News + Filings Transactions Holdings
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MARXE AUSTIN W & GREENHOUSE DAVID M
> ATCO
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2009 | AMERICAN TECHNOLOGY CORP | ATCO | 3,197,181 | 0 | 4,732,000 | -927,000 | $1.48 |
| 09/30/2009 | AMERICAN TECHNOLOGY CORP | ATCO | 3,197,181 | -251,900 | 5,659,000 | -894,000 | $1.77 |
| 06/30/2009 | AMERICAN TECHNOLOGY CORP | ATCO | 3,449,081 | 0 | 6,553,000 | 4,001,000 | $1.90 |
| 03/31/2009 | AMERICAN TECHNOLOGY CORP | ATCO | 3,449,081 | -28,482 | 2,552,000 | -404,000 | $0.74 |
| 12/31/2008 | AMERICAN TECHNOLOGY CORP | ATCO | 3,477,563 | 0 | 2,956,000 | 1,043,000 | $0.85 |
| 09/30/2008 | AMERICAN TECHNOLOGY CORP | ATCO | 3,477,563 | -108,600 | 1,913,000 | -4,721,000 | $0.55 |
| 06/30/2008 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 6,634,000 | -1,220,000 | $1.85 |
| 03/31/2008 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 7,854,000 | -1,219,000 | $2.19 |
| 12/31/2007 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 9,073,000 | -4,554,000 | $2.53 |
| 09/30/2007 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 13,627,000 | 107,000 | $3.80 |
| 06/30/2007 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 13,520,000 | -753,000 | $3.77 |
| 03/31/2007 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 0 | 14,273,000 | 215,000 | $3.98 |
| 12/31/2006 | AMERICAN TECHNOLOGY CORP | ATCO | 3,586,163 | 3,586,163 | 14,058,000 | 14,058,000 | $3.92 |
| 09/30/2006 | AMERICAN TECHNOLOGY CORP | ATCO | 0 | -1,534,881 | 0 | -4,098,000 | |
| 06/30/2006 | AMERICAN TECHNOLOGY CORP | ATCO | 1,534,881 | -44,800 | 4,098,000 | -2,503,000 | $2.67 |
| 03/31/2006 | AMERICAN TECHNOLOGY CORP | ATCO | 1,579,681 | 149,901 | 6,601,000 | 1,868,000 | $4.18 |
| 12/30/2005 | AMERICAN TECHNOLOGY CORP | ATCO | 1,429,780 | -123,492 | 4,733,000 | -3,189,000 | $3.31 |
| 09/30/2005 | AMERICAN TECHNOLOGY CORP | ATCO | 1,553,272 | 1,432,025 | 7,922,000 | 7,225,000 | $5.10 |
| 06/30/2005 | AMERICAN TECHNOLOGY CORP | ATCO | 121,247 | 31,483 | 697,000 | -32,000 | $5.75 |
| 03/31/2005 | AMERICAN TECHNOLOGY CORP | ATCO | 89,764 | -564,494 | 729,000 | -3,033,000 | $8.12 |
| 09/30/2004 | AMERICAN TECHNOLOGY CORP | ATCO | 654,258 | 0 | 3,762,000 | -20,000 | $5.75 |
| 06/30/2004 | AMERICAN TECHNOLOGY CORP | ATCO | 654,258 | 0 | 3,782,000 | -111,000 | $5.78 |
| 03/31/2004 | AMERICAN TECHNOLOGY CORP | ATCO | 654,258 | 0 | 3,893,000 | 771,000 | $5.95 |
| 12/31/2003 | AMERICAN TECHNOLOGY CORP | ATCO | 654,258 | 0 | 3,122,000 | -836,000 | $4.77 |
| 09/30/2003 | AMERICAN TECHNOLOGY CORP | ATCO | 654,258 | 654,258 | 3,762,000 | 3,762,000 | $5.75 |
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