<SEC-DOCUMENT>0001193125-12-291108.txt : 20120702
<SEC-HEADER>0001193125-12-291108.hdr.sgml : 20120702
<ACCEPTANCE-DATETIME>20120702101724
ACCESSION NUMBER:		0001193125-12-291108
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20120702
DATE AS OF CHANGE:		20120702
EFFECTIVENESS DATE:		20120702

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CALAMOS GLOBAL TOTAL RETURN FUND
		CENTRAL INDEX KEY:			0001285650
		IRS NUMBER:				203377281
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-174431
		FILM NUMBER:		12938778

	BUSINESS ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563
		BUSINESS PHONE:		6302451046

	MAIL ADDRESS:	
		STREET 1:		2020 CALAMOS COURT
		STREET 2:		C/O CALAMOS ADVISORS LLC
		CITY:			NAPERVILLE
		STATE:			IL
		ZIP:			60563
</SEC-HEADER>
<DOCUMENT>
<TYPE>497
<SEQUENCE>1
<FILENAME>d369932d497.htm
<DESCRIPTION>PROSPECTUS SUPPLEMENT
<TEXT>
<HTML><HEAD>
<TITLE>Prospectus Supplement</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">
 <P STYLE="margin-top:0px;margin-bottom:0px;padding-bottom:0px;" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>C<SMALL>ALAMOS<FONT STYLE="font-family:Times New Roman" SIZE="1"><SUP
STYLE="vertical-align:baseline; position:relative; bottom:.8ex">&reg;</SUP></FONT></SMALL> G<SMALL>LOBAL</SMALL> T<SMALL>OTAL</SMALL> R<SMALL>ETURN</SMALL> F<SMALL>UND</SMALL> </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Supplement dated July 2, 2012 to Prospectus and Statement of Additional Information, each dated February&nbsp;29,&nbsp;2012.
</B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Calamos Global Total Return Fund (the &#147;Fund&#148;) has determined to list its common shares of beneficial interest
(&#147;common stock&#148;) on the NASDAQ Global Select Market (&#147;NASDAQ&#148;). Effective July&nbsp;2, 2012, the Fund&#146;s common stock will cease trading on the New York Stock Exchange, and will commence trading on the NASDAQ under the
Fund&#146;s current ticker symbol, &#147;CGO&#148;. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Computershare Limited acquired the stock transfer and investor servicing
business of BNY Mellon Asset Servicing. Accordingly, Computershare Shareowner Services LLC, a subsidiary of Computershare Limited now serves as the dividend disbursing agent, transfer agent and registrar for the Fund&#146;s shares. There are no
operational changes in the services being provided to the Fund as a result of the acquisition. All instances of &#147;BNY Mellon Asset Servicing&#148; in the Fund&#146;s registration statement are changed to &#147;Computershare Shareowner Services
LLC.&#148; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The address of Computershare Shareowner Services LLC is PO Box 358016, Pittsburg, PA 15252-8016. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Please retain this supplement for future reference. </FONT></P>
</BODY></HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
