INTEGRATED SILICON SOLUTION

CUSIP: 45812P107 Class: COM

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q3 2014
Shares 10,364 Value ($000) $142 Avg Close — Range —
Q2 2014
Shares 10,364 Value ($000) $153 Avg Close — Range —
Q1 2014
Shares 11,293 Value ($000) $176 Avg Close — Range —
Q4 2013
Shares 11,524 Value ($000) $139 Avg Close — Range —
Q3 2013
Shares 11,737 Value ($000) $128 Avg Close — Range —
Q2 2013
Shares 12,488 Value ($000) $137 Avg Close — Range —