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RUTABAGA CAPITAL MANAGEMENT LLC
> NTIC
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 387,416 | 65,817 | 5,157,000 | 2,150,000 | $13.31 |
| 06/30/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 321,599 | 600 | 3,007,000 | -851,000 | $9.35 |
| 03/31/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 320,999 | 0 | 3,858,000 | -1,053,000 | $12.02 |
| 12/31/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 320,999 | -6,619 | 4,911,000 | -69,000 | $15.30 |
| 09/30/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 327,618 | -14,313 | 4,980,000 | -935,000 | $15.20 |
| 06/30/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 0 | 5,915,000 | 718,000 | $17.30 |
| 03/31/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 0 | 5,197,000 | 1,586,000 | $15.20 |
| 12/31/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 0 | 3,611,000 | 773,000 | $10.56 |
| 09/30/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 0 | 2,838,000 | 109,000 | $8.30 |
| 06/30/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 0 | 2,729,000 | 199,000 | $7.98 |
| 03/31/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 341,931 | 13,550 | 2,530,000 | -2,087,000 | $7.40 |
| 12/31/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 328,381 | 1,500 | 4,617,000 | 608,000 | $14.06 |
| 09/30/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 326,881 | 175,911 | 4,009,000 | 318,000 | $12.26 |
| 06/30/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 150,970 | 0 | 3,691,000 | -347,000 | $24.45 |
| 03/31/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 150,970 | -6,346 | 4,038,000 | -617,000 | $26.75 |
| 12/31/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 157,316 | -3,227 | 4,655,000 | -916,000 | $29.59 |
| 09/30/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 160,543 | -28,292 | 5,571,000 | -1,189,000 | $34.70 |
| 06/30/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 188,835 | 6,684 | 6,760,000 | 2,625,000 | $35.80 |
| 03/31/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 182,151 | 2,950 | 4,135,000 | -300,000 | $22.70 |
| 12/31/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 179,201 | -32,536 | 4,435,225 | 920,225 | $24.75 |
| 09/30/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 211,737 | -55,168 | 3,515,000 | -649,000 | $16.60 |
| 06/30/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 266,905 | 266,905 | 4,164,000 | 4,164,000 | $15.60 |
| 12/31/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 0 | -283,206 | 0 | -3,568,000 | |
| 09/30/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 283,206 | 283,206 | 3,568,000 | 3,568,000 | $12.60 |
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