OM GROUP INC

CUSIP: 670872100 Class: COM

NORGES BANK's Holding History (CIK: 0001374170)

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

Q3 2015
Shares 455,676 Value ($000) $14,987 Avg Close — Range —
Q2 2015
Shares 495,676 Value ($000) $16,655 Avg Close — Range —
Q1 2015
Shares 891,205 Value ($000) $26,763 Avg Close — Range —
Q4 2014
Shares 893,905 Value ($000) $26,639 Avg Close — Range —
Q3 2014
Shares 361,736 Value ($000) $9,387 Avg Close — Range —
Q2 2014
Shares 326,237 Value ($000) $10,580 Avg Close — Range —
Q1 2014
Shares 326,237 Value ($000) $10,838 Avg Close — Range —
Q4 2013
Shares 326,237 Value ($000) $11,879 Avg Close — Range —
Q3 2013
Shares 326,237 Value ($000) $11,021 Avg Close — Range —
Q2 2013
Shares 356,558 Value ($000) $11,024 Avg Close — Range —
Q1 2013
Shares 217,932 Value ($000) $5,117 Avg Close — Range —
Q3 2012
Shares 217,932 Value ($000) $4,041 Avg Close — Range —
Q2 2012
Shares 217,932 Value ($000) $3,421 Avg Close — Range —