X0306 4 2012-08-02 1 0001024520 WORLD HEART CORP WHRT 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 2012-08-02 4 D 0 6765732 0 D 0 I By Limited Partnerships Warrants 2.31 2012-08-02 4 D 0 2461825 0.0995 D 2010-10-19 2015-10-19 Common Stock 2461825 0 I By Limited Partnerships Warrants 4.9 2012-08-02 4 D 0 388350 0 D 2012-01-26 2015-01-26 Common Stock 388350 0 I By Limited Partnerships Disposed of pursuant to a merger agreement by and among the Issuer, Ocean Acquisition Holding Inc. and Heartware International, Inc. ("Heartware") in exchange for an aggregate of 16,312 shares of Heartware common stock having a market value of $89.79 per share (based on a ten day Heartware average stock price, ending on and including August 1, 2012). 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, L.P (QP), Special Situations Cayman Fund, L.P. (Cayman), Special Situations Private Equity Fund, LP (PE) and Special Situations Life Sciences Fund, L.P. (LS). 0 shares of Common Stock are owned by QP, 0 shares of CS are owned by Cayman, 0 shares of CS are owned by PE and 0 shares of CS are owned by LS. Marxe individually owns 0 shares of CS and Greenhouse individually owns 0 shares of CS. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, Cayman, PE, LS, Marxe and Greenhouse are limited to the extent of his pecuniary interest. These Warrants were cancelled in the merger in exchange for a cash payment of $0.0995 per Warrant share. 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, L.P (QP), Special Situations Cayman Fund, L.P. (Cayman), Special Situations Private Equity Fund, LP (PE) and Special Situations Life Sciences Fund, L.P. (LS). 0 Warrants are owned by QP, 0 Warrants are owned by Cayman, 0 Warrants are owned by PE and 0 Warrants owned by LS. The interest of Marxe and Greenhouse in the shares of Warrants owned by QP, Cayman, PE and LS are limited to the extent of his pecuniary interest. These Warrants were cancelled in the merger. Austin W. Marxe 2012-08-09 David M. Greenhouse 2012-08-09