INTERNATIONAL RECTIFIER CORP

CUSIP: 460254105 Class: COMMON STOCK

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q4 2014
Shares 550,000 Value ($000) $21,945,000 Avg Close — Range —
Q3 2014
Shares 500,000 Value ($000) $19,620,000 Avg Close — Range —