X0201 4 2003-07-28 0 0001114200 AMERICAN MEDICAL SYSTEMS HOLDINGS INC AMMD 0000929408 WARBURG PINCUS & CO 466 LEXINGTON AVENUE NEW YORK NY NY 100173147 0 0 0 1 Sole GP of WPEP Voting Common Stock 2003-07-28 4 J 0 1658296 0 D 7854168 I See footnotes. Non-Voting Common Stock 2003-07-28 4 J 0 341700 0 D 0 I See footnote. Warburg, Pincus Equity Partners, L.P. distributed an aggregate of 1,999,996 shares to its limited partners. The stockholder is Warburg, Pincus Equity Partners, L.P., including three affiliated partnerships ("WPEP"), Warburg, Pincus & Co. ("WP") is the sole general partner of WPEP. WPEP is managed by Warburg Pincus LLC (formerly known as E.M. Warburg, Pincus & Co., LLC). All shares indicated as owned by the reporting person are included because of its affiliation with the Warburg Pincus entities. The reporting person may be deemed to have an indirect pecuniary interest (within the meaning of Rule 16a-1 under the Securities Exchange Act of 1934) in an indeterminate portion of the shares owned by WPEP. The reporting person disclaims beneficial ownership of all shares owned by the Warburg Pincus entities. Not applicable. Not applicable. /s/ Scott A. Arenare 2003-07-28