X0202 4 2005-01-31 0 0000866121 ALLIANT TECHSYSTEMS INC ATK 0001186662 MELE MARK L ALLIANT TECHSYSTEMS 5050 LINCOLN DRIVE EDINA MN 55436-1097 0 1 0 0 Sr VP Corporate Strategy Common Stock 2005-02-01 4 M 0 2378 0 A 13034.3113 D Common Stock 2005-02-01 4 F 0 762 65.56 D 12272.3113 D Common Stock 2005-02-01 4 D 0 1616 65.56 D 10656.3113 D Common Stock 1901.2122 I By 401(k) Employee Stock Option (right to buy) 66.58 2005-01-31 4 A 0 10000 0 A 2008-01-31 2012-01-31 Common Stock 10000 10000 D Phantom Stock Units 2005-02-01 4 M 0 2378 65.56 D Common Stock 2378 4419 D Includes 1,385.3113 shares held in the Issuer's Employee Stock Purchase Plan as of December 31, 2004. Withheld to pay taxes. Disposition to the Issuer of Phantom Stock Units credited under the Issuer's Nonqualified Deferred Compensation Plan (the "Plan") as a result of the cancellation of the reporting person's previous deferral election under the Plan, which cancellation was approved by the Issuer's Board of Directors. 1-for-1 The Phantom Stock Units are payable in cash following the reporting person's termination of employment or such other date specified by the reporting person. However, the reporting person may elect to transfer funds into other investments accounts within the NQDCP from time to time. /s/Mark L. Mele 2005-02-01