NTIC · Insider Trading
Northern Technologies International Corp.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-09 | Gautam Ramdas | President and CEO | A | +43,805 | — |
| 2026-09-04 | G Patrick Lynch | President and CEO | A | — | — |
| 2026-09-03 | Cristina Lucia Duarte Pinho | Director | A | +6,188 | — |
| 2026-09-03 | Ramani Narayan | Director | A | — | — |
| 2026-09-03 | Sarah E. Kemp | Director | A | +6,188 | — |
| 2026-09-03 | Richard Nigon | Director | A | +7,426 | — |
| 2026-09-03 | Matthew C Wolsfeld | CFO and Corporate Secretary | A | — | — |
| 2026-09-03 | Sunggyu Lee | Director | A | +6,188 | — |
| 2026-09-03 | Nancy E. Calderon | Director | MIXED | +6,198 | +$85 |
| 2026-09-03 | Konstantin von Falkenhausen | Director | A | — | — |
| 2026-07-31 | G Patrick Lynch | President and CEO | MIXED | — | −$20.84K |
| 2026-07-21 | Richard Nigon | Director | MIXED | — | −$15.65K |
| 2026-07-02 | Matthew C Wolsfeld | CFO and Corporate Secretary | MIXED | +2,710 | +$2 |
| 2025-09-03 | Richard Nigon | Director | A | +8,086 | — |
| 2025-09-03 | Sarah E. Kemp | Director | A | +6,739 | — |
| 2025-09-03 | Cristina Lucia Duarte Pinho | Director | A | +6,739 | — |
| 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 | +6,786 | +$532 |
| 2025-09-03 | Konstantin von Falkenhausen | Director | A | — | — |
| 2025-07-28 | Richard Nigon | Director | MIXED | +1,127 | +$1 |
| 2025-05-06 | Konstantin von Falkenhausen | Director | Buy | +1,100 | +$7.95K |
| 2025-04-28 | Nancy E. Calderon | Director | Buy | +1,000 | +$7.45K |
| 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 | +3,771 | — |
| 2024-09-04 | G Patrick Lynch | President & CEO | A | — | — |
| 2024-09-04 | Cristina Lucia Duarte Pinho | Director | A | +3,771 | — |
| 2024-09-04 | Richard Nigon | Director | A | — | — |
| 2024-09-04 | Sunggyu Lee | Director | A | — | — |
| 2024-09-04 | Nancy E. Calderon | Director | MIXED | +3,838 | +$882 |
| 2024-08-29 | G Patrick Lynch | President and CEO | MIXED | +2,778 | +$9 |
| 2024-08-02 | Richard Nigon | Director | MIXED | +4,335 | +$20.11K |
| 2024-08-01 | Konstantin von Falkenhausen | Director | MIXED | +1,919 | +$9 |
| 2024-07-17 | Matthew C Wolsfeld | CFO and Corporate Secretary | M | +7,752 | +$77.91K |
| 2024-04-24 | Sarah E. Kemp | Director | Buy | +1,275 | +$20.02K |
| 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 | +54 | +$690 |
| 2023-09-06 | G Patrick Lynch | President & CEO | A | — | — |
| 2023-08-28 | Konstantin von Falkenhausen | Director | M | +8,000 | +$58.80K |
| 2023-08-21 | Sunggyu Lee | Director | MIXED | +3,319 | +$7 |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| G Patrick Lynch | President and CEO | 1,308,618 | $9.97M |
| Matthew C Wolsfeld | CFO and Corporate Secretary | 170,966 | $1.30M |
| Gautam Ramdas | President and CEO | 118,932 | $906.26K |
| Ramani Narayan | Director | 106,763 | $813.53K |
| Richard Nigon | Director | 54,574 | $415.85K |
| Sarah E. Kemp | Director | 22,458 | $171.13K |
| Konstantin von Falkenhausen | Director | 18,219 | $138.83K |
| Cristina Lucia Duarte Pinho | Director | 16,698 | $127.24K |
| Nancy E. Calderon | Director | 14,751 | $112.41K |
| Sunggyu Lee | Director | 9,507 | $72.44K |
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.
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.