<SUBMISSION>
<ACCESSION-NUMBER>0000950152-05-005520
<TYPE>11-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20041231
<FILING-DATE>20050628
<DATE-OF-FILING-DATE-CHANGE>20050628
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>FINANCIAL INSTITUTIONS INC
<CIK>0000862831
<ASSIGNED-SIC>6021
<IRS-NUMBER>160816610
<STATE-OF-INCORPORATION>NY
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>11-K
<ACT>34
<FILE-NUMBER>000-26481
<FILM-NUMBER>05921385
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>220 LIBERTY STREET
<CITY>WARSAW
<STATE>NY
<ZIP>14569
<PHONE>7167861100
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>220 LIBERTY STREET
<CITY>WARSAW
<STATE>NY
<ZIP>14569
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>l14656ae11vk.htm
<DESCRIPTION>FINANCIAL INSTITUTIONS, INC.   11-K/401(K) PLAN
<TEXT>
<HTML>
<HEAD>
<TITLE>Financial Institutions, Inc.   11-K</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<P align="center" style="font-size: 14pt"><B>UNITED STATES</B>

<DIV align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B></DIV>


<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<P align="center" style="font-size: 18pt"><B>FORM 11-K</B>


<P align="center" style="font-size: 12pt"><FONT face="Wingdings">&#254;</FONT> <B>ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE<BR>
SECURITIES EXCHANGE ACT OF 1934</B>



<P align="center" style="font-size: 10pt">For the fiscal year ended December&nbsp;31, 2004



<P align="center" style="font-size: 12pt"><FONT face="Wingdings">&#111;</FONT> <B>TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE<BR>
SECURITIES EXCHANGE ACT OF 1934</B>



<P align="center" style="font-size: 10pt">Commission File Number 0-26481



<P align="center" style="font-size: 10pt">A. Full title of the plan
and the address of the plan, if different from that of the issuer named below:



<P align="center" style="font-size: 10pt"><U><B>FINANCIAL INSTITUTIONS, INC. 401(k) PLAN</B></U>



<P align="center" style="font-size: 10pt">B. Name of issuer of the
securities held pursuant to the plan and the address of its principal executive office:



<P align="center" style="font-size: 10pt"><IMG src="l14656al1465600.gif" alt="(FINANCIAL INSTITUTIONS, INC. LOGO )">



<P align="center" style="font-size: 10pt">220 Liberty Street<BR>
Warsaw, NY 14569



<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>






<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<P><HR noshade><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left">
<!-- TOC -->
</DIV>
<DIV align="left">
<A name="tocpage"></A>
</DIV>

<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>



<P align="center" style="font-size: 10pt"><B>Index</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="90%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Page</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px"><B>A. Financial Statements and Schedule</B></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px"><A href="#101">Report of Independent Registered Public Accounting Firm</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">1</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px"><A href="#102">Statements of Net Assets Available for Benefits at December&nbsp;31, 2004 and 2003</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">2</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px"><A href="#103">Statements of Changes in Net Assets Available for Benefits for the Years Ended December&nbsp;31, 2003 and 2002</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">3</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px"><A href="#104">Notes to Financial Statements</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">4</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px">Schedule:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:60px; text-indent:-15px"><A href="#105">Schedule&nbsp;H, Line 4i &#150; Schedule of Assets (Held at End of Year)</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">8</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px"><A href="#106">Signature</A></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px"><B>B. Exhibits</B></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:30px; text-indent:-15px">23 Consent of Independent Registered Public Accounting Firm</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
<TR><TD colspan="9"><FONT size="2">&nbsp;<A HREF="l14656aexv23.htm">EX-23 Consent of Independent Registered Public Accounting Firm</A></FONT></TD></TR>
</TABLE>
</DIV>

<DIV align="left">
<!-- /TOC -->
</DIV>


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left">
<A name="101"></A>
</DIV>

<P align="center" style="font-size: 10pt"><B>Report of Independent Registered Public Accounting Firm</B>



<P align="left" style="font-size: 10pt">The Plan Administrator<BR>
&nbsp;&nbsp;&nbsp;Financial Institutions, Inc. 401(k) Plan:


<P align="left" style="font-size: 10pt">We have audited the accompanying statements of net assets available for benefits of Financial
Institutions, Inc. 401(k) Plan as of December&nbsp;31, 2004 and 2003, and the related statements of
changes in net assets available for benefits for the years then ended. These financial statements
are the responsibility of the Plan&#146;s management. Our responsibility is to express an opinion on
these financial statements based on our audits.


