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BlackRock Inc.
> PMD
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | PSYCHEMEDICS CORP | PMD | 77,780 | -399 | 354,676,000 | -55,764,000 | $4,559.99 |
| 03/31/2023 | PSYCHEMEDICS CORP | PMD | 78,179 | -8,256 | 410,440,000 | 409,883,000 | $5,250.00 |
| 09/30/2022 | PSYCHEMEDICS CORP | PMD | 86,435 | -572 | 557,000 | 5,000 | $6.44 |
| 06/30/2022 | PSYCHEMEDICS CORP | PMD | 87,007 | -1,409 | 552,000 | -57,000 | $6.34 |
| 03/31/2022 | PSYCHEMEDICS CORP | PMD | 88,416 | -2,176 | 609,000 | -28,000 | $6.89 |
| 12/31/2021 | PSYCHEMEDICS CORP | PMD | 90,592 | 976 | 637,000 | -115,000 | $7.03 |
| 09/30/2021 | PSYCHEMEDICS CORP | PMD | 89,616 | 3 | 752,000 | 127,000 | $8.39 |
| 06/30/2021 | PSYCHEMEDICS CORP | PMD | 89,613 | -13,179 | 625,000 | -12,000 | $6.97 |
| 03/31/2021 | PSYCHEMEDICS CORP | PMD | 102,792 | 1,467 | 637,000 | 121,000 | $6.20 |
| 12/31/2020 | PSYCHEMEDICS CORP | PMD | 101,325 | -1,033 | 516,000 | 65,000 | $5.09 |
| 09/30/2020 | PSYCHEMEDICS CORP | PMD | 102,358 | -2,359 | 451,000 | -130,000 | $4.41 |
| 06/30/2020 | PSYCHEMEDICS CORP | PMD | 104,717 | 4,265 | 581,000 | -27,000 | $5.55 |
| 03/31/2020 | PSYCHEMEDICS CORP | PMD | 100,452 | -51 | 608,000 | -312,000 | $6.05 |
| 12/31/2019 | PSYCHEMEDICS CORP | PMD | 100,503 | -1,225 | 920,000 | -7,000 | $9.15 |
| 09/30/2019 | PSYCHEMEDICS CORP | PMD | 101,728 | -346 | 927,000 | 925,970 | $9.11 |
| 06/30/2019 | PSYCHEMEDICS CORP | PMD | 102,074 | 71,619 | 1,030 | -425,970 | $0.01 |
| 03/31/2019 | PSYCHEMEDICS CORP | PMD | 30,455 | 62 | 427,000 | -55,000 | $14.02 |
| 12/31/2018 | PSYCHEMEDICS CORP | PMD | 30,393 | 301 | 482,000 | -83,000 | $15.86 |
| 09/30/2018 | PSYCHEMEDICS CORP | PMD | 30,092 | 742 | 565,000 | 0 | $18.78 |
| 06/30/2018 | PSYCHEMEDICS CORP | PMD | 29,350 | 329 | 565,000 | -54,000 | $19.25 |
| 03/31/2018 | PSYCHEMEDICS CORP | PMD | 29,021 | -1,507 | 619,000 | -8,000 | $21.33 |
| 12/31/2017 | PSYCHEMEDICS CORP | PMD | 30,528 | 400 | 627,000 | 73,000 | $20.54 |
| 09/30/2017 | PSYCHEMEDICS CORP | PMD | 30,128 | 1,968 | 554,000 | -10,000 | $18.39 |
| 03/31/2017 | PSYCHEMEDICS CORP | PMD | 28,160 | 28,160 | 564,000 | 564,000 | $20.03 |
| 06/29/2006 | PSYCHEMEDICS CORP | PMD | 0 | -125 | 0 | -2,000 | |
| 03/30/2006 | PSYCHEMEDICS CORP | PMD | 125 | 125 | 2,000 | 2,000 | $16.00 |
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