ENTEROMEDICS INC

CUSIP: 29365M208 Class: COM NEW

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

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

Q4 2015
Shares 11,849 Value ($000) $2 Avg Close — Range —
Q3 2015
Shares 11,849 Value ($000) $3 Avg Close — Range —
Q1 2015
Shares 3,788 Value ($000) $3 Avg Close — Range —
Q3 2014
Shares 23,284 Value ($000) $29 Avg Close — Range —
Q2 2014
Shares 4,757 Value ($000) $7 Avg Close — Range —
Q1 2014
Shares 73,756 Value ($000) $134 Avg Close — Range —
Q4 2013
Shares 124,203 Value ($000) $253 Avg Close — Range —
Q3 2013
Shares 35,804 Value ($000) $45 Avg Close — Range —
Q2 2013
Shares 26,581 Value ($000) $30 Avg Close — Range —