| SC 13G/A | 2012-02-10 | NORRIS ELWOOD G | LRAD Corp | 2,744,995 | 8.3% | EDGAR |
| SC 13G | 2011-04-05 | Manatuck Hill Partners, LLC | LRAD Corp | 1,951,122 | 6.4% | EDGAR |
| SC 13G | 2011-02-11 | Brown Thomas R | LRAD Corp | 1,635,734 | 5.1% | EDGAR |
| SC 13G | 2011-01-24 | NORRIS ELWOOD G | LRAD Corp | 4,850,624 | 5.1% | EDGAR |
| SC 13G/A | 2010-02-12 | MARXE AUSTIN W & GREENHOUSE DAVID M | AMERICAN TECHNOLOGY CORP /DE/ | 3,985,271 | 12.7% | EDGAR |
| SC 13G/A | 2009-02-13 | MARXE AUSTIN W & GREENHOUSE DAVID M | AMERICAN TECHNOLOGY CORP /DE/ | 4,717,320 | 14.6% | EDGAR |
| SC 13G/A | 2007-02-14 | MARXE AUSTIN W & GREENHOUSE DAVID M | AMERICAN TECHNOLOGY CORP /DE/ | 4,825,920 | 15.4% | EDGAR |
| SC 13G/A | 2006-09-11 | MARXE AUSTIN W & GREENHOUSE DAVID M | AMERICAN TECHNOLOGY CORP /DE/ | 4,765,280 | 15.6% | EDGAR |
| SC 13G | 2006-02-14 | MARXE AUSTIN W & GREENHOUSE DAVID M | AMERICAN TECHNOLOGY CORP /DE/ | 2,220,737 | 8.8% | EDGAR |