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North Star Investment Management Corp.
> PMD
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2022 | PSYCHEMEDICS CORP | PMD | 125 | 0 | 1,000 | 0 | $8.00 |
| 06/30/2022 | PSYCHEMEDICS CORP | PMD | 125 | 0 | 1,000 | 0 | $8.00 |
| 03/31/2022 | PSYCHEMEDICS CORP | PMD | 125 | -875 | 1,000 | -6,000 | $8.00 |
| 12/31/2021 | PSYCHEMEDICS CORP | PMD | 1,000 | 0 | 7,000 | -1,000 | $7.00 |
| 09/30/2021 | PSYCHEMEDICS CORP | PMD | 1,000 | 0 | 8,000 | 3,000 | $8.00 |
| 06/30/2021 | PSYCHEMEDICS CORP | PMD | 1,000 | 0 | 7,000 | 2,000 | $7.00 |
| 12/31/2020 | PSYCHEMEDICS CORP | PMD | 1,000 | -54,850 | 5,000 | -241,000 | $5.00 |
| 09/30/2020 | PSYCHEMEDICS CORP | PMD | 55,850 | -825 | 246,000 | -68,000 | $4.40 |
| 06/30/2020 | PSYCHEMEDICS CORP | PMD | 56,675 | -1,800 | 314,000 | -40,000 | $5.54 |
| 03/31/2020 | PSYCHEMEDICS CORP | PMD | 58,475 | -1,225 | 354,000 | -192,000 | $6.05 |
| 12/31/2019 | PSYCHEMEDICS CORP | PMD | 59,700 | -20,419 | 546,000 | -184,000 | $9.15 |
| 09/30/2019 | PSYCHEMEDICS CORP | PMD | 80,119 | -4,837 | 730,000 | -127,000 | $9.11 |
| 06/30/2019 | PSYCHEMEDICS CORP | PMD | 84,956 | 8 | 857,000 | -335,000 | $10.09 |
| 03/31/2019 | PSYCHEMEDICS CORP | PMD | 84,948 | -334 | 1,192,000 | -161,000 | $14.03 |
| 12/31/2018 | PSYCHEMEDICS CORP | PMD | 85,282 | 4,005 | 1,353,000 | -176,000 | $15.87 |
| 09/30/2018 | PSYCHEMEDICS CORP | PMD | 81,277 | 4,654 | 1,529,000 | 55,000 | $18.81 |
| 06/30/2018 | PSYCHEMEDICS CORP | PMD | 76,623 | -4,571 | 1,474,000 | -260,000 | $19.24 |
| 03/31/2018 | PSYCHEMEDICS CORP | PMD | 81,194 | 44 | 1,734,000 | 66,000 | $21.36 |
| 12/31/2017 | PSYCHEMEDICS CORP | PMD | 81,150 | 2,879 | 1,668,000 | 225,000 | $20.55 |
| 09/30/2017 | PSYCHEMEDICS CORP | PMD | 78,271 | 1,186 | 1,443,000 | -480,000 | $18.44 |
| 06/30/2017 | PSYCHEMEDICS CORP | PMD | 77,085 | 6,053 | 1,923,000 | 499,000 | $24.95 |
| 03/31/2017 | PSYCHEMEDICS CORP | PMD | 71,032 | -947 | 1,424,000 | -352,000 | $20.05 |
| 12/31/2016 | PSYCHEMEDICS CORP | PMD | 71,979 | -40,223 | 1,776,000 | -448,000 | $24.67 |
| 09/30/2016 | PSYCHEMEDICS CORP | PMD | 112,202 | -101,847 | 2,224,000 | -717,000 | $19.82 |
| 06/30/2016 | PSYCHEMEDICS CORP | PMD | 214,049 | 2,679 | 2,941,000 | 35,000 | $13.74 |
| 03/31/2016 | PSYCHEMEDICS CORP | PMD | 211,370 | 122,920 | 2,906,000 | 1,734,000 | $13.75 |
| 12/31/2015 | PSYCHEMEDICS CORP | PMD | 209,395 | 120,945 | 2,123,000 | 951,000 | $10.14 |
| 09/30/2015 | PSYCHEMEDICS CORP | PMD | 195,320 | 106,870 | 1,963,000 | 791,000 | $10.05 |
| 06/30/2015 | PSYCHEMEDICS CORP | PMD | 112,950 | 24,500 | 1,675,000 | 503,000 | $14.83 |
| 03/31/2015 | PSYCHEMEDICS CORP | PMD | 112,700 | 24,250 | 1,870,000 | 698,000 | $16.59 |
| 12/31/2014 | PSYCHEMEDICS CORP | PMD | 107,200 | 18,750 | 1,624,000 | 452,000 | $15.15 |
| 09/30/2014 | PSYCHEMEDICS CORP | PMD | 106,475 | 18,025 | 1,508,000 | 336,000 | $14.16 |
| 06/30/2014 | PSYCHEMEDICS CORP | PMD | 97,650 | 1,700 | 1,383,000 | -261,000 | $14.16 |
| 03/31/2014 | PSYCHEMEDICS CORP | PMD | 95,950 | 7,500 | 1,644,000 | 472,000 | $17.13 |
| 12/31/2013 | PSYCHEMEDICS CORP | PMD | 89,150 | 700 | 1,310,000 | 138,000 | $14.69 |
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