PSYCHEMEDICS CORP

CUSIP: 744375205 Class: COM NEW

Ativo Capital Management LLC's Holding History (CIK: 0001423065)

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

Q3 2017
Shares 46,327 Value ($000) $854 Avg Close — Range —
Q2 2017
Shares 57,015 Value ($000) $1,423 Avg Close — Range —