X0201 42003-11-05 0001101215 ALLIANCE DATA SYSTEMS CORP ADS 0001212992 DENICOLA ANTHONY J C/O WELSH, CARSON, ANDERSON AND STOWE 320 PARK AVENUE, SUITE 2500 NEW YORK NY 10022 1010Common Stock2003-11-054S084750525.60D12494942IBy Welsh, Carson, Anderson & Stowe VII, L.P.Common Stock2003-11-054S028250125.60D3853049IBy Welsh, Carson, Anderson & Stowe VI, L.P.The Reporting Person is one of several general partners of the sole general partner of Welsh, Carson, Anderson & Stowe VII, 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 such limited partnership. 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.The Reporting Person is one of several general partners of the sole general partner of Welsh, Carson, Anderson & Stowe VI, 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 such limited partnership. 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.The Reporting Person also directly beneficially owns 48,444 shares and indirectly beneficially owns (i) 17,790,349 shares held by Welsh, Carson, Anderson & Stowe VIII, L.P.; (ii) 655,555 shares held by WCAS Capital Partners III, L.P.; and (iii) 268,398 shares held by WCAS Capital Partners II, L.P. The Reporting Person is one of several managing members or general partners of the respective sole general partners of such limited partnerships. 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 limited partnership. 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.Jonathan M. Rather, Attorney-in-Fact2003-11-05