X0303 4 2009-05-07 0 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 1 0 1 0 Stock Option (Right to Buy) 2.5 2009-05-07 4 A 0 8000 0 A 2019-05-07 Common Shares 8000 8000 D The exercisability of the Option Shares is contingent on shareholder approval of an amendment of the Company's 2006 Equity Incentive Plan (the Plan) to increase the number of shares authorized for issuance under the Plan. The Option Shares shall become fully-vested and exercisable on the date of the Company's 2010 Annual Shareholders' Meeting assuming satisfaction of the aforementioned contingency. Austin Marxe serves on the Board of Directors. Austin Marxe 2009-05-11 David Greenhouse 2009-05-11