Insider · CIK 0001258563
Matthew C Wolsfeld
Files at: NTIC. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 1, 2026 FMForm 4 → | Jul 2, 4:44 pm EDT | NORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC | 21,048 | $7.56 | $159,176 | 170,966 | — |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 AForm 4 → | Sep 3, 9:58 pm EDT | NORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC | 29,755 | — | — | 29,755 | — | |
| Jul 1, 2026 MForm 4 → | Jul 2, 4:44 pm EDT | NORTHERN TECHNOLOGIES INTERNATIONAL CORPNTIC | 11,879 | — | — | 0 | — |