Northern Technologies International Corp also files under NTI; those filings are included.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 4, 2026 | Ramdas Gautam | President and CEO | Grant(A) | 15K | — | $0 |
| Sep 4, 2026 | Ramdas Gautam | President and CEO | Grant(A) | 44K | — | $0 |
| Sep 1, 2026 | Pinho Cristina Lucia Duarte | Director | Grant(A) | 6K | — | $0 |
| Sep 1, 2026 | Narayan Ramani | Director | Grant(A) | 15K | — | $0 |
| Sep 1, 2026 | von Falkenhausen Konstantin | Director | Grant(A) | 15K | — | $0 |
| Sep 1, 2026 | Lee Sunggyu | Director | Grant(A) | 6K | — | $0 |
| Sep 1, 2026 | Nigon Richard | Director | Grant(A) | 7K | — | $0 |
| Sep 1, 2026 | Lynch G Patrick | President and CEO, Director, 10% Owner | Grant(A) | 40K | — | $0 |
| Sep 1, 2026 | Wolsfeld Matthew C | CFO and Corporate Secretary | Grant(A) | 30K | — | $0 |
| Sep 1, 2026 | Calderon Nancy E. | Director | Grant(A) | 6K | — | $0 |
| Sep 1, 2026 | Kemp Sarah E. | Director | Grant(A) | 6K | — | $0 |
| Jul 30, 2026 | Lynch G Patrick | President and CEO, Director, 10% Owner | Sell(S) | 16K | $8.00 | $129K |
| Jul 29, 2026 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | $6.70 | $108K |
| Jul 29, 2026 | Lynch G Patrick | President and CEO, Director, 10% Owner | Sell(S) | 2 | $8.10 | $16 |
| Jul 29, 2026 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | — | $0 |
| Jul 20, 2026 | Nigon Richard | Director | Option exercise(M) | 12K | $6.70 | $80K |
| Jul 20, 2026 | Nigon Richard | Director | Option exercise(M) | 12K | — | $0 |
| Jul 20, 2026 | Nigon Richard | Director | Sell(S) | 12K | $8.00 | $96K |
| Jul 1, 2026 | Wolsfeld Matthew C | CFO and Corporate Secretary | Tax withholding(F) | 9K | $8.68 | $80K |
| Jul 1, 2026 | Wolsfeld Matthew C | CFO and Corporate Secretary | Option exercise(M) | 12K | — | $0 |
| Jul 1, 2026 | Wolsfeld Matthew C | CFO and Corporate Secretary | Option exercise(M) | 12K | $6.70 | $80K |
| Feb 11, 2026 | Calderon Nancy E. | Director | Small acquisition(L) | 2 | $8.66 | $20 |
| Feb 11, 2026 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $8.66 | $22 |
| Nov 12, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $8.12 | $22 |
| Nov 12, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $8.12 | $20 |
| Sep 1, 2025 | Lee Sunggyu | Director | Grant(A) | 16K | — | $0 |
| Sep 1, 2025 | Wolsfeld Matthew C | CFO and Corporate Secretary | Grant(A) | 33K | — | $0 |
| Sep 1, 2025 | Calderon Nancy E. | Director | Grant(A) | 7K | — | $0 |
| Sep 1, 2025 | Lynch G Patrick | President and CEO, Director, 10% Owner | Grant(A) | 44K | — | $0 |
| Sep 1, 2025 | Pinho Cristina Lucia Duarte | Director | Grant(A) | 7K | — | $0 |
| Sep 1, 2025 | Kemp Sarah E. | Director | Grant(A) | 7K | — | $0 |
| Sep 1, 2025 | von Falkenhausen Konstantin | Director | Grant(A) | 16K | — | $0 |
| Sep 1, 2025 | Nigon Richard | Director | Grant(A) | 8K | — | $0 |
| Sep 1, 2025 | Narayan Ramani | Director | Grant(A) | 16K | — | $0 |
| Aug 13, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $7.72 | $20 |
| Aug 13, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $7.72 | $22 |
| Jul 24, 2025 | Nigon Richard | Director | Option exercise(M) | 12K | $7.43 | $89K |
| Jul 24, 2025 | Nigon Richard | Director | Option exercise(M) | 12K | — | $0 |
| Jul 24, 2025 | Nigon Richard | Director | Tax withholding(F) | 11K | $8.20 | $89K |
| May 14, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $7.35 | $20 |
| May 14, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 3 | $7.35 | $22 |
| May 6, 2025 | von Falkenhausen Konstantin | Director | Buy(P) | 1K | $7.23 | $8K |
| Apr 25, 2025 | Calderon Nancy E. | Director | Buy(P) | 1K | $7.45 | $7K |
| Feb 12, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 6 | $11.26 | $72 |
| Feb 12, 2025 | Calderon Nancy E. | Director | Small acquisition(L) | 14 | $11.26 | $152 |
| Nov 13, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 5 | $13.29 | $72 |
| Nov 13, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 11 | $13.29 | $151 |
| Sep 1, 2024 | Lynch G Patrick | President & CEO, Director, 10% Owner | Grant(A) | 45K | — | $0 |
| Sep 1, 2024 | Nigon Richard | Director | Grant(A) | 12K | — | $0 |
| Sep 1, 2024 | Kemp Sarah E. | Director | Grant(A) | 4K | — | $0 |
| Sep 1, 2024 | Lee Sunggyu | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2024 | Pinho Cristina Lucia Duarte | Director | Grant(A) | 4K | — | $0 |
