OPHTHOTECH CORP

CUSIP: 683745103 Class: COM

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

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

Q3 2016
Shares 5,427 Value ($000) $250 Avg Close — Range —
Q2 2016
Shares 5,366 Value ($000) $274 Avg Close — Range —
Q4 2015
Shares 4,104 Value ($000) $322 Avg Close — Range —
Q2 2015
Shares 4,084 Value ($000) $213 Avg Close — Range —