THRESHOLD PHARMACEUTICAL INC

CUSIP: 885807206 Class: CMN

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

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

Q1 2016
Shares 10,818 Value ($000) $5 Avg Close — Range —
Q4 2015
Shares 10,818 Value ($000) $5 Avg Close — Range —
Q3 2015
Shares 11,165 Value ($000) $45 Avg Close — Range —
Q2 2015
Shares 16,446 Value ($000) $66 Avg Close — Range —
Q1 2015
Shares 13,613 Value ($000) $55 Avg Close — Range —
Q4 2014
Shares 13,736 Value ($000) $44 Avg Close — Range —
Q3 2014
Shares 16,150 Value ($000) $58 Avg Close — Range —
Q2 2014
Shares 16,150 Value ($000) $64 Avg Close — Range —
Q1 2014
Shares 22,746 Value ($000) $108 Avg Close — Range —
Q4 2013
Shares 22,962 Value ($000) $107 Avg Close — Range —
Q3 2013
Shares 22,962 Value ($000) $107 Avg Close — Range —
Q2 2013
Shares 24,466 Value ($000) $129 Avg Close — Range —