X0303 4 2011-02-28 0 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001198960 ZURAITIS MARITA THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN STREET WORCESTER MA 01653 0 1 0 0 Executive Vice President Common Stock 2011-02-28 4 A 0 1835 A 35822 I Deferral Agreement Common Stock 2011-02-28 4 A 0 4230 A 45289 D Common Stock 2011-02-28 4 F 0 1344 46.47 D 43945 D Common Stock 2011-02-28 4 A 0 6250 A 50195 D Common Stock (right to buy) 46.47 2011-02-28 4 A 0 45000 0 A 2021-02-28 Common Stock 45000 45000 D On February 25, 2008, Reporting Person was granted 11,230 (target) performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2006 Long-Term Incentive Plan. On February 28, 2011, the Compensation Committee determined that the level of performance achieved entitled holders of the PBRSUs to 54% of their target award. Accordingly, on such date, the PBRSUs vested and Reporting Person was entitled to 6,065 shares of Common Stock. Of those shares 4,230 were issued and 1,835 were deferred pursuant to a deferral agreement. Grant of Restricted Stock Units pursuant to Issuer's 2006 Long-Term Incentive Plan. 50% vest on the third anniversary of the grant date and 50% vest on the 4th anniversary of the grant date. Walter H. Stowell pursuant to Confirming Statement 2011-03-02