NTIC · Northern Technologies International Corporation Common Stock
View on chartInsiders & Stakes
| Matthew C. Wolsfeld CFO and Corporate Secretary | ▼ Sell | Tax Withholding | 170,966 Shares held | 7/1/2026 | View profile |
| Narayan Ramani Director | ▲ Buy | Option Exercise | 106,763 Shares held | 9/29/2022 | View profile |
| G. Patrick Lynch President and CEO | ▼ Sell | Open Market | 105,284 Shares held | 7/30/2026 | View profile |
| Richard Nigon Director | ▼ Sell | Open Market | 47,148 Shares held | 7/20/2026 | View profile |
| von Falkenhausen Konstantin Director | ▲ Buy | Open Market | 18,219 Shares held | 5/6/2025 | View profile |
| Sarah E. Kemp Director | ▲ Buy | Grant | 16,270 Shares held | 9/1/2025 | View profile |
| Nancy E. Calderon Director | ▲ Buy | Grant | 14,741 Shares held | 9/1/2025 | View profile |
| Cristina Lucia Duarte Pinho Director | ▲ Buy | Grant | 10,510 Shares held | 9/1/2025 | View profile |
| Sunggyu Lee Director | ▼ Sell | Tax Withholding | 3,319 Shares held | 8/17/2023 | View profile |
Transaction History
| G. Patrick Lynch | ▼ Sell | Open Market | 16,070 | $129K | 7/30/2026 |
| G. Patrick Lynch | ▲ Buy | Option Exercise | 16,072 | $108K | 7/29/2026 |
| G. Patrick Lynch | ▼ Sell | Open Market | 2 | $16 | 7/29/2026 |
| Richard Nigon | ▲ Buy | Option Exercise | 12,000 | $80K | 7/20/2026 |
| Richard Nigon | ▼ Sell | Open Market | 12,000 | $96K | 7/20/2026 |
| Matthew C. Wolsfeld | ▲ Buy | Option Exercise | 11,879 | $80K | 7/1/2026 |
| Matthew C. Wolsfeld | ▼ Sell | Tax Withholding | 9,169 | $80K | 7/1/2026 |
| Richard Nigon | ▲ Buy | Grant | 8,086 | $0 | 9/1/2025 |
| Sarah E. Kemp | ▲ Buy | Grant | 6,739 | $0 | 9/1/2025 |
| Cristina Lucia Duarte Pinho | ▲ Buy | Grant | 6,739 | $0 | 9/1/2025 |
| Nancy E. Calderon | ▲ Buy | Grant | 6,739 | $0 | 9/1/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 3 | $20 | 8/13/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 3 | $22 | 8/13/2025 |
| Richard Nigon | ▲ Buy | Option Exercise | 12,000 | $89K | 7/24/2025 |
| Richard Nigon | ▼ Sell | Tax Withholding | 10,873 | $89K | 7/24/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 3 | $20 | 5/14/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 3 | $22 | 5/14/2025 |
| von Falkenhausen Konstantin | ▲ Buy | Open Market | 1,100 | $8K | 5/6/2025 |
| Nancy E. Calderon | ▲ Buy | Open Market | 1,000 | $7K | 4/25/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 6 | $72 | 2/12/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 13 | $152 | 2/12/2025 |
| Nancy E. Calderon | ▼ Sell | Other | 5 | $72 | 11/13/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $151 | 11/13/2024 |
| Cristina Lucia Duarte Pinho | ▲ Buy | Grant | 3,771 | $0 | 9/1/2024 |
| Nancy E. Calderon | ▲ Buy | Grant | 3,771 | $0 | 9/1/2024 |
| Sarah E. Kemp | ▲ Buy | Grant | 3,771 | $0 | 9/1/2024 |
| G. Patrick Lynch | ▲ Buy | Option Exercise | 10,488 | $105K | 8/26/2024 |
| G. Patrick Lynch | ▼ Sell | Tax Withholding | 7,710 | $105K | 8/26/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 6 | $72 | 8/14/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $150 | 8/14/2024 |
| Richard Nigon | ▲ Buy | Option Exercise | 12,000 | $121K | 8/1/2024 |
