# EDGAR Filing Document

**Accession Number:** 0000946673
**File Stem:** 0000946673-26-000116
**Filing Date:** 2026-4
**Character Count:** 2560
**Document Hash:** e3919b45358c063d38b56f852a1474ce
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000946673-26-000116.hdr.sgml**: 20260406

**ACCESSION NUMBER**: 0000946673-26-000116

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260406

**DATE AS OF CHANGE**: 20260406

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BANNER CORP
- **CENTRAL INDEX KEY:** 0000946673
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 911691604
- **STATE OF INCORPORATION:** WA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-26584
- **FILM NUMBER:** 26841677

**BUSINESS ADDRESS:**
- **STREET 1:** 10 S FIRST AVENUE
- **CITY:** WALLA WALLA
- **STATE:** WA
- **ZIP:** 99362
- **BUSINESS PHONE:** 509-527-3636

**MAIL ADDRESS:**
- **STREET 1:** 10 S FIRST AVENUE
- **CITY:** WALLA WALLA
- **STATE:** WA
- **ZIP:** 99362

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST WASHINGTON BANCORP INC /WA/
- **DATE OF NAME CHANGE:** 19980727

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST SAVINGS BANK OF WASHINGTON BANCORP INC
- **DATE OF NAME CHANGE:** 19950614

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, DC 20549** 

**SCHEDULE 14A INFORMATION** 

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

**Securities Exchange Act of 1934** 

Filed by the registrant ☒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Filed by a party other than the registrant ☐

Check the appropriate box:

☐&nbsp;&nbsp;&nbsp;&nbsp;Preliminary proxy statement

☐&nbsp;&nbsp;&nbsp;&nbsp;**Confidential, for use of the Commission only (as permitted by Rule 14a-6(e)(2))** 

☐&nbsp;&nbsp;&nbsp;&nbsp;Definitive proxy statement

**☒**&nbsp;&nbsp;&nbsp;&nbsp;Definitive additional materials

☐&nbsp;&nbsp;&nbsp;&nbsp;Soliciting material pursuant to § 240.14a-12

**BANNER CORPORATION** 

**(Name of registrant as specified in its charter)** 

**N/A** 

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

Payment of filing fee (Check all boxes that apply):

**☒** &nbsp;&nbsp;&nbsp;&nbsp;No fee required.

☐ &nbsp;&nbsp;&nbsp;&nbsp;Fee paid previously with preliminary materials.

☐ &nbsp;&nbsp;&nbsp;&nbsp;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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