NORTHERN TECHNOLOGIES INTERNATIONAL CORP
NTIC · Coating, Engraving & Allied Services · 9.5M shares · +2%/yr ↑ shares · EDGAR filings ↗
Net buyback after stock comp: -$1M (gross $196K, SBC $1M)
Reference price $7.23 · est. market cap ~$69M — last insider purchase, 2025-05-06 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
C60A small, diversified corrosion-prevention and bioplastics company with stable but razor-thin profitability and heavy reliance on JV income.
Strengths
- Operating margin mid-pack (54th pct) and positive FCF ($0.9M, 41st pct) with a 50-year ZERUST franchise across 65+ countries
- New offshore oil & gas contract (~US$13M) and Natur-Tec preferred-supplier deal offer FY2026 growth optionality
Risks
- Near-zero bottom-line returns (ROE/ROA ~0.02%, net margin ~0.0%) leave no margin for error
- Earnings depend heavily on equity income from joint ventures (esp. Germany) and are exposed to China governance/IP and FX risk
Quarterly revenue
Last 4 quarters · from SEC filings.
Key metrics
Gross margin
37.6%
Operating margin
3.1%
Net margin
0.0%
Return on equity
0.0%
Return on assets
0.0%
Revenue growth (QoQ)
-5.6%
Net-income growth
-99.7%
Current ratio
1.9×
Free cash flow
$917K
Tangible book value
$59M
Cash & investments
$7M
Stock comp / revenue
1.6%
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2025-09-01 | Pinho Cristina Lucia Duarte | Grant | 6.7K | — |
| 2025-09-01 | Kemp Sarah E. | Grant | 6.7K | — |
| 2025-09-01 | NIGON RICHARD | Grant | 8.1K | — |
| 2025-09-01 | Calderon Nancy E. | Grant | 6.7K | — |
| 2025-08-13 | Calderon Nancy E. | L | 3 | $7.72 |
| 2025-08-13 | Calderon Nancy E. | L | 3 | $7.72 |
| 2025-07-24 | NIGON RICHARD | Tax withheld | 11K | $8.20 |
| 2025-07-24 | NIGON RICHARD | Option exercise | 12K | $7.43 |
| 2025-05-14 | Calderon Nancy E. | L | 3 | $7.35 |
| 2025-05-14 | Calderon Nancy E. | L | 3 | $7.35 |
| 2025-05-06 | von Falkenhausen Konstantin | Buy | 1.1K | $7.23 |
| 2025-04-25 | Calderon Nancy E. | Buy | 1.0K | $7.45 |
| 2025-02-12 | Calderon Nancy E. | L | 6 | $11.26 |
| 2025-02-12 | Calderon Nancy E. | L | 13 | $11.26 |
All non-derivative Form 4 activity (SEC), newest first.
Notable events (8-K)
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-04-24 | 2026-04-24 | 0001171843-26-002704 ↗ |
| 8-K | 2026-04-09 | 2026-04-09 | 0001171843-26-002339 ↗ |
| 10-Q | 2026-04-09 | 2026-02-28 | 0001171843-26-002340 ↗ |
| 8-K | 2026-01-16 | 2026-01-16 | 0001171843-26-000314 ↗ |
| 10-Q | 2026-01-08 | 2025-11-30 | 0001171843-26-000136 ↗ |
| 8-K | 2026-01-08 | 2026-01-08 | 0001171843-26-000135 ↗ |
| 8-K | 2025-12-19 | 2025-12-18 | 0001171843-25-008020 ↗ |
| 10-K | 2025-11-20 | 2025-08-31 | 0001171843-25-007481 ↗ |
| 8-K | 2025-11-18 | 2025-11-18 | 0001171843-25-007399 ↗ |
| 10-Q | 2025-07-11 | 2025-05-31 | 0001171843-25-004413 ↗ |
| 8-K | 2025-07-11 | 2025-07-10 | 0001171843-25-004410 ↗ |
| 10-Q | 2025-04-10 | 2025-02-28 | 0001171843-25-002130 ↗ |