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v3.25.1

Capital Ratios and Shareholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2025
Equity [Abstract] |
Summary of compliance with regulatory capital requirements | The following tables set forth these requirements and our ratios as of:
| March 31, 2025
| Actual |  | Minimum Capital Required Plus Capital Conservation Buffer |  | Minimum Capital Required To Be Considered Well Capitalized (1)
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | $ | 176,720 |  |  | 12.08 | % |  | $ | 102,391 |  |  | 7.00 | % |  | $ | 95,077 |  |  | 6.50 | %
Consolidated | 184,713 |  |  | 12.58 | % |  | 102,748 |  |  | 7.00 | % |  | N/A |  | N/A
Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 176,720 |  |  | 12.08 | % |  | 124,331 |  |  | 8.50 | % |  | 117,018 |  |  | 8.00 | %
Consolidated | 184,713 |  |  | 12.58 | % |  | 124,765 |  |  | 8.50 | % |  | N/A |  | N/A
Total capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 190,072 |  |  | 12.99 | % |  | 153,586 |  |  | 10.50 | % |  | 146,272 |  |  | 10.00 | %
Consolidated | 227,512 |  |  | 15.50 | % |  | 154,121 |  |  | 10.50 | % |  | N/A |  | N/A
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 176,720 |  |  | 8.59 | % |  | 82,267 |  |  | 4.00 | % |  | 102,834 |  |  | 5.00 | %
Consolidated | 184,713 |  |  | 8.96 | % |  | 82,465 |  |  | 4.00 | % |  | N/A |  | N/A
| December 31, 2024
| Actual |  | Minimum Capital Required Plus Capital Conservation Buffer |  | Minimum Capital Required To Be Considered Well Capitalized (1)
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | $ | 172,589 |  |  | 11.53 | % |  | $ | 104,783 |  |  | 7.00 | % |  | $ | 97,299 |  |  | 6.50 | %
Consolidated | 183,348 |  |  | 12.21 | % |  | 105,136 |  |  | 7.00 | % |  | N/A |  | N/A
Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 172,589 |  |  | 11.53 | % |  | 127,237 |  |  | 8.50 | % |  | 119,753 |  |  | 8.00 | %
Consolidated | 183,348 |  |  | 12.21 | % |  | 127,665 |  |  | 8.50 | % |  | N/A |  | N/A
Total capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 185,997 |  |  | 12.43 | % |  | 157,175 |  |  | 10.50 | % |  | 149,691 |  |  | 10.00 | %
Consolidated | 226,179 |  |  | 15.06 | % |  | 157,703 |  |  | 10.50 | % |  | N/A |  | N/A
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 172,589 |  |  | 8.36 | % |  | 82,602 |  |  | 4.00 | % |  | 103,252 |  |  | 5.00 | %
Consolidated | 183,348 |  |  | 8.86 | % |  | 82,803 |  |  | 4.00 | % |  | N/A |  | N/A
(1) "Well-capitalized" minimum Common Equity Tier 1 to Risk-Weighted and Leverage Ratio are not formally defined under applicable regulations for bank holding companies.
Summary of the components of accumulated other comprehensive income | The following table summarizes the changes in AOCI by component for the:
| Three Months Ended March 31
| 2025 |  | 2024
| Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total
Balance, December 31 | $ | (20,958) |  |  | $ | (397) |  |  | $ | (21,355) |  |  | $ | (25,199) |  |  | $ | (697) |  |  | $ | (25,896) |
OCI before reclassifications | 5,014 |  |  | — |  |  | 5,014 |  |  | (2,926) |  |  | — |  |  | (2,926) |
Amounts reclassified from AOCI | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Subtotal | 5,014 |  |  | — |  |  | 5,014 |  |  | (2,926) |  |  | — |  |  | (2,926) |
Tax effect | (1,098) |  |  | — |  |  | (1,098) |  |  | 632 |  |  | — |  |  | 632 |
OCI, net of tax | 3,916 |  |  | — |  |  | 3,916 |  |  | (2,294) |  |  | — |  |  | (2,294) |
Balance, March 31 | $ | (17,042) |  |  | $ | (397) |  |  | $ | (17,439) |  |  | $ | (27,493) |  |  | $ | (697) |  |  | $ | (28,190) |
A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended March 31
| 2025 |  | 2024
| Auction Rate Money Market Preferred |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | (215) |  |  | $ | 5,229 |  |  | $ | 5,014 |  |  | $ | 82 |  |  | $ | (3,008) |  |  | $ | (2,926) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | (215) |  |  | 5,229 |  |  | 5,014 |  |  | 82 |  |  | (3,008) |  |  | (2,926) |
Tax effect | — |  |  | (1,098) |  |  | (1,098) |  |  | — |  |  | 632 |  |  | 632 |
Unrealized gains (losses), net of tax | $ | (215) |  |  | $ | 4,131 |  |  | $ | 3,916 |  |  | $ | 82 |  |  | $ | (2,376) |  |  | $ | (2,294) |

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