OM GROUP INC

CUSIP: 670872100 Class: COM

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q3 2013
Shares 42,213 Value ($000) $1,426 Avg Close — Range —
Q2 2013
Shares 42,234 Value ($000) $1,306 Avg Close — Range —