X0202 4 2005-08-31 1 0001101052 MYOGEN INC MYOG 0001237288 ALSOP STEWART II 1119 ST. PAUL STREET BALTIMORE MD 21202 0 0 0 1 Former 10% Owner Common Stock 2005-08-31 4 J 0 700000 D 1841089 I See Note 2 Common Stock 2005-08-31 4 J 0 6999 A 6999 I See Note 3 Common Stock 2005-08-31 4 J 0 1300000 D 2903689 I See Note 5 Common Stock 2005-08-31 4 J 0 12992 A 12992 I See Note 6 Pro-rata distribution by New Enterprise Associates 9, Limited Partnership to its partners for no consideration. The Reporting Person was a general partner of NEA Partners 9, Limited Partnership, which is the sole general partner of New Enterprise Associates 9, Limited Partnership ("NEA 9"), the beneficial owner of the securities. The Reporting Person disclaims beneficial ownership of the securities held by NEA 9, except to the extent of his actual pecuniary interest therein. The Reporting Person was a general partner of NEA Partners 9, Limited Partnership ("NEA Partners 9"), the beneficial owner of the securities. The Reporting Person disclaims beneficial ownership of the securities held by NEA Partners 9, except to the extent of his pecuniary interest therein. Pro-rata distribution by New Enterprise Associates 10, Limited Partnership to its partners for no consideration. The Reporting Person was a general partner of NEA Partners 10, Limited Partnership, which is the sole general partner of New Enterprise Associates 10, Limited Partnership ("NEA 10"), the beneficial owner of the securities. The Reporting Person disclaims beneficial ownership of the securities held by NEA 10, except to the extent of his pecuniary interest therein. The Reporting Person was a general partner of NEA Partners 10, Limited Partnership ("NEA Partners 10"), the beneficial owner of the securities. The Reporting Person disclaims beneficial ownership of the securities held by NEA Partners 10, except to the extent of his pecuniary interest therein. Louis S. Citron, attorney-in-fact 2005-08-31