X0303 4 2011-06-02 0 0001302707 Horizon Lines, Inc. HRZ 0001052297 MANDL ALEX 4064 COLONY ROAD SUITE 200 CHARLOTTE NC 28211 1 0 0 0 Restricted Stock Unit 2011-06-02 4 A 0 169057 0.00 A Common Stock, par value 169057 169057 D Each restricted stock unit is the economic equivalent of one share of HRZ common stock (excludes the right to receive dividends). The restricted stock units vest on June 2, 2012. The restricted stock units will be paid in cash based on the closing price of the Company's common stock on the date the director no longer serves on the Board. /s/ Robert S. Zuckerman, Attorney-in-Fact 2011-06-06