3.4M |
| DIMENSIONAL FUND ADVISORS LP | $2.9M |
| Peapod Lane Capital LLC | $1.5M |
| BALLAST ADVISORS LLC | $1.4M |
Annual results · 10-K
Fiscal 2025- Revenue
- $84.2M
- Net income
- $17.6K
As reported in the fiscal 2025 annual report.
Funds & ETFs · N-PORT
37 funds| Fund | Value | % of fund |
|---|---|---|
| Needham Aggressive Growth Fund | $6.8M | 0.26% |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VTI | $2.5M | < 0.01% |
| North Star Micro Cap Fund | $1.2M | 0.64% |
| VANGUARD EXTENDED MARKET INDEX FUND | $750.5K | < 0.01% |
| U.S. MICRO CAP PORTFOLIO | $503.4K | < 0.01% |
| Dimensional U.S. Targeted Value ETF DFAT | $375.6K | < 0.01% |
| U.S. Targeted Value Portfolio | $344.3K | < 0.01% |
| U.S. SMALL CAP PORTFOLIO | $330.2K | < 0.01% |
| Fidelity Extended Market Index Fund | $310.1K | < 0.01% |
| Dimensional U.S. Small Cap ETF DFAS | $235.3K | < 0.01% |
37 funds reported holding $14.9M in total on their latest public Form N-PORT reports, the most recent dated August 2026. Security record
Insider trades · Form 4
Latest filings
- Gautam Ramdas 2026-09-10 Award
- G Patrick Lynch 2026-09-04 Award
- Matthew C Wolsfeld 2026-09-04 Award
- Richard Nigon 2026-09-03 Award
- Sunggyu Lee 2026-09-03 Award
5%+ holders · 13D/G
1 filer| Filer | % of class | Filed |
|---|---|---|
| NEEDHAM INVESTMENT MANAGEMENT LLC 13G | 8.1% | 2026-05-14 |
Latest Schedule 13D or 13G from each filer; stakes a filer has reported closed are left out.
Federal lobbying · LD-2
Securities
| CUSIP | Security | Type |
|---|---|---|
| 665809109 | NTIC NORTHERN TECHNOLOGIES INTL | Common stock |