| Richard Nigon | ▼ Sell | Tax Withholding | 7,665 | $100K | 8/1/2024 |
| von Falkenhausen Konstantin | ▲ Buy | Option Exercise | 8,000 | $80K | 7/31/2024 |
| von Falkenhausen Konstantin | ▼ Sell | Tax Withholding | 6,081 | $80K | 7/31/2024 |
| Matthew C. Wolsfeld | ▲ Buy | Option Exercise | 7,752 | $78K | 7/15/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 4 | $71 | 5/15/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 13 | $150 | 5/15/2024 |
| Sarah E. Kemp | ▲ Buy | Open Market | 1,275 | $20K | 4/23/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 5 | $71 | 2/14/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $149 | 2/14/2024 |
| Nancy E. Calderon | ▼ Sell | Other | 6 | $71 | 11/16/2023 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $148 | 11/16/2023 |
| von Falkenhausen Konstantin | ▲ Buy | Option Exercise | 8,000 | $59K | 8/28/2023 |
| Nancy E. Calderon | ▼ Sell | Other | 14 | $183 | 8/17/2023 |
| Sunggyu Lee | ▲ Buy | Option Exercise | 8,000 | $59K | 8/17/2023 |
| Sunggyu Lee | ▼ Sell | Tax Withholding | 4,681 | $59K | 8/17/2023 |
| Nancy E. Calderon | ▲ Buy | Open Market | 500 | $7K | 8/14/2023 |
| G. Patrick Lynch | ▲ Buy | Option Exercise | 11,610 | $85K | 8/8/2023 |
| G. Patrick Lynch | ▼ Sell | Tax Withholding | 6,387 | $85K | 8/8/2023 |
| Richard Nigon | ▼ Sell | Open Market | 1,847 | $22K | 7/27/2023 |
| Richard Nigon | ▲ Buy | Option Exercise | 12,000 | $88K | 7/26/2023 |
| Richard Nigon | ▼ Sell | Tax Withholding | 7,153 | $88K | 7/26/2023 |
| Matthew C. Wolsfeld | ▲ Buy | Option Exercise | 8,582 | $63K | 7/11/2023 |
| Nancy E. Calderon | ▼ Sell | Other | 16 | $182 | 5/18/2023 |
| Sarah E. Kemp | ▲ Buy | Open Market | 2,473 | $30K | 4/18/2023 |
| Nancy E. Calderon | ▼ Sell | Other | 14 | $181 | 2/21/2023 |
| Nancy E. Calderon | ▲ Buy | Open Market | 500 | $6K | 1/30/2023 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $145 | 11/16/2022 |
| von Falkenhausen Konstantin | ▲ Buy | Option Exercise | 6,000 | $31K | 10/14/2022 |
| G. Patrick Lynch | ▲ Buy | Option Exercise | 36,824 | $189K | 10/4/2022 |
| G. Patrick Lynch | ▼ Sell | Tax Withholding | 13,645 | $189K | 10/4/2022 |
| Matthew C. Wolsfeld | ▲ Buy | Option Exercise | 27,218 | $139K | 10/4/2022 |
| Matthew C. Wolsfeld | ▼ Sell | Tax Withholding | 10,086 | $139K | 10/4/2022 |
| Narayan Ramani | ▲ Buy | Option Exercise | 8,000 | $54K | 9/29/2022 |
| Narayan Ramani | ▲ Buy | Option Exercise | 8,000 | $73K | 9/29/2022 |
| Narayan Ramani | ▲ Buy | Option Exercise | 11,737 | $127K | 9/29/2022 |
| Narayan Ramani | ▲ Buy | Option Exercise | 16,026 | $132K | 9/29/2022 |
| Nancy E. Calderon | ▼ Sell | Other | 13 | $144 | 8/18/2022 |
| Nancy E. Calderon | ▼ Sell | Other | 14 | $143 | 5/19/2022 |
| Narayan Ramani | ▲ Buy | Option Exercise | 8,000 | $59K | 4/22/2022 |
| Nancy E. Calderon | ▼ Sell | Other | 11 | $142 | 2/17/2022 |
| Sarah E. Kemp | ▲ Buy | Open Market | 1,980 | $30K | 1/12/2022 |
| Sarah E. Kemp | ▲ Buy | Open Market | 32 | $480 | 1/12/2022 |
| Nancy E. Calderon | ▼ Sell | Other | 9 | $142 | 11/18/2021 |
| Narayan Ramani | ▲ Buy | Option Exercise | 8,000 | $59K | 11/12/2021 |
| Narayan Ramani | ▲ Buy | Option Exercise | 8,000 | $80K | 11/12/2021 |