DERMA SCIENCES INC

CUSIP: 249827502 Class: COM PAR $.01

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2016
Shares 209 Value ($000) $1 Avg Close — Range —
Q4 2015
Shares 209 Value ($000) $1 Avg Close — Range —
Q3 2015
Shares 209 Value ($000) $1 Avg Close — Range —
Q3 2014
Shares 15,233 Value ($000) $127 Avg Close — Range —
Q2 2014
Shares 10,211 Value ($000) $118 Avg Close — Range —
Q3 2013
Shares 2,602 Value ($000) $32 Avg Close — Range —
Q2 2013
Shares 2,602 Value ($000) $35 Avg Close — Range —