X0202 4 2005-05-03 0 0000866121 ALLIANT TECHSYSTEMS INC ATK 0001282990 DITTEMORE RONALD D ALLIANT TECHSYSTEMS 5050 LINCOLN DRIVE EDINA MN 55436-1097 0 1 0 0 Sr VP & President ATK Thiokol Common Stock 2005-05-03 4 A 0 2000 0 A 3363 D Common Stock 224.6953 I By 401(k) Restricted stock grant under the Issuer's 1990 Equity Incentive Plan which is subject to certain restrictions (including possible forfeiture). The amount reported includes 3,000 shares subject to certain restrictions (including possible forfeiture) applicable to restricted stock grants under the Issuer's 1990 Equity Incentive Plan and 363 shares held in the Issuer's Employee Stock Purchase Plan as of March 31, 2005. /s/Ronald D. Dittemore 2005-05-04