<blockquote>Jana's demand was disclosed about three months after the Canadian deal was announced. By pulling the plug on Chicago, Safeway could not only satisfy Jana, but also generate a $400 million to $450 million tax benefit. It could then use that money to offset gains from the Canadian sale.</blockquote>
via <a href="http://articles.chicagotribune.com/2013-12-22/business/ct-biz-1222-confidential-dominicks-2-20131222_1_jana-partners-safeway-activist-shareholders">Did Wall Street firm seal Dominick's fate? - Chicago Tribune</a>.