Northern Technologies International's top three insider shareholders as of March 23, 2026 are Matthew C Wolsfeld (Cfo And Corporate Secretary, 168.15K shares), Ramani Narayan (Director, 106.76K shares), G Patrick Lynch (President And Ceo, 105.28K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Matthew C Wolsfeld | Cfo And Corporate Secretary | 168,149 | 0 | 16 Jul, 2024 |
| Ramani Narayan | 106,763 | 0 | 03 Oct, 2022 | |
| G Patrick Lynch | President And Ceo | 105,284 | 0 | 29 Aug, 2024 |
| Koh Soo Keong | 101,095 | 0 | 09 Jul, 2021 | |
| Richard Nigon | 47,148 | 0 | 03 Sep, 2025 | |
| Falkenhausen Konstantin Von | 18,219 | 0 | 06 May, 2025 | |
| Sarah E. Kemp | 16,270 | 0 | 03 Sep, 2025 | |
| Nancy E. Calderon | 14,741 | 0 | 03 Sep, 2025 | |
| Cristina Lucia Duarte Pinho | 10,510 | 0 | 03 Sep, 2025 | |
| Sunggyu Lee | 3,319 | 0 | 21 Aug, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Nov, 2024 | Nancy E. Calderon | Common Stock | A | 5 | $13.29 | 7,960 | D | L |
| 01 Sep, 2025 | Sarah E. Kemp | Common Stock | A | 6,739 | $0.00 | 16,270 | D | A |
| 01 Sep, 2025 | Cristina Lucia Duarte Pinho | Common Stock | A | 6,739 | $0.00 | 10,510 | D | A |
| 01 Sep, 2025 | Richard Nigon | Common Stock | A | 8,086 | $0.00 | 47,148 | D | A |
| 01 Sep, 2025 | Matthew C Wolsfeld | Stock Option (right to buy) | A | 32,559 | $0.00 | 32,559 | D | A |
| 01 Sep, 2025 | Falkenhausen Konstantin Von | Stock Option (right to buy) | A | 16,287 | $0.00 | 16,287 | D | A |
| 13 Nov, 2024 | Nancy E. Calderon | Common Stock | A | 11 | $13.29 | 7,971 | D | L |
| 01 Sep, 2025 | Sunggyu Lee | Stock Option (right to buy) | A | 16,287 | $0.00 | 16,287 | D | A |
| 01 Sep, 2025 | Ramani Narayan | Stock Option (right to buy) | A | 16,287 | $0.00 | 16,287 | D | A |
| 01 Sep, 2025 | G Patrick Lynch | Stock Option (right to buy) | A | 44,051 | $0.00 | 44,051 | D | A |
| 12 Feb, 2025 | Nancy E. Calderon | Common Stock | A | 6 | $11.26 | 7,978 | D | L |
| 12 Feb, 2025 | Nancy E. Calderon | Common Stock | A | 13 | $11.26 | 7,991 | D | L |
| 14 May, 2025 | Nancy E. Calderon | Common Stock | A | 3 | $7.35 | 7,994 | D | L |
| 14 May, 2025 | Nancy E. Calderon | Common Stock | A | 3 | $7.35 | 7,997 | D | L |
| 13 Aug, 2025 | Nancy E. Calderon | Common Stock | A | 3 | $7.72 | 8,000 | D | L |
| 13 Aug, 2025 | Nancy E. Calderon | Common Stock | A | 3 | $7.72 | 8,002 | D | L |
| 01 Sep, 2025 | Nancy E. Calderon | Common Stock | A | 6,739 | $0.00 | 14,741 | D | A |
| 24 Jul, 2025 | Richard Nigon | Common Stock | A | 12,000 | $7.43 | 49,935 | D | M |
| 24 Jul, 2025 | Richard Nigon | Common Stock | D | 10,873 | $8.20 | 39,062 | D | F |
| 24 Jul, 2025 | Richard Nigon | Stock Option (right to buy) | D | 12,000 | $0.00 | 0 | D | M |