# EDGAR Filing Document

**Accession Number:** 0000842517
**File Stem:** 0000842517-26-000102
**Filing Date:** 2026-5
**Character Count:** 7035
**Document Hash:** b3a10d20f1df0f09ad5bb1dc1f297d56
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000842517-26-000102.hdr.sgml**: 20260507

**ACCESSION NUMBER**: 0000842517-26-000102

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 11

**CONFORMED PERIOD OF REPORT**: 20260505

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**FILED AS OF DATE**: 20260507

**DATE AS OF CHANGE**: 20260507

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ISABELLA BANK CORP
- **CENTRAL INDEX KEY:** 0000842517
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 382830092
- **STATE OF INCORPORATION:** MI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42639
- **FILM NUMBER:** 26952534

**BUSINESS ADDRESS:**
- **STREET 1:** 401 NORTH MAIN STREET
- **CITY:** MT PLEASANT
- **STATE:** MI
- **ZIP:** 48858
- **BUSINESS PHONE:** 9897729471

**MAIL ADDRESS:**
- **STREET 1:** 401 NORTH MAIN STREET
- **CITY:** MT PLEASANT
- **STATE:** MI
- **ZIP:** 48858

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ISABELLA BANK Corp
- **DATE OF NAME CHANGE:** 20170403

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ISABELLA BANK CORP
- **DATE OF NAME CHANGE:** 20080602

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** IBT BANCORP INC /MI/
- **DATE OF NAME CHANGE:** 19920703

?xml version='1.0' encoding='ASCII'? isba-20260505

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): May 5, 2026**

**ISABELLA BANK CORPORATION**

**(Exact name of registrant as specified in its charter)**

---

| | | |
|:---|:---|:---|
| **Michigan** | **000-18415** | **38-2830092** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission<br>File Number)** | **(IRS Employer<br>Identification No.)** |

---

---

| | | | |
|:---|:---|:---|:---|
| **401 North Main Street** | **Mt. Pleasant** | **Michigan** | **48858-1649** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Zip Code)** |

---

**Registrant's telephone number, including area code: (989) 772-9471**

**Not Applicable**

**(Former name or former address, if changed since last report.)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule l4a-12 under the Exchange Act (17 CFR 240.l4a-l2)

☐ Pre-commencement communications pursuant to Rule l4d-2(b) under the Exchange Act (17 CFR 240.l4d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.l3e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class TradingSymbol(s) Name of each exchange on which registered <br> <u>Common stock, no par value per share</u> <u>ISBA</u> <u>The Nasdaq Stock Market LLC</u>

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

 Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

------

**Item 5.07 Submission of Matters to a Vote of Security Holders**.

&nbsp;&nbsp;&nbsp;&nbsp;On May 5, 2026, Isabella Bank Corporation (the "Company") held its 2026 Annual Meeting of Shareholders. The matters listed below were submitted to a vote of the Company's shareholders through the solicitation of proxies, and the proposals are described in the Company's Definitive Proxy Statement on Schedule 14A filed with the U.S. Securities and Exchange Commission on March 23, 2026. The certified voting results for each of the proposals are as follows:

<u>Proposal 1 - Election of Directors</u>

The following individual was elected to serve as a director of the Company to hold office until the 2027 Annual Meeting of Shareholders or until his successor has been duly elected and qualified or until his earlier death, resignation, or removal from office.

---

| | | | |
|:---|:---|:---|:---|
| **<u>Nominee</u>** | **For** | **Withhold** | **Broker <br>Non-Votes** |
| Brian B. Tessin | 3,320,363 | 66,622 | 759,229 |

---

The following individuals were elected to serve as directors of the Company to hold office until the 2029 Annual Meeting of Shareholders or until their respective successors have been duly elected and qualified or until their earlier death, resignation, or removal from office.

---

| | | | |
|:---|:---|:---|:---|
| **<u>Nominee</u>** | **For** | **Withhold** | **Broker <br>Non-Votes** |
| Dr. Jeffrey J. Barnes | 3303689 | 83296 | 759229 |
| David B. Behen | 3345576 | 41409 | 759229 |
| Melinda M. Coffin | 3312891 | 74094 | 759229 |
| Vicki L. Rupp | 3328378 | 58607 | 759229 |

---

<u>Proposal 2 - Advisory (Non-Binding) Vote on Executive Compensation</u>

&nbsp;&nbsp;&nbsp;&nbsp;The Company's shareholders voted to approve, on an advisory, non-binding basis, the compensation of the Company's named executive officers.

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 3,170,901 | 102,232 | 113,852 | 759,229 |

---

<u>Proposal 3 - Approval of the Isabella Bank Corporation 2025 Employee Stock Purchase Plan</u>

&nbsp;&nbsp;&nbsp;&nbsp;The Company's shareholders voted to approve the Isabella Bank Corporation 2025 Employee Stock Purchase Plan.

---

| | | | |
|:---|:---|:---|:---|
| **For** | **Against** | **Abstain** | **Broker Non-Votes** |
| 3,227,845 | 47,669 | 111,471 | 759,229 |

---

<u>Proposal 4 - Ratify the Appointment of Plante & Moran, PLLC</u>

&nbsp;&nbsp;&nbsp;&nbsp;The Company's shareholders ratified the appointment of Plante & Moran, PLLC as the Company's independent registered public accounting firm for the year ending December 31, 2026.

---

| | | |
|:---|:---|:---|
| **For** | **Against** | **Abstain** |
| 4,070,547 | 39,773 | 35,894 |

---

**SIGNATURES**

&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | | |
|:---|:---|:---|:---|
| | | ISABELLA BANK CORPORATION | ISABELLA BANK CORPORATION |
| Dated: | &nbsp;&nbsp;&nbsp;May 7, 2026 | By: | /s/ Gerald J. Ritzert |
|  |  |  | Gerald J. Ritzert, Chief Financial Officer |

---