Insider · CIK 0001258563
Matthew C Wolsfeld
Files at: NTIC. On EDGAR ↗
Reported trades — common stock
No reported common-stock activity in this period.
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 | — |