OM GROUP INC

CUSIP: 670872100 Class: COM

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q3 2015
Shares 5,850 Value ($000) $192 Avg Close — Range —
Q2 2015
Shares 5,760 Value ($000) $194 Avg Close — Range —
Q1 2015
Shares 5,800 Value ($000) $174 Avg Close — Range —
Q4 2014
Shares 8,200 Value ($000) $244 Avg Close — Range —
Q3 2014
Shares 8,200 Value ($000) $213 Avg Close — Range —
Q2 2014
Shares 7,700 Value ($000) $250 Avg Close — Range —
Q1 2014
Shares 7,700 Value ($000) $256 Avg Close — Range —