Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2025-05-06 Purchase | 2025-05-06 4:37 pm | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 1,100 | $7.23 | $7,953 | 18,219 (Direct) | View |
| 2025-04-25 Purchase | 2025-04-28 5:33 pm | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 1,000 | $7.452 | $7,452 | 7,954 (Direct) | View |
| 2024-04-23 Purchase | 2024-04-24 4:56 pm | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Kemp Sarah E. Director | 1,275 | $15.7 | $20,018 | 5,760 (Direct) | View |
| 2023-08-14 Purchase | 2023-08-14 4:23 pm | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 500 | $13.17 | $6,585 | 3,062 (Direct) | View |
| 2023-07-27 Sale | 2023-07-27 5:48 pm | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 1,847 | $12.17 | $22,478 | 33,600 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2025-09-01 Option Award | 2025-09-03 7:10 pm | N/A 2035-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | WOLSFELD MATTHEW C CFO and Corporate Secretary | 32,559 | $0 | 200,815 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 7:02 pm | N/A 2035-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 44,051 | $0 | 1,352,669 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 5:02 pm | 2026-09-01 2035-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 16,287 | $0 | 34,506 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:59 pm | 2026-09-01 2035-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 16,287 | $0 | 19,606 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:55 pm | 2026-09-01 2035-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Narayan Ramani Director | 16,287 | $0 | 123,050 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:50 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 8,086 | $0 | 47,148 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:46 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Kemp Sarah E. Director | 6,739 | $0 | 16,270 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:42 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Pinho Cristina Lucia Duarte Director | 6,739 | $0 | 10,510 (Direct) | View |
| 2025-08-13 Acquisition | 2025-09-03 4:12 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 5 | $7.72 | 14,741 (Direct) | View |
| 2025-05-14 Acquisition | 2025-09-03 4:12 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 6 | $7.35 | 14,741 (Direct) | View |
| 2025-02-12 Acquisition | 2025-09-03 4:12 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 20 | $11.26 | 14,741 (Direct) | View |
| 2025-09-01 Option Award | 2025-09-03 4:12 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 6,739 | $0 | 14,741 (Direct) | View |
| 2024-11-13 Acquisition | 2025-09-03 4:12 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 17 | $13.29 | 14,741 (Direct) | View |
| 2025-07-24 Exercise | 2025-07-28 5:26 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $7.43 | 39,062 (Direct) | View |
| 2025-07-24 Exercise | 2025-07-28 5:26 pm | N/A 2025-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $0 | 39,062 (Direct) | View |
| 2025-07-24 Tax Withholding | 2025-07-28 5:26 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 10,873 | $8.2 | 39,062 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 8:27 pm | 2025-09-01 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 9,843 | $0 | 26,962 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 8:20 pm | N/A 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | WOLSFELD MATTHEW C CFO and Corporate Secretary | 33,156 | $0 | 201,332 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 8:08 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Pinho Cristina Lucia Duarte Director | 3,771 | $0 | 3,771 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 7:59 pm | 2025-09-01 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 9,843 | $0 | 13,162 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 7:59 pm | 2025-09-01 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Narayan Ramani Director | 9,843 | $0 | 116,606 (Direct) | View |
| 2023-11-16 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 11 | $13.25 | 6,954 (Direct) | View |
| 2024-05-15 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 4 | $18.04 | 6,954 (Direct) | View |
| 2024-08-14 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 11 | $13.34 | 6,954 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 3,771 | $0 | 6,954 (Direct) | View |
| 2024-02-14 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 11 | $13.47 | 6,954 (Direct) | View |
| 2024-05-15 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 13 | $11.83 | 6,954 (Direct) | View |
| 2023-11-16 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 6 | $12.01 | 6,954 (Direct) | View |
| 2024-02-14 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 5 | $13.63 | 6,954 (Direct) | View |
| 2024-08-14 Acquisition | 2024-09-04 7:53 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 6 | $11.99 | 6,954 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 7:38 pm | N/A 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President & CEO 10% Owner | 44,858 | $0 | 1,353,476 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 7:24 pm | 2025-09-01 2034-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 11,811 | $0 | 49,746 (Direct) | View |
