OM GROUP INC

CUSIP: 670872100 Class: COM

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q3 2015
Shares 3,312 Value ($000) $109 Avg Close — Range —
Q2 2015
Shares 100 Value ($000) $3 Avg Close — Range —
Q1 2015
Shares 2,211 Value ($000) $66 Avg Close — Range —
Q3 2014
Shares 2,212 Value ($000) $57 Avg Close — Range —
Q1 2014
Shares 4,186 Value ($000) $139 Avg Close — Range —
Q3 2013
Shares 1,751 Value ($000) $59 Avg Close — Range —