X0303 4 2008-09-19 0000792013 HARLEYSVILLE GROUP INC HGIC 0001036835 CUMMINS MARK R 355 MAPLE AVENUE HARLEYSVILLE PA 19438 0 1 0 0 Exec VP, CIO, Treas Common Stock 2008-09-19 4 M 0 14038 16.3125 A 46452 D Common Stock 2008-09-19 4 S 0 14038 42.347 D 32415 D Employee Stock Option (right to buy) 16.3125 2000-05-17 4 M 0 14038 0 D 2010-05-17 Common Stock 14038 0 D The shares were sold pursuant to a 10b5-1 sales plan dated 5/22/2008. The total includes .745 shares acquired through 6/30/2008 in the HGI dividend reinvestment plan. The option vested in 2 equal annual installments beginning 5/17/2001. Mark R. Cummins 2008-09-23