PSYCHEMEDICS CORP

CUSIP: 744375205 Class: COM NEW

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q4 2017
Shares 14,200 Value ($000) $291 Avg Close — Range —
Q3 2017
Shares 20,800 Value ($000) $383 Avg Close — Range —
Q2 2017
Shares 24,000 Value ($000) $598 Avg Close — Range —
Q1 2017
Shares 24,000 Value ($000) $481 Avg Close — Range —
Q4 2016
Shares 12,900 Value ($000) $318 Avg Close — Range —
Q3 2016
Shares 12,900 Value ($000) $255 Avg Close — Range —