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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001193125-03-015170.txt : 20030630
<SEC-HEADER>0001193125-03-015170.hdr.sgml : 20030630
<ACCEPTANCE-DATETIME>20030630171026
ACCESSION NUMBER:		0001193125-03-015170
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20030630

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:		03765301

	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
<TEXT>
<HTML><HEAD>
<TITLE>Prospectus Supplement</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. 2 </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">(to Prospectus dated June 10, 2003 and Prospectus Supplement No. 1 dated
June 24, 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="3"><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="3"><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="3"><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. 2 supplements our prospectus dated June 10, 2003 and
Prospectus Supplement No. 1 dated June 24, 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 the prior prospectus supplement listed above. </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></B><B><I>Amendments to Selling Stockholder Table</I></B><B> </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.&nbsp;&nbsp;&nbsp;&nbsp;The information relating to NGHK Holdings, LLC 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="41%" 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="94" SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="4%" ><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="4%" ><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="4%" ><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="4%" ><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&nbsp;Before<BR>Offering</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Maximum<BR>Number&nbsp;of<BR>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="4%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3" ALIGN="center"><FONT FACE="Times New Roman" SIZE="1"><B>Shares&nbsp;of&nbsp;Common<BR>Stock&nbsp;Beneficially<BR>Owned<BR>After Offering</B></FONT><BR><HR SIZE="1" NOSHADE COLOR="#000000"></TD>
<TD VALIGN="bottom" ><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" WIDTH="41%" 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="4%" ><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="4%" ><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="4%" ><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)</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="4%" ><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="4%" ><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="4%" ><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="4%" ><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>
<TD VALIGN="bottom" ><FONT SIZE="1">&nbsp;</FONT></TD></TR>
<TR BGCOLOR="#cceeff">
<TD VALIGN="top" WIDTH="41%"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT FACE="Times New Roman" SIZE="2">NGHK Holdings, LLC</FONT></P></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="6%"><FONT FACE="Times New Roman" SIZE="2">461,625</FONT></TD>
<TD VALIGN="bottom" WIDTH="4%" ><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="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="6%"><FONT FACE="Times New Roman" SIZE="2">112,500</FONT></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="6%"><FONT FACE="Times New Roman" SIZE="2">647,695</FONT></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD ALIGN="right" COLSPAN="1" VALIGN="bottom" WIDTH="2%"><FONT FACE="Times New Roman" SIZE="2">547,125</FONT></TD>
<TD COLSPAN="1" NOWRAP VALIGN="bottom" WIDTH="1%"><FONT SIZE="2">(18)</FONT></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" WIDTH="6%"><FONT FACE="Times New Roman" SIZE="2">299,041</FONT></TD>
<TD VALIGN="bottom" WIDTH="4%" ><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD ALIGN="right" COLSPAN="1" VALIGN="bottom" WIDTH="1%"><FONT FACE="Times New Roman" SIZE="2">1.9</FONT></TD>
<TD COLSPAN="1" NOWRAP VALIGN="bottom" WIDTH="1%"><FONT SIZE="2">%</FONT></TD></TR>
</TABLE> <P STYLE="margin-top:0px;margin-bottom:0px"><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 395,235 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">(18)</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">Kwok Hung Ng is believed by us to have sole voting and investment power with respect to the securities held. Includes warrants exercisable for 147,000 common shares other than those
covered by this prospectus and common shares issuable on conversion of $250,000 principal amount of convertible subordinated promissory notes. 75,000 shares of Series E Preferred Stock are owned of record by the selling stockholder. The selling
stockholder exercised common stock warrants to purchase 112,500 common shares at $3.25 per share on June 27, 2003. </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 27, 2003. </FONT></P>
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