OM GROUP INC

CUSIP: 670872100 Class: COM

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q2 2015
Shares 708,722 Value ($000) $23,813 Avg Close — Range —
Q1 2015
Shares 1,421,462 Value ($000) $42,687 Avg Close — Range —
Q4 2014
Shares 1,426,289 Value ($000) $42,503 Avg Close — Range —
Q3 2014
Shares 1,437,073 Value ($000) $37,292 Avg Close — Range —
Q2 2014
Shares 1,440,429 Value ($000) $46,713 Avg Close — Range —
Q1 2014
Shares 1,463,988 Value ($000) $48,634 Avg Close — Range —
Q4 2013
Shares 926,891 Value ($000) $33,748 Avg Close — Range —
Q3 2013
Shares 721,050 Value ($000) $24,357 Avg Close — Range —
Q2 2013
Shares 500,700 Value ($000) $15,482 Avg Close — Range —