| Sep 1, 2024 | Narayan Ramani | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2024 | von Falkenhausen Konstantin | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2024 | Wolsfeld Matthew C | CFO and Corporate Secretary | Grant(A) | 33K | — | $0 |
| Sep 1, 2024 | Calderon Nancy E. | Director | Grant(A) | 4K | — | $0 |
| Aug 26, 2024 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 10K | — | $0 |
| Aug 26, 2024 | Lynch G Patrick | President and CEO, Director, 10% Owner | Tax withholding(F) | 8K | $13.67 | $105K |
| Aug 26, 2024 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 10K | $10.05 | $105K |
| Aug 14, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 11 | $13.34 | $150 |
| Aug 14, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 6 | $11.99 | $72 |
| Aug 1, 2024 | Nigon Richard | Director | Option exercise(M) | 12K | — | $0 |
| Aug 1, 2024 | Nigon Richard | Director | Tax withholding(F) | 8K | $13.11 | $100K |
| Aug 1, 2024 | Nigon Richard | Director | Option exercise(M) | 12K | $10.05 | $121K |
| Jul 31, 2024 | von Falkenhausen Konstantin | Director | Tax withholding(F) | 6K | $13.22 | $80K |
| Jul 31, 2024 | von Falkenhausen Konstantin | Director | Option exercise(M) | 8K | — | $0 |
| Jul 31, 2024 | von Falkenhausen Konstantin | Director | Option exercise(M) | 8K | $10.05 | $80K |
| Jul 15, 2024 | Wolsfeld Matthew C | CFO and Corporate Secretary | Option exercise(M) | 8K | — | $0 |
| Jul 15, 2024 | Wolsfeld Matthew C | CFO and Corporate Secretary | Option exercise(M) | 8K | $10.05 | $78K |
| May 15, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 4 | $18.04 | $71 |
| May 15, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 13 | $11.83 | $150 |
| Apr 23, 2024 | Kemp Sarah E. | Director | Buy(P) | 1K | $15.70 | $20K |
| Feb 14, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 11 | $13.47 | $149 |
| Feb 14, 2024 | Calderon Nancy E. | Director | Small acquisition(L) | 5 | $13.63 | $71 |
| Nov 16, 2023 | Calderon Nancy E. | Director | Small acquisition(L) | 6 | $12.01 | $71 |
| Nov 16, 2023 | Calderon Nancy E. | Director | Small acquisition(L) | 11 | $13.25 | $148 |
| Sep 1, 2023 | Calderon Nancy E. | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2023 | Kemp Sarah E. | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2023 | Nigon Richard | Director | Grant(A) | 12K | — | $0 |
| Sep 1, 2023 | Lynch G Patrick | President & CEO, Director | Grant(A) | 45K | — | $0 |
| Sep 1, 2023 | Wolsfeld Matthew C | CFO and Corporate Secretary | Grant(A) | 34K | — | $0 |
| Sep 1, 2023 | von Falkenhausen Konstantin | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2023 | Narayan Ramani | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2023 | Lee Sunggyu | Director | Grant(A) | 10K | — | $0 |
| Sep 1, 2023 | Pinho Cristina Lucia Duarte | Director | Grant(A) | 10K | — | $0 |
| Aug 28, 2023 | von Falkenhausen Konstantin | Director | Option exercise(M) | 8K | $7.35 | $59K |
| Aug 28, 2023 | von Falkenhausen Konstantin | Director | Option exercise(M) | 8K | — | $0 |
| Aug 17, 2023 | Lee Sunggyu | Director | Option exercise(M) | 8K | — | $0 |
| Aug 17, 2023 | Lee Sunggyu | Director | Option exercise(M) | 8K | $7.35 | $59K |
| Aug 17, 2023 | Lee Sunggyu | Director | Tax withholding(F) | 5K | $12.56 | $59K |
| Aug 17, 2023 | Calderon Nancy E. | Director | Small acquisition(L) | 14 | $13.07 | $183 |
| Aug 14, 2023 | Calderon Nancy E. | Director | Buy(P) | 500 | $13.17 | $7K |
| Aug 8, 2023 | Lynch G Patrick | President and CEO, Director, 10% Owner | Tax withholding(F) | 6K | $13.36 | $85K |
| Aug 8, 2023 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 12K | $7.35 | $85K |
| Aug 8, 2023 | Lynch G Patrick | President and CEO, Director, 10% Owner | Option exercise(M) | 12K | — | $0 |
| Jul 27, 2023 | Nigon Richard | Director | Sell(S) | 2K | $12.17 | $22K |
| Jul 26, 2023 | Nigon Richard | Director | Tax withholding(F) | 7K | $12.33 | $88K |
| Jul 26, 2023 | Nigon Richard | Director | Option exercise(M) | 12K | $7.35 | $88K |
| Jul 26, 2023 | Nigon Richard | Director | Option exercise(M) | 12K | — | $0 |
| Jul 11, 2023 | Wolsfeld Matthew C | CFO and Corporate Secretary | Option exercise(M) | 9K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Issuer: Northern Technologies International Corp, SEC CIK 0000875582. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under NTIC and shows every filing by that issuer (also filed as NTI).
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for NTIC