Filed pursuant to Rule No. 424(b)(3)
File Number 333-99675
PROSPECTUS SUPPLEMENT NO. 6
(to Prospectus dated February 6, 2003, Prospectus Supplement No. 1 dated
February 7, 2003,
Prospectus Supplement No. 2 dated April 8, 2003, Prospectus Supplement No. 3
dated May 7, 2003,
Prospectus Supplement No. 4 dated June 13, 2003 and Prospectus Supplement No. 5
dated June 27, 2003)
4,076,470 SHARES
AMERICAN TECHNOLOGY CORPORATION
COMMON STOCK
This prospectus supplement supplements our prospectus dated February 6,
2003, Prospectus Supplement No. 1 dated February 7, 2003, Prospectus Supplement
No. 2 dated April 8, 2003, Prospectus Supplement No. 3 dated May 7, 2003,
Prospectus Supplement No. 4 dated June 13, 2003 and Prospectus Supplement No. 5
dated June 27, 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 supplements listed above.
AMENDMENT TO SELLING STOCKHOLDER TABLE
The information relating to Michael Spencer in the first table of
selling stockholders included in the prospectus is hereby amended as follows:
TOTAL SHARES OF
COMMON COMMON COMMON COMMON COMMON MAXIMUM COMMON
STOCK STOCK STOCK STOCK STOCK NUMBER STOCK
UNDERLYING UNDERLYING UNDERLYING UNDERLYING BENEFICIALLY OF BENEFICIALLY
CONVERTIBLE COMMON OUTSTANDING SERIES D COMMON OWNED SHARES OWNED
SUBORDINATED STOCK COMMON PREFERRED STOCK BEFORE OFFERED AFTER
SELLING STOCKHOLDER NOTE WARRANT STOCK STOCK WARRANT OFFERING HEREBY OFFERING
(1) (2) (3) (4) (5) (6) (7)
NAME NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER %
---- ------ ------ ------ ------ ------ ------ ------ ------ -
Michael Spencer -- -- 11,922(18) - 11,000 96,209 22,922 89,000 *
(3) Represents shares of common stock issued upon the conversion of an
aggregate of 185,400 shares of Series D Preferred Stock.
(4) Represents shares of common stock issuable upon the conversion of an
aggregate of 50,000 shares of Series D Preferred Stock beneficially
owned by such persons assuming the conversion price is $2.00 per share
and the shares are held to the end of their term, March 31, 2006. The
conversion value of the Series D Preferred Stock is convertible one or
more times into fully paid shares of common stock at a conversion price
which is the lower of (i) $4.50 per share or (ii) 90% of the volume
weighted average market price for the five days prior to conversion,
but in no event less than $2.00 per share, subject to adjustment. The
conversion value of the Series D Preferred Stock is the original
purchase price, increased by 6% per year from May 3, 2002. The shares
of Series D Preferred Stock could not be converted at a conversion
price less than $4.50 per share prior to December 31, 2002. The actual
number of shares of common stock issuable upon conversion of the Series
D Preferred Stock may be less than that set forth in the chart
depending on when conversion occurs.
(18) Mr. Michael Spencer voluntarily converted 5,000 shares of Series D
Preferred Stock into 11,922 common shares effective July 23, 2003. All
other share ownership information for the selling stockholder is as of
January 15, 2003.
-------------------
The date of this prospectus supplement is September 4, 2003.