PSYCHEMEDICS CORP

CUSIP: 744375205 Class: COM NEW

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2017
Shares 10,539 Value ($000) $217 Avg Close — Range —
Q2 2017
Shares 12,460 Value ($000) $311 Avg Close — Range —