WISCONSIN ENERGY CORP

CUSIP: 976657106 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2015
Shares 1,959,649 Value ($000) $97,003 Avg Close — Range —
Q4 2014
Shares 1,960,109 Value ($000) $103,376 Avg Close — Range —
Q3 2014
Shares 1,835,686 Value ($000) $78,934 Avg Close — Range —
Q2 2014
Shares 1,825,002 Value ($000) $85,628 Avg Close — Range —
Q1 2014
Shares 2,520,585 Value ($000) $117,333 Avg Close — Range —
Q4 2013
Shares 2,757,397 Value ($000) $113,991 Avg Close — Range —
Q3 2013
Shares 2,893,160 Value ($000) $116,825 Avg Close — Range —
Q2 2013
Shares 2,889,021 Value ($000) $118,421 Avg Close — Range —