WHITING PETROLEUM CORP

CUSIP: 966387AK8 Class: CONVERT

Invesco Ltd.'s Holding History (CIK: 0000914208)

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

Q2 2015
Shares 30,500,000 Value ($000) $33,321 Avg Close — Range —
Q1 2015
Shares 12,500,000 Value ($000) $13,195 Avg Close — Range —