<P align="left" style="font-size: 10pt">We conducted our audits in accordance with the standards of the Public Company Accounting Oversight
Board (United States). Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material misstatement. An
audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the
financial statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our opinion.


<P align="left" style="font-size: 10pt">In our opinion, the financial statements, referred to above present fairly, in all material
respects, the net assets available for benefits of the Financial Institutions, Inc. 401(k) Plan as
of December&nbsp;31, 2004 and 2003, and the changes in net assets available for benefits for the years
then ended in conformity with U.S. generally accepted accounting principles.


<P align="left" style="font-size: 10pt">Our audits were performed for the purpose of forming an opinion on the basic financial statements
taken as a whole. Schedule&nbsp;H, Line 4i &#150; Schedule of Assets (Held at End of Year) is presented for
the purpose of additional analysis and is not a required part of the basic financial statements but
is supplementary information required by the Department of Labor&#146;s Rules and Regulations for
Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. This
supplemental schedule is the responsibility of the Plan&#146;s management. The supplemental schedule has
been subjected to the auditing procedures applied in the audit of the basic financial statements
and, in our opinion, is fairly stated in all material respects in relation to the basic financial
statements taken as a whole.



<P align="left" style="font-size: 10pt"><BR>/s/ KPMG<BR>

<P align="left" style="font-size: 10pt">Buffalo, New York<BR>
June&nbsp;24, 2005


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>


<DIV align="left">
<A name="102"></A>
</DIV>

<P align="center" style="font-size: 10pt">Statements of Net Assets Available for Benefits



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004 and 2003


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Assets:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Investments, at fair value:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Cash and cash equivalents</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">6,918</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">85,448</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Mutual funds (Cost of $17,132,130 and $16,973,811 at
December&nbsp;31, 2004 and 2003, respectively)</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20,652,589</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">19,214,050</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Financial Institutions, Inc. common stock (Cost of $665,112 and
$605,208 at December&nbsp;31, 2004 and 2003, respectively)</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">651,326</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">670,519</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Participant loans</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">453,555</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">372,898</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Total investments</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">21,764,388</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20,342,915</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Receivables:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Employer contribution</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">13,347</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">9,538</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Participant contributions</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">80,935</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">57,746</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Other</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">22,168</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">17,199</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Total receivables</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">116,450</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">84,483</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Net assets available for
benefits</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">21,880,838</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20,427,398</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="left" style="font-size: 10pt">See accompanying notes to financial statements.



<P align="center" style="font-size: 10pt"> &#147;Title&#148; 2
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>


<DIV align="left">
<A name="103"></A>
</DIV>

<P align="center" style="font-size: 10pt">Statements of Changes in Net Assets Available for Benefits



<P align="center" style="font-size: 10pt">Years ended December&nbsp;31, 2004 and 2003


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Additions:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Additions to net assets attributed to:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Investment income:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Net appreciation in fair value of investments</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">1,499,296</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">3,001,450</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Interest from participant loans</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">28,439</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">27,187</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:75px; text-indent:-15px">Interest and dividends</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">33,440</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">32,599</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:90px; text-indent:-15px">Total investment income</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,561,175</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">3,061,236</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Contributions and transfers:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Transfers in from other plans</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">233,709</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">105,687</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Participant</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,935,893</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,768,085</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Employer</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">326,014</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,121,481</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:90px; text-indent:-15px">Total contributions
and transfers</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,495,616</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,995,253</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:90px; text-indent:-15px">Total additions</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">4,056,791</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6,056,489</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Deductions:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Deductions from net assets attributed to:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:60px; text-indent:-15px">Benefits paid to participants</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,603,351</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">881,794</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:90px; text-indent:-15px">Net increase</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,453,440</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5,174,695</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Net assets available for benefits:</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:45px; text-indent:-15px">Beginning of year</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20,427,398</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15,252,703</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:45px; text-indent:-15px">End of year</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">21,880,838</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">20,427,398</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="left" style="font-size: 10pt">See accompanying notes to financial statements.



