INTERNATIONAL RECTIFIER CORP

CUSIP: 460254105 Class: COMMON STOCK

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q4 2014
Shares 474,486 Value ($000) $18,932 Avg Close — Range —
Q3 2014
Shares 490,467 Value ($000) $19,246 Avg Close — Range —
Q2 2014
Shares 496,684 Value ($000) $13,857 Avg Close — Range —
Q1 2014
Shares 503,034 Value ($000) $13,783 Avg Close — Range —
Q4 2013
Shares 516,014 Value ($000) $13,452 Avg Close — Range —
Q3 2013
Shares 524,404 Value ($000) $12,989 Avg Close — Range —
Q2 2013
Shares 538,054 Value ($000) $11,267 Avg Close — Range —