<SEC-DOCUMENT>0000940394-20-001282.txt : 20200918
<SEC-HEADER>0000940394-20-001282.hdr.sgml : 20200918
<ACCEPTANCE-DATETIME>20200918115301
ACCESSION NUMBER:		0000940394-20-001282
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200918
DATE AS OF CHANGE:		20200918
EFFECTIVENESS DATE:		20200918

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EATON VANCE SENIOR INCOME TRUST
		CENTRAL INDEX KEY:			0001070732
		IRS NUMBER:				043435040

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-09013
		FILM NUMBER:		201183147

	BUSINESS ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-482-8260

	MAIL ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>chairletterfinal.htm
<DESCRIPTION>EATON VANCE SENIOR INCOME TRUST CHAIRMAN LETTER TO SHAREHOLDERS
<TEXT>
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<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">SCHEDULE
14A</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">(Rule 14a-101)</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">INFORMATION
REQUIRED IN PROXY STATEMENT</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">SCHEDULE
14A INFORMATION</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">Proxy
Statement Pursuant to Section 14(a) of the</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">Securities
Exchange Act of 1934 (Amendment No. )</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">Filed by the Registrant [X]</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">Filed by a Party other than the
Registrant [ ]</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">Check the appropriate box:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Preliminary Proxy Statement</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Confidential, For Use of
the Commission Only (as permitted by Rule 14a-6(e)(2))</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Definitive Proxy Statement</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[X] Definitive Additional Materials</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Soliciting Material Pursuant
to Section 240.14a-12</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
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    <TD STYLE="width: 100%; padding-right: 5.4pt; padding-left: 5.4pt">
        <P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt"><U>Eaton
        Vance Senior Income Trust</U></FONT></P>
        <P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">(Name of
        Registrant as Specified in Its Charter)</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">-------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0; text-align: center"><FONT STYLE="letter-spacing: -0.15pt">(Name of
Person(s) Filing Proxy Statement, if Other Than the Registrant)</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">Payment of Filing Fee (Check
the appropriate box):</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[X] No fee required.</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Fee computed on table below
per Exchange Act Rules 14a-6(i) (1) and 0-11.</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(1) Title of each class
of securities to which transaction applies:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(2) Aggregate number of
securities to which transaction applies:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0; letter-spacing: -0.15pt">(3) Per unit price or other underlying
value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and
state how it was determined):</P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(4) Proposed maximum aggregate
value of transaction:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(5) Total fee paid:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Fee paid previously
with preliminary materials. </FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">[ ] Check box if any part
of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(1) Amount previously paid:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(2) Form, Schedule or Registration
Statement no.:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(3) Filing Party:</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 6pt 0 0"><FONT STYLE="letter-spacing: -0.15pt">(4) Date Filed: </FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</FONT></P>

<P STYLE="font: 9.5pt NewsGoth Lt BT,sans-serif; margin: 0"><FONT STYLE="letter-spacing: -0.15pt">&nbsp;</FONT></P>
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<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: justify">Dear Shareholder,</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">On behalf of the Board of Trustees of Eaton Vance Senior
Income Trust, I urge you to take action to protect the Fund by using the <B><U>WHITE</U></B> proxy card to vote FOR the Board-approved
Trustee nominees listed on the proxy card.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">A family of hedge funds and their manager, Saba Capital Management,
L.P., has nominated three candidates for election to the Fund&rsquo;s Board of Trustees. Saba is an activist investor that frequently
targets registered closed-end funds. According to data from FactSet Research Systems, Inc., Saba has engaged in 40 activist campaigns
against registered closed-end funds since 2009, encompassing 27 proxy contests, 27 shareholder proposals, 22 proposed slates of
director/trustee nominees and 20 publicly disclosed letters to fund boards and/or management. Saba has acquired ownership of more
than 21% of the Fund&rsquo;s outstanding shares over the past year, including a substantial number of shares acquired during the
early months of the ongoing COVID-19 global pandemic, when closed-end fund discounts temporarily widened.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">The three incumbent, Board-approved Trustee nominees have
directly relevant experience and have demonstrated a long history of consistently acting in the best interests of the Fund and
<B><I><U>all</U></I></B> Fund shareholders. In contrast, Saba&rsquo;s nominees do not have directly relevant experience, nor do
they have any demonstrated history of acting in the best interests of the Fund or a similar fund. In short, electing Saba&rsquo;s
nominees will serve the Saba agenda. The Board&rsquo;s eleven current Trustees are highly qualified individuals who have a broad
range of industry and professional backgrounds and well represent the diversity of the Fund&rsquo;s investor base. There is nothing
to suggest that the Fund&rsquo;s governance would be improved by the election of the Saba nominees or by changing the Board&rsquo;s
structure as Saba is recommending.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">Since the Fund&rsquo;s inception in 1998, the Board has focused
on ensuring that the Fund continues to deliver on its investment objective to provide a high level of current income, consistent
with the preservation of capital. The high caliber of the Fund&rsquo;s management and Board oversight is demonstrated by the Fund&rsquo;s
historical shareholder returns. For the five years ended August 31, 2020, the Fund&rsquo;s average annual return based on change
in market price with dividends reinvested (market return) was 5.41%. This compares to average annual returns over the same period
of 3.74% for the Fund&rsquo;s benchmark, the S&amp;P/LSTA Leveraged Loan Index, and an average of 2.98% annually for the Morningstar
closed-end bank loan fund peer group.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">As a closed-end fund activist, Saba&rsquo;s tactic is simple:
buy fund shares at a discount during periods of market dislocation, and then agitate to compel the target fund to take out the
Saba position at a higher price. Time and again, these actions have proven harmful to fund shareholders &ndash; by interfering
with a fund&rsquo;s investment program, distracting management, raising fund expenses, reducing the liquidity of fund shares and,
in certain cases, terminating the fund. The election of Saba&rsquo;s nominees will further Saba&rsquo;s agenda, resulting in harm
to the Fund and its shareholders. Again, please help the Board protect the Fund by using the <B><U>WHITE</U></B> proxy card to
vote FOR the Board-approved Trustee nominees listed on the proxy card.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt"></P>

