NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)

Latest Insider Confidence Score

2025Q4

50.0
Bullish

Company insider confidence (by quarter)

2003Q3 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Lynch G Patrick CEO 1,308,618 Sep 3, 2025
Inter Alia Holding Co 10% Owner 601,668 Sep 14, 2011
Lynch Juliane I President 601,668 Sep 14, 2011
Wolsfeld Matthew C CFO 168,256 Sep 3, 2025
Kubik Donald A — 132,286 Sep 1, 2009

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 1, 2025 Sep 3, 2025 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2025 Sep 3, 2025 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2025 Sep 3, 2025 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2025 Sep 3, 2025 Lee Sunggyu Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2025 Sep 3, 2025 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2025 Sep 3, 2025 NIGON RICHARD Director Neutral 90.0 +8,086 20.70% ✗ -
Sep 1, 2025 Sep 3, 2025 Kemp Sarah E. Director Neutral 90.0 +6,739 70.70% ✗ -
Sep 1, 2025 Sep 3, 2025 Pinho Cristina Lucia Duarte Director Neutral 90.0 +6,739 178.71% ✗ -
Nov 13, 2024 Sep 3, 2025 Calderon Nancy E. Director Buy 85.0 +6,786 9.45% ✗ $532.3
Jul 24, 2025 Jul 28, 2025 NIGON RICHARD Director Sell 22.5 -10,873 -21.77% ✗ $89.2K
May 6, 2025 May 6, 2025 von Falkenhausen Konstantin Director Buy 85.0 +1,100 6.43% ✗ $8K
Apr 25, 2025 Apr 28, 2025 Calderon Nancy E. Director Buy 90.0 +1,000 14.38% ✗ $7.5K
Sep 1, 2024 Sep 4, 2024 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2024 Sep 4, 2024 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2024 Sep 4, 2024 Pinho Cristina Lucia Duarte Director Neutral 90.0 +3,771 100.00% ✗ -
Sep 1, 2024 Sep 4, 2024 Lee Sunggyu Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2024 Sep 4, 2024 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Nov 16, 2023 Sep 4, 2024 Calderon Nancy E. Director Buy 90.0 +3,838 13.55% ✗ $881.9
Sep 1, 2024 Sep 4, 2024 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2024 Sep 4, 2024 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2024 Sep 4, 2024 Kemp Sarah E. Director Neutral 90.0 +3,771 65.46% ✗ -
Aug 26, 2024 Aug 29, 2024 LYNCH G PATRICK CEO Sell 32.5 -7,710 -0.59% ✗ $105.4K
Aug 1, 2024 Aug 2, 2024 NIGON RICHARD Director Sell 22.5 -7,665 -16.81% ✗ $100.5K
Jul 31, 2024 Aug 1, 2024 von Falkenhausen Konstantin Director Sell 22.5 -6,081 -26.21% ✗ $80.4K
Jul 15, 2024 Jul 17, 2024 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Apr 23, 2024 Apr 24, 2024 Kemp Sarah E. Director Buy 91.3 +1,275 28.43% ✗ $20K
Nov 16, 2022 Sep 6, 2023 Calderon Nancy E. Director Buy 77.5 +54 1.78% ✗ $689.9
Sep 1, 2023 Sep 6, 2023 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 Lee Sunggyu Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2023 Sep 6, 2023 Pinho Cristina Lucia Duarte Director Neutral 52.5 - 0.00% ✗ -
Aug 28, 2023 Aug 28, 2023 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Aug 17, 2023 Aug 21, 2023 Lee Sunggyu Director Sell 22.5 -4,681 -58.51% ✗ $58.8K
Aug 14, 2023 Aug 14, 2023 Calderon Nancy E. Director Buy 90.0 +500 19.52% ✗ $6.6K
Aug 8, 2023 Aug 10, 2023 LYNCH G PATRICK CEO Sell 40.0 -6,387 -0.49% ✗ $85.3K
Jul 26, 2023 Jul 27, 2023 NIGON RICHARD Director Sell 22.5 -9,000 -21.13% ✗ $110.7K
Jul 11, 2023 Jul 12, 2023 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Apr 18, 2023 Apr 19, 2023 Kemp Sarah E. Director Buy 91.3 +2,473 122.93% ✗ $30K
Jan 30, 2023 Jan 31, 2023 Calderon Nancy E. Director Buy 90.0 +500 24.25% ✗ $6.5K
Jan 20, 2023 Jan 23, 2023 Pinho Cristina Lucia Duarte Director Neutral 52.5 - 0.00% ✗ -
Jan 23, 2023 Pinho Cristina Lucia Duarte Director Neutral 52.5 - 0.00% ✗ -
Oct 14, 2022 Oct 17, 2022 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Oct 4, 2022 Oct 6, 2022 LYNCH G PATRICK CEO Sell 22.5 -13,645 -1.04% ✗ $188.7K
Oct 4, 2022 Oct 6, 2022 WOLSFELD MATTHEW C CFO Sell 22.5 -10,086 -6.23% ✗ $139.5K
Sep 29, 2022 Oct 3, 2022 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 14, 2022 Lee Sunggyu Director Neutral 52.5 - 0.00% ✗ -
Nov 18, 2021 Sep 6, 2022 Calderon Nancy E. Director Buy 67.5 +46 0.57% ✗ $570.8
Sep 1, 2022 Sep 6, 2022 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 6, 2022 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 6, 2022 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 6, 2022 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 6, 2022 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2022 Sep 6, 2022 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Apr 22, 2022 Apr 25, 2022 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Jan 12, 2022 Jan 13, 2022 Kemp Sarah E. Director Buy 91.3 +2,012 100.00% ✗ $30K
Nov 12, 2021 Nov 12, 2021 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 Calderon Nancy E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2021 Sep 2, 2021 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Jul 7, 2021 Jul 9, 2021 Keong Koh Soo Director Neutral 52.5 - 0.00% ✗ -
Jan 25, 2021 Jan 25, 2021 Calderon Nancy E. Director Buy 91.3 +1,000 100.00% ✗ $14.8K
Sep 1, 2020 Sep 3, 2020 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 3, 2020 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 Calderon Nancy E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2020 Sep 2, 2020 Keong Koh Soo Director Neutral 52.5 - 0.00% ✗ -
Jul 23, 2020 Jul 24, 2020 Calderon Nancy E. Director Buy 90.0 +1,000 100.00% ✗ $8.6K
Oct 22, 2019 Oct 24, 2019 Calderon Nancy E. Director Neutral 52.5 - 0.00% ✗ -
Oct 22, 2019 Oct 24, 2019 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Oct 24, 2019 Calderon Nancy E. Director Neutral 52.5 - 0.00% ✗ -
Oct 24, 2019 Kemp Sarah E. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2019 Sep 4, 2019 Keong Koh Soo Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 Colwell Barbara D. Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 von Falkenhausen Konstantin Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 Keong Koh Soo Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2018 Sep 5, 2018 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 7, 2017 Sep 8, 2017 NIGON RICHARD Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2017 Sep 5, 2017 WOLSFELD MATTHEW C CFO Neutral 52.5 - 0.00% ✗ -
Sep 1, 2017 Sep 5, 2017 LYNCH G PATRICK CEO Neutral 52.5 - 0.00% ✗ -
Aug 31, 2017 Sep 5, 2017 Narayan Ramani Director Neutral 52.5 - 0.00% ✗ -
Sep 1, 2017 Sep 5, 2017 Keong Koh Soo Director Neutral 52.5 - 0.00% ✗ -