NTIC (Northern Technologies International Corp.)
Insider Trading Activity
Every open-market purchase and sale reported by NTIC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-09 | Gautam Ramdas | President and CEO | A | — | — |
| 2026-09-04 | G PATRICK LYNCH | President and CEO | A | — | — |
| 2026-09-03 | Cristina Lucia Duarte Pinho | Director | A | — | — |
| 2026-09-03 | Ramani Narayan | Director | A | — | — |
| 2026-09-03 | Sarah E. Kemp | Director | A | — | — |
| 2026-09-03 | RICHARD NIGON | Director | A | — | — |
| 2026-09-03 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | A | — | — |
| 2026-09-03 | Sunggyu Lee | Director | A | — | — |
| 2026-09-03 | Nancy E. Calderon | Director | MIXED | — | — |
| 2026-09-03 | Konstantin von Falkenhausen | Director | A | — | — |
| 2026-07-31 | G PATRICK LYNCH | President and CEO | MIXED | — | — |
| 2026-07-21 | RICHARD NIGON | Director | MIXED | — | — |
| 2026-07-02 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | MIXED | — | — |
| 2025-09-03 | RICHARD NIGON | Director | A | — | — |
| 2025-09-03 | Sarah E. Kemp | Director | A | — | — |
| 2025-09-03 | Cristina Lucia Duarte Pinho | Director | A | — | — |
| 2025-09-03 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | A | — | — |
| 2025-09-03 | Ramani Narayan | Director | A | — | — |
| 2025-09-03 | Sunggyu Lee | Director | A | — | — |
| 2025-09-03 | G PATRICK LYNCH | President and CEO | A | — | — |
| 2025-09-03 | Nancy E. Calderon | Director | MIXED | — | — |
| 2025-09-03 | Konstantin von Falkenhausen | Director | A | — | — |
| 2025-07-28 | RICHARD NIGON | Director | MIXED | — | — |
| 2025-05-06 | Konstantin von Falkenhausen | Director | Buy | — | — |
| 2025-04-28 | Nancy E. Calderon | Director | Buy | — | — |
| 2024-09-04 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | A | — | — |
| 2024-09-04 | Ramani Narayan | Director | A | — | — |
| 2024-09-04 | Konstantin von Falkenhausen | Director | A | — | — |
| 2024-09-04 | Sarah E. Kemp | Director | A | — | — |
| 2024-09-04 | G PATRICK LYNCH | President & CEO | A | — | — |
| 2024-09-04 | Cristina Lucia Duarte Pinho | Director | A | — | — |
| 2024-09-04 | RICHARD NIGON | Director | A | — | — |
| 2024-09-04 | Sunggyu Lee | Director | A | — | — |
| 2024-09-04 | Nancy E. Calderon | Director | MIXED | — | — |
| 2024-08-29 | G PATRICK LYNCH | President and CEO | MIXED | — | — |
| 2024-08-02 | RICHARD NIGON | Director | MIXED | — | — |
| 2024-08-01 | Konstantin von Falkenhausen | Director | MIXED | — | — |
| 2024-07-17 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | M | — | — |
| 2024-04-24 | Sarah E. Kemp | Director | Buy | — | — |
| 2023-09-06 | Sarah E. Kemp | Director | A | — | — |
| 2023-09-06 | MATTHEW C WOLSFELD | CFO and Corporate Secretary | A | — | — |
| 2023-09-06 | RICHARD NIGON | Director | A | — | — |
| 2023-09-06 | Cristina Lucia Duarte Pinho | Director | A | — | — |
| 2023-09-06 | Ramani Narayan | Director | A | — | — |
| 2023-09-06 | Konstantin von Falkenhausen | Director | A | — | — |
| 2023-09-06 | Sunggyu Lee | Director | A | — | — |
| 2023-09-06 | Nancy E. Calderon | Director | L | — | — |
| 2023-09-06 | G PATRICK LYNCH | President & CEO | A | — | — |
| 2023-08-28 | Konstantin von Falkenhausen | Director | M | — | — |
| 2023-08-21 | Sunggyu Lee | Director | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 2,440,272 | — |
| — | President and CEO | 1,308,618 | — |
| — | President | 1,204,568 | — |
| — | Vice Chairman and CTO | 264,572 | — |
| — | CFO and Corporate Secretary | 170,966 | — |
| — | President and CEO | 118,932 | — |
| — | Director | 106,763 | — |
| — | Director | 57,332 | — |
| — | Director | 54,574 | — |
| — | Director | 22,458 | — |
| — | Director | 18,219 | — |
| — | Director | 16,698 | — |
| — | Director | 14,751 | — |
| — | Director | 9,507 | — |
| — | Director | 9,000 | — |
| — | Director | 3,000 | — |
| — | Director | 1,000 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the NTIC quote page; the site-wide leaderboard is on the insider transactions hub.