<SEC-DOCUMENT>0001193125-17-170800-index.html : 20170515
<SEC-HEADER>0001193125-17-170800.hdr.sgml : 20170515
<ACCEPTANCE-DATETIME>20170515170725
ACCESSION NUMBER:		0001193125-17-170800
CONFORMED SUBMISSION TYPE:	FWP
PUBLIC DOCUMENT COUNT:		24
FILED AS OF DATE:		20170515
DATE AS OF CHANGE:		20170515

SUBJECT COMPANY:	

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

	FILING VALUES:
		FORM TYPE:		FWP
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-202791
		FILM NUMBER:		17845608

	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

FILED BY:		

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

	FILING VALUES:
		FORM TYPE:		FWP

	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>FWP
<SEQUENCE>1
<FILENAME>d384441dfwp.htm
<DESCRIPTION>FWP
<TEXT>
Document 1 - file: d384441dfwp.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>g384441fwps10gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: g384441fwps10gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g384441fwps11gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: g384441fwps11gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g384441fwps12gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g384441fwps12gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g384441fwps13gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g384441fwps13gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g384441fwps14gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g384441fwps14gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g384441fwps15gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g384441fwps15gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g384441fwps16gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g384441fwps16gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g384441fwps17gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g384441fwps17gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g384441fwps18gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g384441fwps18gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g384441fwps19gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g384441fwps19gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g384441fwps1gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g384441fwps1gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>g384441fwps20gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 13 - file: g384441fwps20gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>g384441fwps21gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 14 - file: g384441fwps21gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>g384441fwps22gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 15 - file: g384441fwps22gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>16 <FILENAME>g384441fwps23gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 16 - file: g384441fwps23gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>g384441fwps2gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 17 - file: g384441fwps2gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>18 <FILENAME>g384441fwps3gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 18 - file: g384441fwps3gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>19 <FILENAME>g384441fwps4gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 19 - file: g384441fwps4gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>g384441fwps5gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 20 - file: g384441fwps5gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>21 <FILENAME>g384441fwps6gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 21 - file: g384441fwps6gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>g384441fwps7gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: g384441fwps7gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>g384441fwps8gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: g384441fwps8gbgd.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>24 <FILENAME>g384441fwps9gbgd.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 24 - file: g384441fwps9gbgd.jpg
</DOCUMENT> </SEC-DOCUMENT>