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Tower Research Capital LLC (TRC)
> PMD
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | PSYCHEMEDICS CORP | PMD | 876 | 428 | 3,995,000 | 3,992,000 | $4,560.50 |
| 03/31/2023 | PSYCHEMEDICS CORP | PMD | 448 | 448 | 3,000 | 3,000 | $6.70 |
| 09/30/2022 | PSYCHEMEDICS CORP | PMD | 0 | -1,185 | 0 | -7,000 | |
| 06/30/2022 | PSYCHEMEDICS CORP | PMD | 1,185 | -385 | 7,000 | -4,000 | $5.91 |
| 03/31/2022 | PSYCHEMEDICS CORP | PMD | 1,570 | 981 | 11,000 | 7,000 | $7.01 |
| 12/31/2021 | PSYCHEMEDICS CORP | PMD | 589 | 589 | 4,000 | 4,000 | $6.79 |
| 09/30/2021 | PSYCHEMEDICS CORP | PMD | 0 | -390 | 0 | -3,000 | |
| 06/30/2021 | PSYCHEMEDICS CORP | PMD | 390 | -722 | 3,000 | -2,000 | $7.69 |
| 12/31/2020 | PSYCHEMEDICS CORP | PMD | 1,112 | -158 | 5,000 | -1,000 | $4.50 |
| 09/30/2020 | PSYCHEMEDICS CORP | PMD | 1,270 | 1,190 | 6,000 | 5,556 | $4.72 |
| 06/30/2020 | PSYCHEMEDICS CORP | PMD | 80 | -168 | 444 | -1,556 | $5.55 |
| 03/31/2020 | PSYCHEMEDICS CORP | PMD | 248 | -174 | 2,000 | -2,000 | $8.06 |
| 12/31/2019 | PSYCHEMEDICS CORP | PMD | 422 | 149 | 4,000 | 2,000 | $9.48 |
| 09/30/2019 | PSYCHEMEDICS CORP | PMD | 273 | -1,270 | 2,000 | -14,000 | $7.33 |
| 06/30/2019 | PSYCHEMEDICS CORP | PMD | 1,543 | 1,298 | 16,000 | 13,000 | $10.37 |
| 03/31/2019 | PSYCHEMEDICS CORP | PMD | 245 | -44 | 3,000 | -2,000 | $12.24 |
| 12/31/2018 | PSYCHEMEDICS CORP | PMD | 289 | -176 | 5,000 | -4,000 | $17.30 |
| 09/30/2018 | PSYCHEMEDICS CORP | PMD | 465 | -4,279 | 9,000 | -82,000 | $19.35 |
| 06/30/2018 | PSYCHEMEDICS CORP | PMD | 4,744 | 4,012 | 91,000 | 75,000 | $19.18 |
| 03/31/2018 | PSYCHEMEDICS CORP | PMD | 732 | 732 | 16,000 | 16,000 | $21.86 |
| 12/31/2017 | PSYCHEMEDICS CORP | PMD | 0 | -4,238 | 0 | -78,000 | |
| 09/30/2017 | PSYCHEMEDICS CORP | PMD | 4,238 | 4,238 | 78,000 | 78,000 | $18.40 |
| 12/31/2016 | PSYCHEMEDICS CORP | PMD | 0 | -2,299 | 0 | -46,000 | |
| 09/30/2016 | PSYCHEMEDICS CORP | PMD | 2,299 | 1,507 | 46,000 | 35,000 | $20.01 |
| 06/30/2016 | PSYCHEMEDICS CORP | PMD | 792 | -698 | 11,000 | -9,000 | $13.89 |
| 03/31/2016 | PSYCHEMEDICS CORP | PMD | 472 | -1,018 | 6,000 | -14,000 | $12.71 |
| 12/31/2015 | PSYCHEMEDICS CORP | PMD | 70 | -23 | 1,000 | 0 | $14.29 |
| 09/30/2015 | PSYCHEMEDICS CORP | PMD | 93 | -895 | 1,000 | -14,000 | $10.75 |
| 06/30/2015 | PSYCHEMEDICS CORP | PMD | 988 | 988 | 15,000 | 15,000 | $15.18 |
| 03/31/2015 | PSYCHEMEDICS CORP | PMD | 0 | -329 | 0 | -5,000 | |
| 12/31/2014 | PSYCHEMEDICS CORP | PMD | 329 | 329 | 5,000 | 5,000 | $15.20 |
| 09/30/2014 | PSYCHEMEDICS CORP | PMD | 0 | -300 | 0 | -4,000 | |
| 06/30/2014 | PSYCHEMEDICS CORP | PMD | 300 | -579 | 4,000 | -11,000 | $13.33 |
| 03/31/2014 | PSYCHEMEDICS CORP | PMD | 879 | -521 | 15,000 | -6,000 | $17.06 |
| 12/31/2013 | PSYCHEMEDICS CORP | PMD | 1,400 | -90 | 21,000 | 1,000 | $15.00 |
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