Genasys Inc. — Director's Dealing 2009

Sep 18, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TECHNOLOGY CORP /DE/ (atco)
CIK: 0000924383
Period of Report: 2009-06-16

Reporting Person: MARXE AUSTIN W & GREENHOUSE DAVID M (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-09-16	Common Stock	S	150000	$2.0708	Disposed	3299081	Indirect
2009-09-16	Common Stock	S	1900	$2.25	Disposed	3297181	Indirect
2009-09-16	Common Stock	S	100000	$2.298	Disposed	3197181	Indirect

Footnotes

F1: This is a joint filing by Austin W. Marxe (Marxe) & David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, L.P. (QP), Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, LP (Tech) & Special Situations Technology II, Fund, L.P. (Tech II), respectively. 1,459,791 shares of Common Stock are held by QP, 510,425 shares of Common Stock are held by PE, 170,038 shares of Common Stock are held by Tech and 1,056,927 shares of Common Stock are held by Tech II. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, PE, Tech, and Tech II is limited to the extent of his pecuniary interest.