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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000898430-03-003329.txt : 20030625
<SEC-HEADER>0000898430-03-003329.hdr.sgml : 20030625
<ACCEPTANCE-DATETIME>20030625163452
ACCESSION NUMBER:		0000898430-03-003329
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20030625

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERICAN TECHNOLOGY CORP /DE/
		CENTRAL INDEX KEY:			0000924383
		STANDARD INDUSTRIAL CLASSIFICATION:	HOUSEHOLD AUDIO & VIDEO EQUIPMENT [3651]
		IRS NUMBER:				870361799
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-105740
		FILM NUMBER:		03756919

	BUSINESS ADDRESS:	
		STREET 1:		13114 EVENING CREEK DRIVE SOUTH
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92128
		BUSINESS PHONE:		6196792114
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>d424b3.htm
<DESCRIPTION>PROSPECTUS SUPPLEMENT DATED JUNE 20, 2003
<TEXT>
<HTML><HEAD>
<TITLE>Prospectus Supplement dated June 20, 2003</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT FACE="Times New Roman" SIZE="2">Filed pursuant to Rule No. 424(b)(3) </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"
ALIGN="right"><FONT FACE="Times New Roman" SIZE="2">File Number 333-105740 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT
FACE="Times New Roman" SIZE="3"><B>Prospectus Supplement No. 1 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="3">(to Prospectus dated June 10, 2003) </FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="5"><B>2,887,425 SHARES </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="6"><B>AMERICAN TECHNOLOGY CORPORATION </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="5"><B>COMMON STOCK </B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">This Prospectus Supplement No. 1 supplements our prospectus dated June 10, 2003. The
prospectus relates to the resale of shares of our common stock by the selling stockholders identified in the prospectus (including their transferees, pledgees, donees or other successors). You should read this prospectus supplement in conjunction
with the prospectus, and this prospectus supplement is qualified by reference to the prospectus, except to the extent that the information in this prospectus supplement supersedes the information contained in the prospectus. </FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2"><B><I>Amendments to Selling Stockholder Table </I></B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">1. The information relating to Adeebeh Tanfiq Mansour and certain footnotes
contained in the first table of selling stockholders listed in the prospectus is hereby amended as follows: </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE" ALIGN="center">

<TR>
<TD VALIGN="bottom" WIDTH="38%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Selling Stockholder</B></FONT></P><HR WIDTH="91" SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Common<BR>Stock<BR>Underlying<BR>Series E<BR>Preferred<BR>Stock</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Common<BR>Stock<BR>Underlying<BR>Common<BR>Stock<BR>Warrant</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Outstanding<BR>Common<BR>Stock</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Total<BR>Common<BR>Stock<BR>Beneficially<BR>Owned<BR>Before<BR>Offering</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Maximum<BR>Number<BR>of Shares<BR>Offered<BR>Hereby</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Shares&nbsp;of&nbsp;Common<BR>Stock Beneficially<BR>Owned</B></FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>After Offering</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" WIDTH="38%" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Name</B></FONT></P><HR WIDTH="26" SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(1)</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>Number</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(2)</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>Number</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(27)<BR></B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>Number</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(3)</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>Number</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>(4)</B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman"
SIZE="1"><B>Number</B></FONT></P><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Number</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>%</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top" WIDTH="38%"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="2">Adeebeh Tanfiq Mansour</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="5%"><FONT FACE="Times New Roman" SIZE="2">23,179</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="5%"><FONT FACE="Times New Roman" SIZE="2">23,179</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD ALIGN="right" COLSPAN="1" VALIGN="bottom" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">23,179</FONT></TD>
<TD COLSPAN="1" NOWRAP VALIGN="bottom" WIDTH="1%"><FONT SIZE="2">(5)</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">&#151;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" WIDTH="6%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="1%"><FONT FACE="Times New Roman" SIZE="2">*</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(1)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Represents shares of common stock issuable upon conversion of an aggregate of 338,250 shares of Series E Preferred Stock assuming a conversion price of $2.00 per share and assuming
the shares are held to the December 31, 2006 end of their term. The holders of our outstanding shares of Series E Preferred Stock may convert these shares into shares of our common stock at a conversion price equal to the lower of $3.25 or 90% of
volume-weighted average price of our common stock for the five trading days prior to conversion. The conversion rate cannot however be lower than $3.25 before September 30, 2003, or lower than $2.00 after such date. The conversion value of the
Series E Preferred Stock is the original purchase price, increased by $0.60 per year from February 28, 2003. The actual number of shares of common stock issuable upon conversion of the Series E Preferred Stock may be less than set forth in the chart
depending on when conversion occurs. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(2)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Includes 507,375 shares of common stock issuable upon exercise of warrants issued to the purchasers of Series E Preferred Stock. The warrants are exercisable at $3.25 per common
share, at any time until December 31, 2007. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(5)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Mr. Mansour voluntarily converted 5,000 shares of Series E Preferred Stock into 15,679 common shares on June 24, 2003 and exercised a common stock warrant to purchase 7,500 common
shares at $3.25 per share on June 20, 2003. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:-6px"><FONT SIZE="1">&nbsp;</FONT></P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="3%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">(27)</FONT></TD>
<TD WIDTH="1%" VALIGN="top"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">Represents shares of common stock issued upon the exercise of warrants to purchase common shares (See Note 2). </FONT></TD></TR></TABLE> <P
STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">The date of this prospectus supplement is June 24, 2003. </FONT></P>
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