CIK 0000875582 · Non-accelerated filer<br>Smaller reporting company
NORTHERN TECHNOLOGIES INTERNATIONAL CORP
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- NTIC
- Exchange
- Nasdaq
- Industry
- Coating, Engraving & Allied Services
- FY end
- Aug 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 410857886
- Phone
- (763) 225-6601
- Business address
- 4201 WOODLAND ROAD, PO BOX 69, CIRCLE PINES, MN, 55014
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-07-01 | WOLSFELD MATTHEW C CFO and Corporate Secretary | Option exercise · Stock Option (right to buy) | −11,879 | 0 | ||
| 2026-02-11 | Calderon Nancy E. Director | Other acquisition | +2.37 | $8.66 | $20 | 14,749.01 |
| 2026-02-11 | Calderon Nancy E. Director | Other acquisition | +2.53 | $8.66 | $22 | 14,751.54 |
| 2025-11-12 | Calderon Nancy E. Director | Other acquisition | +2.52 | $8.12 | $20 | 14,743.95 |
| 2025-11-12 | Calderon Nancy E. Director | Other acquisition | +2.7 | $8.12 | $22 | 14,746.65 |
| 2025-09-01 | Pinho Cristina Lucia Duarte Director | Grant or award | +6,739 | 10,510 | ||
| 2025-09-01 | Kemp Sarah E. Director | Grant or award | +6,739 | 16,270.37 | ||
| 2025-09-01 | Calderon Nancy E. Director | Grant or award | +6,739 | 14,741.43 | ||
| 2025-09-01 | von Falkenhausen Konstantin Director | Grant or award · Stock Option (right to buy) | +16,287 | 16,287 | ||
| 2025-09-01 | Narayan Ramani Director | Grant or award · Stock Option (right to buy) | +16,287 | 16,287 | ||
| 2025-09-01 | Lee Sunggyu Director | Grant or award · Stock Option (right to buy) | +16,287 | 16,287 | ||
| 2025-09-01 | WOLSFELD MATTHEW C CFO and Corporate Secretary | Grant or award · Stock Option (right to buy) | +32,559 | 32,559 | ||
| 2025-09-01 | LYNCH G PATRICK President and CEO | Grant or award · Stock Option (right to buy) | +44,051 | 44,051 | ||
| 2025-09-01 | NIGON RICHARD Director | Grant or award | +8,086 | 47,148 | ||
| 2025-08-13 | Calderon Nancy E. Director | Other acquisition | +2.65 | $7.72 | $20 | 7,999.59 |
| 2025-08-13 | Calderon Nancy E. Director | Other acquisition | +2.83 | $7.72 | $22 | 8,002.43 |
| 2025-07-24 | NIGON RICHARD Director | Option exercise | +12,000 | $7.43 | $89K | 49,935 |
| 2025-07-24 | NIGON RICHARD Director | Shares withheld for taxes | −10,873 | $8.20 | $89K | 39,062 |
| 2025-07-24 | NIGON RICHARD Director | Option exercise · Stock Option (right to buy) | −12,000 | 0 | ||
| 2025-05-14 | Calderon Nancy E. Director | Other acquisition | +2.78 | $7.35 | $20 | 7,993.97 |
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