<P align="center" style="font-size: 10pt"> &#147;Title&#148; 3
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>


<DIV align="left">
<A name="104"></A>
</DIV>

<P align="center" style="font-size: 10pt">Notes to Financial Statements



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004 and 2003



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(1)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Description of the Plan</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The following description of the Financial Institutions, Inc. 401(k) Plan (the Plan) provides
only general information. Participants should refer to the Plan agreement for a complete
description of the Plan&#146;s provisions.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(a)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>General</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Plan is a defined contribution plan sponsored and administered by Financial
Institutions, Inc. (the Company). All employees of the Company and its subsidiaries are
eligible to participate in the Plan on the first of the month following the date of their
employment and upon the attainment of age 20-1/2. Participants become eligible to receive
the employer match following completion of one year of service, based on hire date
anniversary. The Plan is subject to the provisions of the Employee Retirement Income
Security Act of 1974 (ERISA).</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Administration of the Plan is the responsibility of the Executive Committee (the Trustee)
of the Company. Fidelity Investments Institutional Brokerage Group (the Custodian or
Fidelity) holds the assets of the Plan and invests, controls, and disburses the funds of
the Plan in accordance with the Plan agreement. The Burke Group, a subsidiary of the
Company, is the recordkeeper for the Plan (party-in-interest).</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(b)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Contributions</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Each year, participants may contribute up to 50% of pretax annual compensation, as
defined in the Plan. Participants may also contribute amounts representing distributions
from other qualified defined benefit or defined contribution plans. Participants direct
the investment of their contributions and the Company&#146;s matching contributions into
various investment options offered by the Plan. The Plan participants are able to select
the Company&#146;s common stock as an investment option for up to 25% of their total account
balance. The Company matches 25% of a participant&#146;s contributions up to the first 8% of
compensation. The Company may also make additional discretionary matching contributions
($0 in 2004 and $810,842 in 2003). Contributions are subject to certain limitations.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(c)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Participant Accounts</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Each participant&#146;s account is credited with the participant&#146;s contributions, the
Company&#146;s matching contributions, and all earnings or losses (realized or unrealized)
thereon.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(d)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Vesting</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Company and participant contributions are fully vested at the time of contribution.
Earnings are also immediately vested.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(e)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Payment of Benefits</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The participant&#146;s account balance will be distributed upon termination of employment due
to separation from service, retirement, disability, or death, or upon financial hardship
as defined in the Internal Revenue Code (IRC)&nbsp;and are recorded by the Plan when paid.</TD>
</TR>

</TABLE>


<P align="right" style="font-size: 10pt">(Continued)




<P align="center" style="font-size: 10pt"> 4
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>



<P align="center" style="font-size: 10pt">Notes to Financial Statements



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004 and 2003



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>When a participant terminates employment, the participant may elect to receive benefits
in a lump-sum distribution or a deferred annuity. If the participant&#146;s account
attributable to Company contributions is $5,000 or less, the form of the distribution is
at the discretion of the Plan administrator.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Withdrawal of an active employee&#146;s before-tax contributions prior to a participant
reaching age 59-1/2 may only be made on account of financial hardship as determined by
the Trustee.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(f)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Participant Loans</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Participants may borrow from their accounts up to a maximum amount equal to the lesser of
$50,000 or 50% of their account balances. Loan terms must have a definite repayment
period not to exceed five years unless the loan is used for the purchase of a principal
residence, in which case the repayment period may not exceed 15&nbsp;years. The loans are
secured by the participant&#146;s account and bear interest at 2% above the prime rate at the
time of the loan origination, currently ranging from 6% to 11.5%. Principal and interest
are paid ratably through after-tax payroll deductions.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(g)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Plan Expenses</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Expenses related to the administration and investment activity of the Plan are borne by
the Company, at its discretion, and are therefore not reflected in the accompanying
financial statements.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(2)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Summary of Significant Accounting Policies</B></TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(a)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Basis of Accounting</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The financial statements have been prepared on the accrual basis in conformity with
accounting principles generally accepted in the United States of America. In preparing
these financial statements, the plan administrator has made a number of estimates and
assumptions relating to the reporting of net assets available for benefits and changes
therein. Actual results may differ from those estimates. Reclassifications are made
whenever necessary to conform with the current year presentation.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(b)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Investments</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>All contributions made to the Plan may be invested in one or more investment options. The
investments are carried at fair value. Participant loans are carried at their outstanding
balances, which approximate fair value. Transactions are accounted for on a trade date
basis. Investment income includes interest, dividends and realized and unrealized gains and losses
applicable to the plan shares in the funds. The Plan presents in the statement of changes
in net assets available for plan benefits the net appreciation (depreciation)&nbsp;in the fair
value of its investments, which consists of the realized gains and losses and the
unrealized appreciation or depreciation on these investments during the year.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The investments are exposed to various risks, such as interest rate, market and credit
risk. Due to the level of risk associated with certain investments and the level of
uncertainty related to changes in the value of investments, it is at least reasonably
possible that changes in the near term would materially</TD>
</TR>

</TABLE>


<P align="right" style="font-size: 10pt">(Continued)




<P align="center" style="font-size: 10pt"> 5
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>



