X0303 4 2010-11-18 0001421419 AGA Medical Holdings, Inc. AGAM 0001413863 Lee Eric J. C/O WELSH, CARSON, ANDERSON & STOWE 320 PARK AVENUE, SUITE 2500 NEW YORK NY 10022 0 0 1 0 Common Stock 2010-11-18 4 U 0 21513988 D 0 I By Welsh, Carson, Anderson & Stowe IX, L.P. Common Stock 2010-11-18 4 U 0 1210197 D 0 I By WCAS Capital Partners IV, L.P. Common Stock 2010-11-18 4 U 0 12645 D 0 D Shares disposed of in connection with the acquisition of the Issuer by St. Jude Medical Inc., pursuant to the terms of which each share of Common Stock will be exchanged for cash and common stock of St. Jude Medical Inc., based on a price of $20.80 per share of Common Stock. The Reporting Person is a managing member of the respective sole general partners of Welsh, Carson, Anderson & Stowe IX, L.P. and WCAS Capital Partners IV, L. P. Pursuant to Instruction (4)(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by each such entity. The Reporting Person disclaims beneficial ownership of any securities, and any proceeds thereof; that exceed his pecuniary interest therein and/or that are not actually distributed to him. /s/David Mintz, Attorney-in-Fact 2010-11-22