In the last 12 months, insiders at NORTHERN TECHNOLOGIES INTERNATIONAL CORP ($NTIC) filed 82 transactions with the SEC: 6 open-market purchases totaling $78,466 and 1 sales totaling $22,478. Net insider sentiment: net buying.
NORTHERN TECHNOLOGIES INTERNATIONAL CORP operates in the Coating, engraving & allied services industry (Manufacturing sector).
Most Active Insiders
- NIGON RICHARD (Director) — 13 transactions totaling $598,281
- LYNCH G PATRICK (President and CEO) — 7 transactions totaling $381,464
- von Falkenhausen Konstantin (Director) — 9 transactions totaling $227,544
- WOLSFELD MATTHEW C (CFO and Corporate Secretary) — 7 transactions totaling $140,985
- Lee Sunggyu (Director) — 6 transactions totaling $117,593
View all SEC Filings for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| May 14, 2025 | Calderon Nancy E. | Director | L | Common Stock | 3 | $7.35 | 7,996.9451 | 9,754,209 | 0.04% | 0.00% |
| May 14, 2025 | Calderon Nancy E. | Director | L | Common Stock | 3 | $7.35 | 7,993.9723 | 9,754,209 | 0.03% | 0.00% |
| Feb. 12, 2025 | Calderon Nancy E. | Director | L | Common Stock | 13 | $11.26 | 7,991.1954 | 9,754,209 | 0.17% | 0.00% |
| Feb. 12, 2025 | Calderon Nancy E. | Director | L | Common Stock | 6 | $11.26 | 7,977.6956 | 9,754,209 | 0.08% | 0.00% |
| Nov. 13, 2024 | Calderon Nancy E. | Director | L | Common Stock | 11 | $13.29 | 7,971.2623 | 9,833,450 | 0.14% | 0.00% |
| Nov. 13, 2024 | Calderon Nancy E. | Director | L | Common Stock | 5 | $13.29 | 7,959.8853 | 9,833,450 | 0.07% | 0.00% |
| Sept. 1, 2025 | Pinho Cristina Lucia Duarte | Director | A | Common Stock | 6739 | $0.00 | 10,510.0000 | 9,639,676 | 178.71% | 0.07% |
| Sept. 1, 2025 | Kemp Sarah E. | Director | A | Common Stock | 6739 | $0.00 | 16,270.3730 | 9,639,676 | 70.70% | 0.07% |
| Sept. 1, 2025 | NIGON RICHARD | Director | A | Common Stock | 8086 | $0.00 | 47,148.0000 | 9,639,676 | 20.70% | 0.08% |
| Sept. 1, 2025 | von Falkenhausen Konstantin | Director | A | Stock Option (right to buy) | 16287 | $0.00 | 16,287.0000 | 9,639,676 | 9999.99% | 0.17% |
| Sept. 1, 2025 | Lee Sunggyu | Director | A | Stock Option (right to buy) | 16287 | $0.00 | 16,287.0000 | 9,639,676 | 9999.99% | 0.17% |
| Sept. 1, 2025 | Narayan Ramani | Director | A | Stock Option (right to buy) | 16287 | $0.00 | 16,287.0000 | 9,639,676 | 9999.99% | 0.17% |
| Aug. 13, 2025 | Calderon Nancy E. | Director | L | Common Stock | 3 | $7.72 | 7,999.5928 | 9,754,209 | 0.03% | 0.00% |
| Aug. 13, 2025 | Calderon Nancy E. | Director | L | Common Stock | 3 | $7.72 | 8,002.4270 | 9,754,209 | 0.04% | 0.00% |
| Sept. 1, 2025 | Calderon Nancy E. | Director | A | Common Stock | 6739 | $0.00 | 14,741.4270 | 9,639,676 | 84.21% | 0.07% |
| Sept. 1, 2025 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | A | Stock Option (right to buy) | 32559 | $0.00 | 32,559.0000 | 9,639,676 | 9999.99% | 0.34% |
| Sept. 1, 2025 | LYNCH G PATRICK | President and CEO | A | Stock Option (right to buy) | 44051 | $0.00 | 44,051.0000 | 9,639,676 | 9999.99% | 0.46% |
| July 24, 2025 | NIGON RICHARD | Director | M | Common Stock | 12000 | $7.43 | 49,935.0000 | 9,754,209 | 31.63% | 0.12% |
| July 24, 2025 | NIGON RICHARD | Director | F | Common Stock | 10873 | $8.20 | 39,062.0000 | 9,754,209 | 21.77% | 0.11% |
| July 24, 2025 | NIGON RICHARD | Director | M | Stock Option (right to buy) | 12000 | $0.00 | 0.0000 | 9,754,209 | 100.00% | 0.12% |
| May 6, 2025 | von Falkenhausen Konstantin | Director | P | Common Stock | 1100 | $7.23 | 18,219.0000 | 9,754,209 | 6.43% | 0.01% |
| April 25, 2025 | Calderon Nancy E. | Director | P | Common Stock | 1000 | $7.45 | 7,954.4635 | 9,754,209 | 14.38% | 0.01% |
