# EDGAR Filing Document

**Accession Number:** 0001412665
**File Stem:** 0001412665-23-000031
**Filing Date:** 2023-3
**Character Count:** 2200
**Document Hash:** 37709013a23c3f61714e41f10973f7c7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001412665-23-000031.hdr.sgml**: 20230315

**ACCESSION NUMBER**: 0001412665-23-000031

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230315

**DATE AS OF CHANGE**: 20230315

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MidWestOne Financial Group, Inc.
- **CENTRAL INDEX KEY:** 0001412665
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **IRS NUMBER:** 421206172
- **STATE OF INCORPORATION:** IA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35968
- **FILM NUMBER:** 23734672

**BUSINESS ADDRESS:**
- **STREET 1:** 102 SOUTH CLINTON ST.
- **CITY:** IOWA CITY
- **STATE:** IA
- **ZIP:** 52240
- **BUSINESS PHONE:** 319-356-5800

**MAIL ADDRESS:**
- **STREET 1:** 102 SOUTH CLINTON ST.
- **CITY:** IOWA CITY
- **STATE:** IA
- **ZIP:** 52240

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ISB Financial Corp.
- **DATE OF NAME CHANGE:** 20070918

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

**SCHEDULE 14A**

**(RULE 14a-101)**

**INFORMATION REQUIRED IN PROXY STATEMENT**

**SCHEDULE 14A INFORMATION**

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

**Securities Exchange Act of 1934**

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 §240.14a-12

**MIDWEST*ONE* FINANCIAL GROUP, 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 the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act rules 14a6(i)(1) and 0-11

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