X0304 5 2011-12-31 0 0 0 0000842517 ISABELLA BANK CORP ISBA 0001296594 Manifold W Joseph 1108 WENDROW WAY MT. PLEASANT MI 48858 1 0 0 0 common 2011-03-31 5 J 0 6.1877 17.90 A 589.1381 D common 2011-06-27 5 J 0 6.2888 17.80 A 595.4269 D common 2011-09-28 5 J 0 6.0336 18.75 A 601.4605 D common 2011-12-30 5 J 0 5.1089 22.67 A 606.5693 D Dividend reinvestment earnings W. Joseph Manifold 2012-02-09