| Feb. 14, 2024 | Calderon Nancy E. | Director | L | Common Stock | 5 | $13.63 | 3,138.5362 | 0 | 0.17% | 0.00% |
| Sept. 1, 2024 | von Falkenhausen Konstantin | Director | A | Stock Option (right to buy) | 9843 | $0.00 | 9,843.0000 | 9,833,450 | 9999.99% | 0.10% |
| Sept. 1, 2024 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | A | Stock Option (right to buy) | 33156 | $0.00 | 33,156.0000 | 9,833,450 | 9999.99% | 0.34% |
| Sept. 1, 2024 | Pinho Cristina Lucia Duarte | Director | A | Common Stock | 3771 | $0.00 | 3,771.0000 | 9,833,450 | 9999.99% | 0.04% |
| Sept. 1, 2024 | Lee Sunggyu | Director | A | Stock Option (right to buy) | 9843 | $0.00 | 9,843.0000 | 9,833,450 | 9999.99% | 0.10% |
| Sept. 1, 2024 | Narayan Ramani | Director | A | Stock Option (right to buy) | 9843 | $0.00 | 9,843.0000 | 9,833,450 | 9999.99% | 0.10% |
| Nov. 16, 2023 | Calderon Nancy E. | Director | L | Common Stock | 6 | $12.01 | 3,122.1477 | 0 | 0.19% | 0.00% |
| Nov. 16, 2023 | Calderon Nancy E. | Director | L | Common Stock | 11 | $13.25 | 3,133.3279 | 0 | 0.36% | 0.00% |
| Feb. 14, 2024 | Calderon Nancy E. | Director | L | Common Stock | 11 | $13.47 | 3,149.5966 | 0 | 0.35% | 0.00% |
| May 15, 2024 | Calderon Nancy E. | Director | L | Common Stock | 4 | $18.04 | 3,153.5528 | 0 | 0.13% | 0.00% |
| May 15, 2024 | Calderon Nancy E. | Director | L | Common Stock | 13 | $11.83 | 3,166.2161 | 0 | 0.40% | 0.00% |
| Aug. 14, 2024 | Calderon Nancy E. | Director | L | Common Stock | 6 | $11.99 | 3,172.1904 | 0 | 0.19% | 0.00% |
| Aug. 14, 2024 | Calderon Nancy E. | Director | L | Common Stock | 11 | $13.34 | 3,183.4635 | 0 | 0.36% | 0.00% |
| Sept. 1, 2024 | Calderon Nancy E. | Director | A | Common Stock | 3771 | $0.00 | 6,954.4635 | 9,833,450 | 118.46% | 0.04% |
| Sept. 1, 2024 | LYNCH G PATRICK | President & CEO | A | Stock Option (right to buy) | 44858 | $0.00 | 44,858.0000 | 9,833,450 | 9999.99% | 0.46% |
| Sept. 1, 2024 | NIGON RICHARD | Director | A | Stock Option (right to buy) | 11811 | $0.00 | 11,811.0000 | 9,833,450 | 9999.99% | 0.12% |
| Sept. 1, 2024 | Kemp Sarah E. | Director | A | Common Stock | 3771 | $0.00 | 9,531.3730 | 9,833,450 | 65.46% | 0.04% |
| Aug. 26, 2024 | LYNCH G PATRICK | President and CEO | M | Common Stock | 10488 | $10.05 | 1,316,328.0000 | 0 | 0.80% | 0.00% |
| Aug. 26, 2024 | LYNCH G PATRICK | President and CEO | M | Stock Option (right to buy) | 10488 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 26, 2024 | LYNCH G PATRICK | President and CEO | F | Common Stock | 7710 | $13.67 | 1,308,618.0000 | 0 | 0.59% | 0.00% |
| Aug. 1, 2024 | NIGON RICHARD | Director | F | Common Stock | 7665 | $13.11 | 37,935.0000 | 0 | 16.81% | 0.00% |
| Aug. 1, 2024 | NIGON RICHARD | Director | M | Stock Option (right to buy) | 12000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 1, 2024 | NIGON RICHARD | Director | M | Common Stock | 12000 | $10.05 | 45,600.0000 | 0 | 35.71% | 0.00% |
| July 31, 2024 | von Falkenhausen Konstantin | Director | M | Stock Option (right to buy) | 8000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 31, 2024 | von Falkenhausen Konstantin | Director | M | Common Stock | 8000 | $10.05 | 23,200.0000 | 0 | 52.63% | 0.00% |
| July 31, 2024 | von Falkenhausen Konstantin | Director | F | Common Stock | 6081 | $13.22 | 17,119.0000 | 0 | 26.21% | 0.00% |
| July 15, 2024 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | M | Common Stock | 7752 | $10.05 | 168,149.0000 | 0 | 4.83% | 0.00% |
| July 15, 2024 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | M | Stock Option (right to buy) | 7752 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 23, 2024 | Kemp Sarah E. | Director | P | Common Stock | 1275 | $15.70 | 5,760.3730 | 0 | 28.43% | 0.00% |
