Walgreen CEO Gregory D. Wasson's total compensation slipped in fiscal 2012, as earnings sank 21 percent and a contract dispute hurt revenue for the nation's largest drugstore operator.

Wasson, 54, received compensation valued at about $12 million for the fiscal year that ended Aug. 31, according to the Deerfield company's annual proxy statement filed Monday. That represented a 1 percent drop compared to fiscal 2011.

Wasson, who became CEO in 2009, received a $1.3 million salary, which represented an 8 percent increase from the previous year. The executive also received a performance-related bonus of $1.2 million that was 57 percent smaller than the previous year. Stock and option awards totaled $8.9 million in the recently completed fiscal year.