| 2024-09-01 Option Award | 2024-09-04 6:46 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Kemp Sarah E. Director | 3,771 | $0 | 9,531 (Direct) | View |
| 2024-08-26 Tax Withholding | 2024-08-29 5:47 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 7,710 | $13.67 | 1,308,618 (Direct) | View |
| 2024-08-26 Exercise | 2024-08-29 5:47 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 10,488 | $10.05 | 1,308,618 (Direct) | View |
| 2024-08-26 Exercise | 2024-08-29 5:47 pm | N/A 2024-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 10,488 | $0 | 1,308,618 (Direct) | View |
| 2024-08-01 Tax Withholding | 2024-08-02 6:21 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 7,665 | $13.11 | 37,935 (Direct) | View |
| 2024-08-01 Exercise | 2024-08-02 6:21 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $10.05 | 37,935 (Direct) | View |
| 2024-08-01 Exercise | 2024-08-02 6:21 pm | N/A 2024-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $0 | 37,935 (Direct) | View |
| 2024-07-31 Exercise | 2024-08-01 5:28 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 8,000 | $10.05 | 17,119 (Direct) | View |
| 2024-07-31 Exercise | 2024-08-01 5:28 pm | N/A 2024-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 8,000 | $0 | 17,119 (Direct) | View |
| 2024-07-31 Tax Withholding | 2024-08-01 5:28 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 6,081 | $13.22 | 17,119 (Direct) | View |
| 2024-07-15 Exercise | 2024-07-17 4:15 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | WOLSFELD MATTHEW C CFO and Corporate Secretary | 7,752 | $10.05 | 168,149 (Direct) | View |
| 2024-07-15 Exercise | 2024-07-17 4:15 pm | N/A 2024-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | WOLSFELD MATTHEW C CFO and Corporate Secretary | 7,752 | $0 | 168,149 (Direct) | View |
| 2023-05-18 Acquisition | 2023-09-06 6:18 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 16 | $11.56 | 13,037 (Direct) | View |
| 2023-02-21 Acquisition | 2023-09-06 6:18 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 14 | $13.17 | 13,037 (Direct) | View |
| 2023-08-17 Acquisition | 2023-09-06 6:18 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 14 | $13.07 | 13,037 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 6:18 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 9,921 | $0 | 13,037 (Direct) | View |
| 2022-11-16 Acquisition | 2023-09-06 6:18 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Calderon Nancy E. Director | 11 | $12.96 | 13,037 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:55 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Kemp Sarah E. Director | 9,921 | $0 | 14,406 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:49 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 11,905 | $0 | 45,505 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:43 pm | N/A 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President & CEO | 45,381 | $0 | 1,351,221 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:31 pm | N/A 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | WOLSFELD MATTHEW C CFO and Corporate Secretary | 33,543 | $0 | 193,912 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:21 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 9,921 | $0 | 25,121 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:14 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Narayan Ramani Director | 9,921 | $0 | 116,684 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:08 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 9,921 | $0 | 13,240 (Direct) | View |
| 2023-09-01 Option Award | 2023-09-06 5:01 pm | 2024-09-01 2033-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Pinho Cristina Lucia Duarte Director | 9,921 | $0 | 9,921 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-28 5:48 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 8,000 | $7.35 | 23,200 (Direct) | View |
| 2023-08-28 Exercise | 2023-08-28 5:48 pm | N/A 2023-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | von Falkenhausen Konstantin Director | 8,000 | $0 | 23,200 (Direct) | View |
| 2023-08-17 Exercise | 2023-08-21 4:07 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 8,000 | $7.35 | 3,319 (Direct) | View |
| 2023-08-17 Exercise | 2023-08-21 4:07 pm | N/A 2023-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 8,000 | $0 | 3,319 (Direct) | View |
| 2023-08-17 Tax Withholding | 2023-08-21 4:07 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | Lee Sunggyu Director | 4,681 | $12.56 | 3,319 (Direct) | View |
| 2023-08-08 Exercise | 2023-08-10 4:44 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 11,610 | $7.35 | 1,305,840 (Direct) | View |
| 2023-08-08 Exercise | 2023-08-10 4:44 pm | N/A 2023-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 11,610 | $0 | 1,305,840 (Direct) | View |
| 2023-08-08 Tax Withholding | 2023-08-10 4:44 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | LYNCH G PATRICK President and CEO 10% Owner | 6,387 | $13.36 | 1,305,840 (Direct) | View |
| 2023-07-26 Exercise | 2023-07-27 5:48 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $7.35 | 33,600 (Direct) | View |
| 2023-07-26 Tax Withholding | 2023-07-27 5:48 pm | N/A N/A | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 7,153 | $12.33 | 33,600 (Direct) | View |
| 2023-07-26 Exercise | 2023-07-27 5:48 pm | N/A 2023-08-31 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | NIGON RICHARD Director | 12,000 | $0 | 33,600 (Direct) | View |