| Nov. 16, 2022 | Calderon Nancy E. | Director | L | Common Stock | 11 | $12.96 | 3,072.8653 | 0 | 0.37% | 0.00% |
| Feb. 21, 2023 | Calderon Nancy E. | Director | L | Common Stock | 14 | $13.17 | 3,086.5830 | 0 | 0.45% | 0.00% |
| May 18, 2023 | Calderon Nancy E. | Director | L | Common Stock | 16 | $11.56 | 3,102.2891 | 0 | 0.51% | 0.00% |
| Aug. 17, 2023 | Calderon Nancy E. | Director | L | Common Stock | 14 | $13.07 | 3,116.2707 | 0 | 0.45% | 0.00% |
| Sept. 1, 2023 | Calderon Nancy E. | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | Kemp Sarah E. | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | NIGON RICHARD | Director | A | Stock Option (right to buy) | 11905 | $0.00 | 11,905.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | LYNCH G PATRICK | President & CEO | A | Stock Option (right to buy) | 45381 | $0.00 | 45,381.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | A | Stock Option (right to buy) | 33543 | $0.00 | 33,543.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | von Falkenhausen Konstantin | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | Narayan Ramani | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | Lee Sunggyu | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Sept. 1, 2023 | Pinho Cristina Lucia Duarte | Director | A | Stock Option (right to buy) | 9921 | $0.00 | 9,921.0000 | 0 | 9999.99% | 0.00% |
| Aug. 28, 2023 | von Falkenhausen Konstantin | Director | M | Common Stock | 8000 | $7.35 | 15,200.0000 | 0 | 111.11% | 0.00% |
| Aug. 28, 2023 | von Falkenhausen Konstantin | Director | M | Stock Option (right to buy) | 8000 | $0.00 | 8,000.0000 | 0 | 50.00% | 0.00% |
| Aug. 17, 2023 | Lee Sunggyu | Director | M | Common Stock | 8000 | $7.35 | 8,000.0000 | 0 | 9999.99% | 0.00% |
| Aug. 17, 2023 | Lee Sunggyu | Director | F | Common Stock | 4681 | $12.56 | 3,319.0000 | 0 | 58.51% | 0.00% |
| Aug. 17, 2023 | Lee Sunggyu | Director | M | Stock Option (right to buy) | 8000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 14, 2023 | Calderon Nancy E. | Director | P | Common Stock | 500 | $13.17 | 3,061.6851 | 0 | 19.52% | 0.00% |
| Aug. 8, 2023 | LYNCH G PATRICK | President and CEO | M | Common Stock | 11610 | $7.35 | 1,312,227.0000 | 0 | 0.89% | 0.00% |
| Aug. 8, 2023 | LYNCH G PATRICK | President and CEO | F | Common Stock | 6387 | $13.36 | 1,305,840.0000 | 0 | 0.49% | 0.00% |
| Aug. 8, 2023 | LYNCH G PATRICK | President and CEO | M | Stock Option (right to buy) | 11610 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 26, 2023 | NIGON RICHARD | Director | M | Common Stock | 12000 | $7.35 | 42,600.0000 | 0 | 39.22% | 0.00% |
| July 26, 2023 | NIGON RICHARD | Director | F | Common Stock | 7153 | $12.33 | 35,447.0000 | 0 | 16.79% | 0.00% |
| July 27, 2023 | NIGON RICHARD | Director | S | Common Stock | 1847 | $12.17 | 33,600.0000 | 0 | 5.21% | 0.00% |
| July 26, 2023 | NIGON RICHARD | Director | M | Stock Option (right to buy) | 12000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 11, 2023 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | M | Common Stock | 8582 | $7.35 | 160,338.0000 | 0 | 5.66% | 0.00% |
| July 11, 2023 | WOLSFELD MATTHEW C | CFO and Corporate Secretary | M | Stock Option (right to buy) | 8582 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 18, 2023 | Kemp Sarah E. | Director | P | Common Stock | 2473 | $12.13 | 4,485.3730 | 0 | 122.93% | 0.00% |
| Jan. 30, 2023 | Calderon Nancy E. | Director | P | Common Stock | 500 | $12.92 | 2,561.6851 | 0 | 24.25% | 0.00% |
| Jan. 20, 2023 | Pinho Cristina Lucia Duarte | Director | A | Stock Option (right to buy) | 5511 | $0.00 | 5,511.0000 | 0 | 9999.99% | 0.00% |