POWER INTEGRATIONS I

CUSIP: 73927610 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q3 2016
Shares 148,730 Value ($000) $9,374 Avg Close — Range —
Q2 2016
Shares 55,601 Value ($000) $2,784 Avg Close — Range —
Q1 2016
Shares 55,699 Value ($000) $2,766 Avg Close — Range —
Q4 2015
Shares 34,851 Value ($000) $1,695 Avg Close — Range —
Q4 2013
Shares 10,496 Value ($000) $586 Avg Close — Range —