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<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">&nbsp;</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: justify">For decades, federal securities law
has recognized, and has sought to prevent, the harm to other fund shareholders that can result when a self-interested investor
gains control. To protect against that risk, a hedge fund (or any other investment company) is normally limited to owning not
more than three percent of a registered fund&rsquo;s shares. To circumvent that limitation, Saba has accumulated its position
in Fund shares through multiple hedge funds and separate accounts, the combined holdings of which are <B><I><U>more than seven
times the allowable limit for a single fund</U></I></B>. Your Board recognizes Saba&rsquo;s actions seeking to gain control of
the Fund in this manner as a blatant evasion of the intent of federal securities law.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt"><B><I>I urge you to vote your shares in a way that will deny
Saba the opportunity to seize control of the Fund to advance its self-serving agenda and expose other shareholders to potential
harm.</I></B></P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">Please read the proxy materials, which explain why the Board
believes its approved nominees deserve your vote.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">Your vote is extremely important. Please act now to help
protect your investment. Using the <B><U>WHITE</U></B> card, cast your vote FOR the Board-approved nominees. Voting takes just
a few minutes and can be done on line, by phone or through the mail by following the instructions on the <B><U>WHITE</U></B> proxy
card. If you hold your shares through a broker-dealer and do not give voting instructions to your broker-dealer, your broker-dealer
will not be able to vote your shares. I urge you to instruct your broker-dealer to vote your shares with the <B><U>WHITE</U></B>
proxy card.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">Saba representatives may contact you to solicit your vote.
Please do not mail in the GOLD proxy card sent by the Saba, or any proxy card other than the <B><U>WHITE</U></B> proxy card. Doing
so would cancel your vote to support the Fund and its current Board.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt">Thank you for your vote to support the best interests of
all Fund shareholders.</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: justify">Sincerely,</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0">William H. Park</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0">Chairperson, Board of Trustees</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0">Eaton Vance Senior Income Trust</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: center; color: #00B1F1"><B>If you have any questions,
you may speak to a live representative at the Fund&rsquo;s proxy solicitor, AST Fund Solutions, LLC, toll-free at (800) 992-3086.</B></P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: center; color: #00B1F1"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: center; color: #00B1F1"><B></B></P>

<P STYLE="font: 9pt NewsGothicBT-Italic; margin: 0; text-align: center"><I>Past performance is no guarantee of future results.
Returns are historical and are calculated net of management fees and other expenses by determining the percentage change in market
price with all distributions reinvested in accordance with the Fund&rsquo;s Dividend Reinvestment Plan. Performance at market price
will differ from performance at net asset value due to variations in the Fund&rsquo;s market price versus net asset value, which
may reflect factors such as fluctuations in supply and demand for Fund shares, changes in Fund distributions, shifting market expectations
for the Fund&rsquo;s future returns and distribution rates, and other considerations affecting the trading prices of closed-end
funds. Investment return and principal value will fluctuate so that shares, when sold, may be worth more or less than their original
cost. Performance for periods less than or equal to one year is cumulative. Performance is for the stated time periods only; due
to market volatility, current Fund performance may be lower or higher than the quoted returns. For performance as of the most recent
month-end, please refer to eatonvance.com.</I></P>
<P STYLE="font: 12pt Calibri, Helvetica, Sans-Serif; margin: 0 0 6pt; text-align: center; color: #00B1F1"><B>&nbsp;</B></P>
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