<P align="center" style="font-size: 10pt">Notes to Financial Statements



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004 and 2003



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>effect participants&#146; account
balances and the amounts reported in the statement of net assets available for benefits
and the statement of changes in net assets available for benefits.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><B><I>(c)</I></B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B><I>Participant Loans &#150; Payment of Benefits</I></B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Any unpaid loan balance at the time a participant withdraws from the Plan is presented as
a benefit paid to participants on the statement of changes in net assets available for
benefits. All other benefits are recorded when paid.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(3)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Investments</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The following presents investments that represent 5% or more of the Plan&#146;s net assets as of
December&nbsp;31, 2004 and 2003:</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Federated Capital Preservation Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">4,631,632</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">4,866,982</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Fidelity Equity Income Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,029,975</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,845,361</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Franklin Capital Growth Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,066,650</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,229,023</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Gabelli Westwood Balanced Retail Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,217,241</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,064,859</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Oppenheimer Global A Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,291,812</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center">N/A</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Pimco Total Return Administrative Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,469,256</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,262,726</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Waddell &#038; Reed Accumulative Y Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,349,315</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,463,711</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Wasatch Small Cap Growth Fund</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,759,891</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,452,189</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="left" style="margin-left:4%; font-size: 10pt">Net appreciation in fair value of investments for the years ended December&nbsp;31, 2004 and 2003
are as follows:

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Mutual funds</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">1,401,405</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,984,704</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Financial Institutions Inc., common stock</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">97,891</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">16,746</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">1,499,296</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">3,001,450</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(4)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Reconciliation of Employee Benefit Plan (Form&nbsp;5500) to Statements of Net Assets Available for
Benefits and Changes in Net Assets Available for Benefits</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The following is a reconciliation of net assets as reported on the statements of net assets
available for benefits to Form&nbsp;5500s as of December&nbsp;31, 2004 and 2003:</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Net assets available for benefits</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">21,880,838</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">20,427,398</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Distributions payable included on Form&nbsp;5500</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">&#151;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
    <TD align="right">(67,464</TD>
    <TD nowrap>)</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Net assets as reported on line 1(L) of Form&nbsp;5500 (Schedule&nbsp;H)</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">21,880,838</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">20,359,934</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="right" style="font-size: 10pt">(Continued)




<P align="center" style="font-size: 10pt"> 6
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>



<P align="center" style="font-size: 10pt">Notes to Financial Statements



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004 and 2003




<P align="left" style="margin-left:4%; font-size: 10pt">The following is a reconciliation of distributions to participants as reported on the
statements of changes in net assets available for benefits to Form&nbsp;5500 for the years ended
December&nbsp;31, 2004 and 2003:

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="80%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2004</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>2003</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Distributions to participants per the financial statements</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">2,603,351</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">881,794</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Add distribution payable at current year-end</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">&#151;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">67,464</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Subtract distribution payable at prior year-end</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left">&nbsp;</TD>
    <TD align="right">(67,464</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">&#151;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Distributions to participants per Form&nbsp;5500</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">2,535,887</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">$</TD>
    <TD align="right">949,258</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(5)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Plan Termination</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Although it has not expressed any intent to do so, the Company has the right under the Plan to
discontinue its contributions at any time and to terminate the Plan subject to the provisions
of ERISA. In the event of Plan termination, participants will receive their account balances.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(6)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Tax Status</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Internal Revenue Service has determined and informed the Company by a letter dated March
28, 2000, that the Plan is designed in accordance with applicable sections of the Internal
Revenue Code (IRC). Although the Plan has been amended since receiving the determination
letter, the plan administrator believes that the Plan is designed and is currently being
operated in compliance with the applicable requirements of the IRC.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>(7)</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Related-Party Transactions</B></TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Certain plan investments are mutual funds and cash managed by Fidelity, which totaled
$20,659,507 and $19,299,498 at December&nbsp;31, 2004 and 2003, respectively. Fidelity is the
custodian as defined by the Plan and, therefore, transactions in these funds qualify as
party-in-interest transactions. Certain plan investments, totaling $651,326 and $670,519 at
December&nbsp;31, 2004 and 2003, respectively are the common stock of the Company, therefore,
transactions in this common stock qualify as party-in-interest transactions. The Burke Group,
a subsidiary of the Company, is the Plan record-keeper (party-in-interest). The Company pays
all costs related to these services. Participant loans, totaling $453,555 and $372,898 at
December&nbsp;31, 2004 and 2003, respectively are also considered party-in-interest transactions.</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"> 7
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<P><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">



</TABLE>


<P align="right" style="font-size: 10pt"><B>Schedule&nbsp;1</B>



<P align="center" style="font-size: 10pt"><B>FINANCIAL INSTITUTIONS, INC.<BR>
401(k) PLAN</B>


