<SEC-DOCUMENT>0001193125-24-266107-index.html : 20241126
<SEC-HEADER>0001193125-24-266107.hdr.sgml : 20241126
<ACCEPTANCE-DATETIME>20241126160640
ACCESSION NUMBER:		0001193125-24-266107
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20241126
DATE AS OF CHANGE:		20241126

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FINANCIAL INSTITUTIONS INC
		CENTRAL INDEX KEY:			0000862831
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				160816610
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-283475
		FILM NUMBER:		241503696

	BUSINESS ADDRESS:	
		STREET 1:		220 LIBERTY STREET
		CITY:			WARSAW
		STATE:			NY
		ZIP:			14569
		BUSINESS PHONE:		5857861100

	MAIL ADDRESS:	
		STREET 1:		220 LIBERTY STREET
		CITY:			WARSAW
		STATE:			NY
		ZIP:			14569
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>d848473ds3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: d848473ds3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.2
<SEQUENCE>2
<FILENAME>d848473dex42.htm
<DESCRIPTION>EX-4.2
<TEXT>
Document 2 - file: d848473dex42.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.3
<SEQUENCE>3
<FILENAME>d848473dex43.htm
<DESCRIPTION>EX-4.3
<TEXT>
Document 3 - file: d848473dex43.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>d848473dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 4 - file: d848473dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>5
<FILENAME>d848473dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 5 - file: d848473dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>6
<FILENAME>d848473dexfilingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 6 - file: d848473dexfilingfees.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g848473g00a01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g848473g00a01.jpg

</DOCUMENT>
</SEC-DOCUMENT>