# EDGAR Filing Document

**Accession Number:** 0000723188
**File Stem:** 0001140361-23-014031
**Filing Date:** 2023-3
**Character Count:** 2453
**Document Hash:** 2c4e7e32078f25fa0ee52922e3755dd1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-23-014031.hdr.sgml**: 20230327

**ACCESSION NUMBER**: 0001140361-23-014031

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 4

**FILED AS OF DATE**: 20230327

**DATE AS OF CHANGE**: 20230327

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COMMUNITY BANK SYSTEM, INC.
- **CENTRAL INDEX KEY:** 0000723188
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATIONAL COMMERCIAL BANKS [6021]
- **IRS NUMBER:** 161213679
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13695
- **FILM NUMBER:** 23765218

**BUSINESS ADDRESS:**
- **STREET 1:** 5790 WIDEWATERS PKWY
- **CITY:** DEWITT
- **STATE:** NY
- **ZIP:** 13214
- **BUSINESS PHONE:** 8007242262

**MAIL ADDRESS:**
- **STREET 1:** 5790 WIDEWATERS PARKWAY
- **CITY:** DEWITT
- **STATE:** NY
- **ZIP:** 13214

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMMUNITY BANK NA, a subsidiary of Community Bank System Inc
- **DATE OF NAME CHANGE:** 20130729

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMMUNITY BANK NA, a subsidiary of Community Bank System Inc.
- **DATE OF NAME CHANGE:** 20130726

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMMUNITY BANK SYSTEM INC
- **DATE OF NAME CHANGE:** 19920703

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### <br>

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549<br>

### SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No.)

#### <br>

#### Filed by the Registrant ☒

#### <br>

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

#### <br>

#### Check the appropriate box:

#### <br>
☐ 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 Pursuant to §240.14a-12

<br> ![](logo_communitybank2022.jpg)

(Name of Registrant as Specified in Its Charter)

**(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)**<br>

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

#### <br>
☒ No fee required. <br> ☐ Fee paid previously with preliminary materials. <br> ☐ 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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