OM GROUP INC

CUSIP: 670872100 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q2 2014
Shares 39,425 Value ($000) $1,278 Avg Close — Range —
Q1 2014
Shares 61,721 Value ($000) $2,051 Avg Close — Range —
Q4 2013
Shares 47,221 Value ($000) $1,720 Avg Close — Range —
Q3 2013
Shares 16,021 Value ($000) $541 Avg Close — Range —
Q2 2013
Shares 16,021 Value ($000) $496 Avg Close — Range —