X0203 3 2010-10-14 0 0001024520 WORLD HEART CORP WHRT 0001444043 Camber Capital Management LLC 101 HUNTINGTON AVENUE FLOOR 25 BOSTON MA 02199 0 0 1 0 Common Stock 1639345 I See Footnote Warrants 2.31 2010-10-14 2015-10-14 Common Stock 1639345 I See Footnote Securities reported herein for Camber Capital Management LLC (the "LLC") represent Common Stock and Common Stock issuable upon the exercise of warrants beneficially owned and held of record by two private investment funds and one managed account for which the LLC serves as the investment manager Stephen DuBois is the managing member of the LLC and managing member of the general partners for each of the private investment funds. The LLC, private investment funds, managed account, general partners and Mr. DuBois (the "Reporting Persons") are each beneficial owners and have an address of 101 Huntington Avenue, Floor 25, Boston, MA 02199. The Reporting Persons disclaim beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the shares and warrants in which the Reporting Persons have no actual pecuniary interest therein. /s/ Stephen DuBois 2010-10-25