OM GROUP INC

CUSIP: 670872100 Class: COM

TWO SIGMA ADVISERS, LP's Holding History (CIK: 0001478735)

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

Q2 2015
Shares 83,292 Value ($000) $2,799 Avg Close — Range —
Q1 2015
Shares 115,292 Value ($000) $3,462 Avg Close — Range —
Q4 2014
Shares 104,392 Value ($000) $3,111 Avg Close — Range —
Q3 2014
Shares 103,392 Value ($000) $2,683 Avg Close — Range —
Q2 2014
Shares 91,492 Value ($000) $2,967 Avg Close — Range —
Q1 2014
Shares 66,292 Value ($000) $2,202 Avg Close — Range —
Q4 2013
Shares 91,792 Value ($000) $3,341 Avg Close — Range —
Q3 2013
Shares 56,792 Value ($000) $1,917 Avg Close — Range —
Q2 2013
Shares 40,892 Value ($000) $1,265 Avg Close — Range —