OM GROUP INC

CUSIP: 670872100 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2015
Shares 18,590 Value ($000) $611 Avg Close — Range —
Q2 2015
Shares 366 Value ($000) $12 Avg Close — Range —
Q1 2015
Shares 49 Value ($000) $1 Avg Close — Range —
Q4 2014
Shares 2,361 Value ($000) $70 Avg Close — Range —