OM GROUP INC

CUSIP: 670872100 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q3 2015
Shares 70,506 Value ($000) $2,319 Avg Close — Range —
Q2 2015
Shares 70,506 Value ($000) $2,369 Avg Close — Range —
Q1 2015
Shares 76,325 Value ($000) $2,292 Avg Close — Range —
Q4 2014
Shares 76,625 Value ($000) $2,283 Avg Close — Range —
Q3 2014
Shares 76,725 Value ($000) $1,991 Avg Close — Range —
Q2 2014
Shares 76,825 Value ($000) $2,491 Avg Close — Range —
Q1 2014
Shares 77,125 Value ($000) $2,562 Avg Close — Range —
Q4 2013
Shares 78,225 Value ($000) $2,848 Avg Close — Range —
Q3 2013
Shares 79,525 Value ($000) $2,686 Avg Close — Range —
Q2 2013
Shares 81,325 Value ($000) $2,515 Avg Close — Range —