OM GROUP INC

CUSIP: 670872100 Class: COM

Employees Retirement System of Texas's Holding History (CIK: 0001398739)

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

Q2 2015
Shares 56,000 Value ($000) $1,882 Avg Close — Range —
Q1 2015
Shares 56,000 Value ($000) $1,682 Avg Close — Range —
Q4 2014
Shares 56,000 Value ($000) $1,669 Avg Close — Range —
Q3 2014
Shares 96,000 Value ($000) $2,491 Avg Close — Range —
Q2 2014
Shares 96,000 Value ($000) $3,113 Avg Close — Range —
Q1 2014
Shares 96,000 Value ($000) $3,189 Avg Close — Range —
Q4 2013
Shares 96,000 Value ($000) $3,495 Avg Close — Range —
Q3 2013
Shares 96,000 Value ($000) $3,243 Avg Close — Range —
Q2 2013
Shares 96,000 Value ($000) $2,968 Avg Close — Range —