ATK News Release:

ATK to Announce Fiscal Year 2014 Financial Results

Apr 24, 2014

ARLINGTON, Va., April 24, 2014 /PRNewswire/ -- ATK (NYSE: ATK) will webcast its investor conference call on fiscal year 2014 financial results, which will be announced May 15, prior to the opening of the market. In addition to discussion of fourth quarter and year-end results, the Company expects to discuss its outlook and financial guidance and may discuss matters of strategy during the call. Conference call details are as follows:

This call is being webcast and can be accessed at ATK's website http://ir.atk.com/phoenix.zhtml?c=118594&p=irol-audioarchives.  Information about downloading Windows Media Player software, which is required to access the webcast, will be available on the website.

When:	9:00 a.m. EDT, Thursday, May 15, 2014
Who:	Mark DeYoung, President and Chief Executive Officer
	Neal Cohen, Executive Vice President and Chief Financial Officer
	Michael Pici, Director of Investor Relations

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 2075667. The recording will be available for one month after the call.

Institutional investors can access the call via the password-protected event management site, StreetEvents (www.streetevents.com).

ATK is an aerospace, defense and commercial products company with operations in 22 states, Puerto Rico and internationally.  News and information can be found on the Internet at www.atk.com, on Facebook atwww.facebook.com/atk or on Twitter @ATK.