PSYCHEMEDICS CORP

CUSIP: 744375205 Class: COM NEW

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

Note: Option positions (PUT/CALL) are excluded.

Q3 2021
Shares 13,500 Value ($000) $113 Avg Close — Range —
Q2 2021
Shares 14,000 Value ($000) $97 Avg Close — Range —
Q1 2021
Shares 15,500 Value ($000) $96 Avg Close — Range —
Q4 2020
Shares 24,500 Value ($000) $125 Avg Close — Range —
Q3 2020
Shares 28,150 Value ($000) $124 Avg Close — Range —
Q2 2020
Shares 41,650 Value ($000) $231 Avg Close — Range —
Q1 2020
Shares 60,150 Value ($000) $364 Avg Close — Range —
Q4 2019
Shares 71,200 Value ($000) $651 Avg Close — Range —
Q3 2019
Shares 72,700 Value ($000) $662 Avg Close — Range —
Q2 2019
Shares 82,132 Value ($000) $1,165 Avg Close — Range —
Q1 2019
Shares 93,633 Value ($000) $1,329 Avg Close — Range —
Q4 2018
Shares 106,233 Value ($000) $1,686 Avg Close — Range —
Q3 2018
Shares 106,733 Value ($000) $2,008 Avg Close — Range —
Q2 2018
Shares 109,883 Value ($000) $2,114 Avg Close — Range —
Q1 2018
Shares 115,883 Value ($000) $2,475 Avg Close — Range —
Q4 2017
Shares 116,390 Value ($000) $2,393 Avg Close — Range —
Q3 2017
Shares 127,462 Value ($000) $2,349 Avg Close — Range —
Q2 2017
Shares 127,462 Value ($000) $3,180 Avg Close — Range —
Q1 2017
Shares 119,972 Value ($000) $2,549 Avg Close — Range —