| Date | Event |
| 4-Nov-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Change in Directors or Principal Officers |
| 9-Oct-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements |
| 3-Aug-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 10-Q, Quarterly Report |
| 14-Jul-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements |
| 12-May-09 | Price hit new 52-week high ($2.87) |
| 11-May-09 | Price hit new 52-week high ($2.84) |
| 1-May-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Change in Directors or Principal Officers |
| 30-Apr-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 10-Q, Quarterly Report |
| 30-Apr-09 | Price hit new 52-week high ($2.62) |
| 9-Apr-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements |
| 5-Feb-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 10-Q, Quarterly Report |
| 9-Jan-09 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements |
| 30-Dec-08 | Price hit new 52-week low ($0.30) |
| 10-Dec-08 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Change in Directors or Principal Officers |
| 4-Dec-08 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 10-K, Annual Report |
| 10-Nov-08 | AMERICAN TECHNOLOGY CORP /DE/ Files SEC form 8-K, Change in Directors or Principal Officers |