X0203 3/A 2009-10-20 2009-10-20 0 0001421419 AGA Medical Holdings, Inc. AGAM 0001123639 WELSH CARSON ANDERSON & STOWE IX LP C/O WELSH, CARSON, ANDERSON & STOWE 320 PARK AVENUE, SUITE 2500 NEW YORK NY 10022 0 0 1 0 Common Stock 29775360 D Series A Preferred Stock 0 Common Stock 141209659 D All shares of Preferred Stock will automatically convert into Common Stock upon consummation of the Issuer's initial public offering. Includes shares that will be issued at the time of conversion of the Preferred Stock in payment of dividends on such Preferred Stock accrued and unpaid as of that date, assuming an IPO closing date of October 26, 2009 and based on an actual IPO price of $14.50 per share of Common Stock. The original Form 3 filed by the Reporting Person assumed an IPO price of $15.50 per share. /s/David Mintz, Attorney-in-Fact 2009-10-23