WALGREEN CO

CUSIP: 931422109 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q3 2014
Shares 893,477 Value ($000) $52,956 Avg Close — Range —
Q2 2014
Shares 881,843 Value ($000) $65,371 Avg Close — Range —
Q1 2014
Shares 749,843 Value ($000) $49,512 Avg Close — Range —
Q4 2013
Shares 1,325,373 Value ($000) $76,129 Avg Close — Range —
Q3 2013
Shares 1,002,943 Value ($000) $53,958 Avg Close — Range —
Q2 2013
Shares 1,235,153 Value ($000) $54,594 Avg Close — Range —