X0303 4 2011-02-22 0 0001493761 Parametric Sound Corp PAMT 0001044321 MARXE AUSTIN W & GREENHOUSE DAVID M C/O SPECIAL SITUATIONS FUNDS 527 MADISON AVENUE, SUITE 2600 NEW YORK NY 10022 0 0 1 0 Common Stock 2011-02-22 4 P 0 1500000 0.5 A 3481411 I By Limited Partnerships Warrants 0.5 2011-02-22 4 P 0 1500000 0 A 2011-02-22 2016-02-22 Common Stock 1500000 1500000 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, LP (QP), Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, LP (TN) and Special Situations Technology Fund II, L.P. (T2), respectively. 1,594,686 shares of Common Stock are held by QP, 556,330 shares of Common Stock are held by PE, 180,378 shares of Common Stock are held by TN and 1,150,017 shares of Common Stock are held by T2. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, PE, TN and T2 is limited to the extent of his pecuniary interest. This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, LP (QP), Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, LP (TN) and Special Situations Technology Fund II, L.P. (T2), respectively. 690,000 Warrants are held by QP, 240,000 Warrants are held by PE, 75,000 Warrants are held by TN and 495,000 Warrants are held by T2. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, PE, TN and T2 is limited to the extent of his pecuniary interest. Austin W. Marxe 2011-02-24 David M. Greenhouse 2011-02-24