<SEC-DOCUMENT>0001127602-23-019226.txt : 20230622
<SEC-HEADER>0001127602-23-019226.hdr.sgml : 20230622
<ACCEPTANCE-DATETIME>20230622144604
ACCESSION NUMBER:		0001127602-23-019226
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230622
FILED AS OF DATE:		20230622
DATE AS OF CHANGE:		20230622

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Pecor Raymond C III
		CENTRAL INDEX KEY:			0001475265

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13695
		FILM NUMBER:		231033039

	MAIL ADDRESS:	
		STREET 1:		1 KING STREET DOCK
		CITY:			BURLINGTON
		STATE:			VT
		ZIP:			05401

ISSUER:		

	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

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-06-22</periodOfReport>

    <issuer>
        <issuerCik>0000723188</issuerCik>
        <issuerName>COMMUNITY BANK SYSTEM, INC.</issuerName>
        <issuerTradingSymbol>CBU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001475265</rptOwnerCik>
            <rptOwnerName>Pecor Raymond C III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COMMUNITY BANK SYSTEM, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>5790 WIDEWATERS PARKWAY</rptOwnerStreet2>
            <rptOwnerCity>DEWITT</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>13214</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock (Deferred Compensation)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2023-06-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>417.5154</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>49.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>417.5154</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5468.0365</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each unit of phantom stock is the economic equivalent of one share of Community Bank System, Inc. common stock.  The units of phantom stock relating to the Deferred Compensation Plan will be settled in Community Bank System, Inc. common stock at future dates selected by the reporting person.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Raymond C. Pecor, III</signatureName>
        <signatureDate>2023-06-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): CONFIRMING STATEMENT
<TEXT>
Confirming Statement

      This Confirming Statement (?Statement?) confirms that the undersigned,
Raymond C. Pecor, III, has authorized, directed and designated each of
Danielle M. Cima, Brian Fancher, George J. Getman and Laura Mattice (each
a ?Designee? and together, the ?Designees?), or either of them acting
singly, to: (1) prepare, execute and file for and on behalf of the
undersigned with the U.S. Securities and Exchange Commission (the ?SEC?) a
Form ID, including amendments thereto, enabling the undersigned to make
electronic filings with the SEC of reports required by Section 16(a) of
the Securities Exchange Act of 1934 and any rule or regulation thereunder;
and (2) prepare, execute and file for and on behalf of the undersigned
with the SEC and any stock exchange or similar authority, all Forms 3, 4,
and 5, including any amendments thereto, that the undersigned is required
to file as an officer and/or director of Community Bank System, Inc. (the
?Company?) in accordance with Section 16(a) of the Securities Exchange Act
of 1934 and any rule or regulation thereunder.

      The authority of the Designees under this Statement shall continue
until the undersigned is no longer required to file Forms 3, 4, and 5 with
respect to the undersigned?s holdings of and/or transactions in securities
of the Company, unless earlier revoked by the undersigned in a signed writing
delivered to the Designees.  The undersigned acknowledges that the Designees
are not assuming, nor is the Company assuming, any of the undersigned?s
responsibilities to comply with Section 16 of the Securities Exchange Act
of 1934.  This Statement is not intended to be a power of attorney as defined
in the New York General Obligations Law, Article 5, Title 15, Section 5-1501,
and in the event this Statement is determined to be a power of attorney under
such statute, this Statement shall not revoke any power of attorney
previously executed by the undersigned and shall not be revoked by any
subsequent power of attorney unless such subsequent power of attorney
expressly provides that it revokes this Statement by referring to the date
and subject hereof.


Date: May 12, 2017


/s/ Raymond C. Pecor, III
Name:  Raymond C. Pecor, III




</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
