Alliant Techsystems Announces Stock Split

Minneapolis, Nov. 2, 2000 – ATK (Alliant Techsystems, NYSE: ATK) said its board of directors has approved a 3-for-2 split of its common stock payable Nov. 27 to shareholders of record on Nov. 10. As a result of the split, shareholders will receive one additional share of stock for every two shares they hold on the record date.

ATK currently has approximately 9.2 million shares of common stock outstanding. That number will increase to approximately 13.8 million shares as a result of the stock split.

“This ATK board action acknowledges the company’s strong performance and recognizes its prospects for future growth,” said Paul David Miller (PDM), chairman and chief executive officer. “The timing is correct for this split and we are pleased to enhance trading liquidity.”

ATK is a $1.1 billion aerospace and defense company with leading market positions in munitions, smart weapons and precision capabilities, propulsion, and composite structures. The company, which is headquartered in Hopkins, Minn., employs approximately 6,400 people and has three business segments: Conventional Munitions, Aerospace, and Defense Systems. ATK news and information can be found on the Internet at www.atk.com.