Walgreens really blew it on this one. The executives responsible for Theranos deal all got canned years ago for unrelated reasons.

NYT had an overview of Walgreen's struggle.

http://www.nytimes.com/2016/04/22/business/a-once-avid-ally-... "The Wall Street Journal reported that Walgreens was so eager to cement the relationship that it lent Theranos money, acquired warrants to buy Theranos stock and skipped its usual due diligence when evaluating a pharmacy partner."

"The Walgreens executives responsible for the Theranos deal, including Mr. Wasson, as well as the chief financial officer and the president of the company’s pharmacy unit, have all been replaced, forced out in 2014 by activist investors after Walgreens acquired the European drugstore chain Alliance Boots."