<DIV align="left">
<A name="105"></A>
</DIV>

<P align="center" style="font-size: 10pt">Schedule&nbsp;H, Line 4i &#150; Schedule of Assets (Held at End of Year)



<P align="center" style="font-size: 10pt">December&nbsp;31, 2004


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="50%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>(c) Description of investment,</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>(b) Identity of issuer,</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>including maturity date,</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>borrower, lessor,</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>rate of interest, collateral, and</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>(d) Current</B></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>(a)</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>or similar party</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>par, or maturity value</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2" style="border-bottom: 1px solid #000000"><B>value</B></TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Federated Capital Preservation Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$</TD>
    <TD align="right" valign="top">4,631,632</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Contrafund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">678,075</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Equity Income Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">2,029,975</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Diversified International Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">453,336</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Spartan 500 Index Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">742,625</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Spartan Extended Market Index Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">244,443</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Spartan Money Market Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">495,661</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Franklin Capital Growth Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">2,066,650</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Gabelli Westwood Balanced Retail Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">1,217,241</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Janus Mercury Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">830,089</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Oppenheimer Capital Appreciation Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">289,864</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Oppenheimer Global A Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">1,291,812</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Pimco Total Return Administrative Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">1,469,256</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Van Kampen Comstock A Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">496,561</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Van Kampen Equity Income Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">606,163</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Waddell &#038; Reed Accumulative Y Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">1,349,315</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Wasatch Small Cap Growth Fund</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">1,759,891</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Fidelity Cash Reserves-Uninvested Cash</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Mutual fund</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">6,918</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Financial Institutions, Inc. Company Stock</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Common stock</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">651,326</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">*</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Participant loans</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top" nowrap>6.00% &#150; 11.5%, due 2005 through 2019</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD align="right" valign="top">453,555</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap colspan="2" align="right" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="background: #cceeff">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">$</TD>
    <TD align="right" valign="top">21,764,388</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD align="center"><DIV style="margin-left:15px; text-indent:-15px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
        <TD nowrap colspan="2" align="right" valign="top" style="border-top: 3px double #000000">&nbsp;</TD>
    <TD valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 18%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top">
    <TD width="1%" nowrap align="left">*</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="96%">Party-in-interest transaction.</TD>
</TR>

</TABLE>



<P align="left" style="font-size: 10pt">See accompanying independent auditors&#146; report.



<P align="center" style="font-size: 10pt"> &#147;Title&#148; 8
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#tocpage">Table of Contents</A></H5><P>


<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left">
<A name="106"></A>
</DIV>

<P align="center" style="font-size: 10pt"><B>SIGNATURE</B>


<P align="left" style="font-size: 10pt"><I>The Plan</I>. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or
other persons who administer the employee benefit plan) have duly caused this annual report to be
signed on its behalf by the undersigned hereunto duly authorized.


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="19%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="45%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">FINANCIAL INSTITUTIONS, INC. 401(k) PLAN</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Date: June&nbsp;28, 2005
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">/s/ Peter G. Humphrey</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 1pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>

<TD align="left" valign="top" style="border-bottom: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Peter G. Humphrey</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President and Chief Executive Officer</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>l14656aexv23.htm
<DESCRIPTION>EX-23 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
<HTML>
<HEAD>
<TITLE>Exhibit 23</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<P align="left" style="font-size: 10pt">Exhibit&nbsp;23



<P align="center" style="font-size: 10pt"><B>Consent of Independent Registered Public Accounting Firm</B>



<P align="left" style="font-size: 10pt">The Plan Administrator of<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Financial Institutions, Inc. 401(k) Plan:


<P align="left" style="font-size: 10pt">We consent to incorporation by reference in the Registration Statement on Form S-8 (File No.
333-87338) pertaining to the Financial Institutions, Inc. 401(k) Plan, of our report dated June&nbsp;24,
2005 relating to the statements of net assets available for benefits of Financial Institutions,
Inc. 401(k) Plan as of December&nbsp;31, 2004 and 2003, and the related statements of changes in net
assets available for benefits for the years then ended, and the schedule of assets held at the end
of year as of December&nbsp;31, 2004, which appear in the December&nbsp;31, 2004 annual report on Form 11-K
of the Financial Institutions, Inc. 401(k) Plan.

<P align="left" style="font-size: 10pt"><BR>/s/ KPMG<BR>

<P align="left" style="font-size: 10pt">Buffalo, New York<BR>
June&nbsp;28, 2005



<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

</BODY>
</HTML>
</TEXT>
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