1、Table of ContentsUNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,D.C.20549FORM 10-KANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31,2023ORTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT
2、OF 1934For the transition period from toCommission File Number:0-18415Isabella Bank Corporation(Exact name of registrant as specified in its charter)Michigan38-2830092(State or other jurisdiction ofincorporation or organization)(I.R.S.Employeridentification No.)401 North Main Street,Mount Pleasant,M
3、ichigan 48858(Address of principal executive offices)(Zip Code)Registrants telephone number,including area code(989)772-9471Securities registered pursuant to Section 12(b)of the Act:Title of each classTrading Symbol(s)Name of each exchange on which registeredNoneN/AN/ASecurities registered pursuant
4、to Section 12(g)of the Act:Common Stock-No Par Value(Title of Class)Indicated by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes NoIndicated by check mark if the registrant is not required to file reports pursuant to Section 13 or Section
5、 15(d)of the Act.Yes NoIndicate by check mark whether the registrant(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of1934 during the preceding 12 months(or for such shorter period that the registrant was required to file such reports),and(2)has bee
6、n subject tosuch filing requirements for the past 90 days.Yes NoIndicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of Regulation S-T(232.405 of this chapter)during the preceding 12 months(or for such sho