X0303 4 2010-02-18 0000792013 HARLEYSVILLE GROUP INC HGIC 0001376137 Dever Donna M 355 MAPLE AVENUE HARLEYSVILLE PA 19438 0 1 0 0 Sr VP Common Stock 2010-02-18 4 A 0 830 0 A 8834 D Employee Stock Option Right-to-Buy 33.94 2010-02-18 4 A 0 8600 0 A 2020-02-18 Common Stock 8600 8600 D Performance Units 2010-02-18 4 A 0 830 0 A 2013-02-18 Common Stock 830 830 D Represents an award of time-based restricted stock units granted under the Harleysville Group Inc. Equity Incentive Plan. Each unit represents a contingent right to receive one share of HGI common stock. Total includes 75.494 shares acquired 3/30/09 through 12/30/09 from participation in the HGI dividend reinvestment plan. The option vests in 3 equal annual installments beginning 2/18/2011. Represents performance-based restricted stock unit award at target. The performance period will end 2/18/2013, and the actual number of shares to be issued will be determined after such date based upon the achievement of identified performance goals. Each unit represents the contingent right to acquire one share of common stock. Candace J. Shustack, as Power of Attorney 2010-02-22