|When:||9:00 a.m. Eastern Time, Thursday, August 4, 2011.|
|Who:||Mark DeYoung, President and Chief Executive Officer|
|John Shroyer, Senior Vice President and Chief Financial Officer|
|Jeff Huebschen, Director, Investor Relations|
ATK (Alliant Techsystems) (NYSE:ATK) will webcast its investor conference call on fiscal year 2012 first quarter financial results, which will be announced August 4, prior to the opening of the market. In addition to discussion of the quarterly results, the Company may discuss its outlook and financial guidance for future periods during the call. Conference call details are as follows: This call is being webcast by CCBN and can be accessed at ATK’s web site at www.atk.com, Investor Relations; Investor Information; Webcasts. Information about downloading Windows Media Player software, which is required to access the webcast, will be available on the website.
Telephone recording: For those who cannot participate in the live webcast, a telephone recording of the conference call will be available. The telephone number is 719-457-0820, and the confirmation code is 6429443. The recording will be available for one month after the call.