Sam 's Club , the CEO of Meet Rosalind Brewer , part of Walmart . Chemistry graduate now heads company worth a billion dollar . Two years later , the number of Sam 's Club stores has grown from 610 to 643 across the U.S. and Puerto Rico . Says 'honesty and integrity ' are integral to her career . Laying off one workers was 2,300 of toughest moments of her life .
Sam 's Club , the CEO of Meet Rosalind Brewer , part of Walmart . Chemistry graduate now heads company worth a billion dollar . Says 'honesty and integrity ' are integral to her career . Laying off one workers was 2,300 of toughest moments of her life .