Mashable founder Pete Cashmore and 304 Park Avenue South

... an insider familiar with the search process told The Real Deal . Mashable would likely look to remain in the Gramercy Park neighborhood, or move to the nearby Flatiron District, the source added. Representatives for Mashable and SL Green couldn't ...

http://therealdeal.com/blog/2013/11/26/mashable-eyeing-new-nyc-headquarters/