These College Friends Wanted to Sell Better Food. Now, Their Company Is Publicly Traded. Sweetgreen co-founder Nicolas Jammet dives into how the brand got started, what setbacks it faced and how it’s using automation in its 250-plus locations. Previous Article She Started a Company From Her Phone — Now It Has More Followers Than The New York Times. How This Entrepreneur Turned Online Gossip Into a Media Empire Next Article Klarna Introduces a Debit Card, Allowing Users to 'Buy Now, Pay Later' on the Spot