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PERRITT CAPITAL MANAGEMENT INC
> NTIC
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 266,129 | -800 | 2,850,242,000 | -357,976,000 | $10,710.00 |
| 03/31/2023 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 266,929 | -200 | 3,208,218,000 | -347,269,000 | $12,018.99 |
| 12/31/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 267,129 | -200 | 3,555,487,000 | 3,551,929,000 | $13,310.00 |
| 09/30/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 267,329 | 0 | 3,558,000 | 1,058,000 | $13.31 |
| 06/30/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 267,329 | 0 | 2,500,000 | -713,000 | $9.35 |
| 03/31/2022 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 267,329 | -9,238 | 3,213,000 | -1,018,000 | $12.02 |
| 12/31/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 276,567 | -5,828 | 4,231,000 | -63,000 | $15.30 |
| 09/30/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 282,395 | -6,675 | 4,294,000 | -710,000 | $15.21 |
| 06/30/2021 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 289,070 | -32,170 | 5,004,000 | 1,612,000 | $17.31 |
| 12/31/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 321,240 | -3,000 | 3,392,000 | 701,000 | $10.56 |
| 09/30/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 324,240 | -23,476 | 2,691,000 | -84,000 | $8.30 |
| 06/30/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 347,716 | -40,914 | 2,775,000 | -101,000 | $7.98 |
| 03/31/2020 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 388,630 | -53,657 | 2,876,000 | -3,343,000 | $7.40 |
| 12/31/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 442,287 | -33,111 | 6,218,555 | 377,555 | $14.06 |
| 09/30/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 475,398 | 220,908 | 5,841,000 | -967,000 | $12.29 |
| 06/30/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 246,899 | -7,591 | 6,037,000 | -771,000 | $24.45 |
| 03/31/2019 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 254,490 | -8,000 | 6,808,000 | -959,000 | $26.75 |
| 12/31/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,490 | 300 | 7,767,079 | -1,330,921 | $29.59 |
| 09/30/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,190 | 0 | 9,098,000 | -288,000 | $34.70 |
| 06/30/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,190 | 0 | 9,386,000 | 1,258,000 | $35.80 |
| 03/31/2018 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,190 | -25 | 8,128,000 | 1,638,000 | $31.00 |
| 12/31/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,215 | -800 | 6,489,821 | 2,123,821 | $24.75 |
| 09/30/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 263,015 | 0 | 4,366,000 | 263,000 | $16.60 |
| 06/30/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 263,015 | -600 | 4,103,000 | -707,000 | $15.60 |
| 03/31/2017 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 263,615 | 4,115 | 4,810,000 | 1,242,000 | $18.25 |
| 12/31/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 259,500 | -1,100 | 3,568,000 | 284,000 | $13.75 |
| 09/30/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 260,600 | 3,100 | 3,284,000 | 441,000 | $12.60 |
| 06/30/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 257,500 | -4,800 | 2,843,000 | -470,000 | $11.04 |
| 03/31/2016 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 262,300 | 17,000 | 3,313,000 | -509,000 | $12.63 |
| 12/31/2015 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 259,800 | 14,500 | 3,603,000 | -219,000 | $13.87 |
| 09/30/2015 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 245,300 | 0 | 3,822,000 | -127,000 | $15.58 |
| 06/30/2015 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 245,300 | -200 | 3,949,000 | -716,000 | $16.10 |
| 03/31/2015 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 245,500 | -300 | 4,665,000 | -580,000 | $19.00 |
| 12/31/2014 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 245,800 | 1,200 | 5,245,000 | 35,000 | $21.34 |
| 09/30/2014 | NORTHERN TECHNOLOGIES INTERNATIONAL CORP | NTIC | 244,600 | -8,600 | 5,210,000 | -122,000 | $21.30 |
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