# EDGAR Filing Document

**Accession Number:** 0000944745
**File Stem:** 0001193125-26-145526
**Filing Date:** 2026-4
**Character Count:** 5979
**Document Hash:** 7bd766ddd5219c95e860e3036dacb84f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-145526.hdr.sgml**: 20260407

**ACCESSION NUMBER**: 0001193125-26-145526

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 10

**FILED AS OF DATE**: 20260407

**DATE AS OF CHANGE**: 20260407

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CIVISTA BANCSHARES, INC.
- **CENTRAL INDEX KEY:** 0000944745
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 341558688
- **STATE OF INCORPORATION:** OH
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36192
- **FILM NUMBER:** 26844750

**BUSINESS ADDRESS:**
- **STREET 1:** 100 EAST WATER ST
- **STREET 2:** P O BOX 5016
- **CITY:** SANDUSKY
- **STATE:** OH
- **ZIP:** 44870
- **BUSINESS PHONE:** 4196254121

**MAIL ADDRESS:**
- **STREET 1:** 100 EAST WATER ST
- **STREET 2:** P O BOX 5016
- **CITY:** SANDUSKY
- **STATE:** OH
- **ZIP:** 44870

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST CITIZENS BANC CORP /OH
- **DATE OF NAME CHANGE:** 19950502

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**SCHEDULE 14A INFORMATION** 

**Proxy Statement Pursuant to Section 14(a) of the** 

**Securities Exchange Act of 1934** 

**(Amendment No.)** 

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material under Rule 14a-12

## CIVISTA BANCSHARES, INC.
**(Name of registrant as specified in its charter)** 

**(Name of person(s) filing proxy statement, if other than the registrant)** 

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

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| ![LOGO](g77575snap4.jpg) <br>PROXY TABULATOR: P.O. BOX 8016, CARY, NC 27512-9903<br>![LOGO](g77575snap1.jpg)  | ![LOGO](g77575dsp004.jpg) |

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| **Civista Bancshares, Inc.**<br>**Annual Meeting of Shareholders**<br>Tuesday, May 19, 2026 10:00 AM, Eastern Time<br>Sawmill Creek Resort, 400 Sawmill Creek Drive, Huron, Ohio 44839<br>**For a convenient way to view proxy materials, VOTE, and obtain directions to attend the meeting go to www.proxydocs.com/CIVB**<br>**To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.**<br>**This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting.**<br>Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet.<br>If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before May 8, 2026.<br>| ![LOGO](g77575dsp3d.jpg) <br>| **Meeting Materials:** Notice of Meeting and Proxy Statement & Annual Report on Form 10-K<br>**Important Notice Regarding the Availability of Proxy Materials for the Shareholders' Meeting to Be Held on May 19, 2026, for Shareholders of Record as of March 24, 2026**<br>**To order paper materials, use one of the following methods.**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ![LOGO](g77575page1b.jpg) <br>**Internet:**<br> **www.proxydocs.com/CIVB**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ![LOGO](g77575page1c.jpg) <br> **Call:**<br> **1-866-648-8133**<br>![LOGO](g77575page1d.jpg) <br> **E-mail:\***<br> **paper@investorelections.com**<br>**\* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material.**<br>![LOGO](g77575dsp3ejpg.jpg)  |
|  |  | Have the 12 digit control number located in the box above available when you access the website and follow the instructions. |
| **SEE REVERSE FOR FULL AGENDA** |  |  |

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Copyright© 2026 BetaNXT, Inc. or its affiliates. All Rights Reserved

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| ![LOGO](g77575page2.jpg) | **Civista Bancshares, Inc. Annual Meeting of Shareholders** |

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**THE BOARD OF DIRECTORS RECOMMENDS A VOTE:** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**FOR** ON PROPOSALS 1, 2 AND 3

 <br> **PROPOSAL**<br>

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|:---|:---|
| 1. | To elect eleven (11) Directors to serve one-year terms expiring in 2027. |
|  | 1.01 Darci Congrove |
|  | 1.02 Mark Macioce |
|  | 1.03 Julie A. Mattlin |
|  | 1.04 Mary Patricia Oliver |
|  | 1.05 Charles A. Parcher |
|  | 1.06 Clyde A. Perfect, Jr. |
|  | 1.07 Dennis G. Shaffer |
|  | 1.08 Harry Singer |
|  | 1.09 Nathan E. Weaks |
|  | 1.10 Lorina W. Wise |
|  | 1.11 Gerald B. Wurm |
| 2. | To consider and vote upon a non-binding advisory resolution to approve the compensation of the Corporation's named executive officers as disclosed in the accompanying proxy statement. |
| 3. | To ratify the appointment of Plante & Moran, PLLC as the independent registered public accounting firm of the Corporation for the fiscal year ending December 31, 2026. |
| 4. | To consider and act upon any other matter which may properly be brought before the meeting or any adjournment thereof. |

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