Jack Dorsey, 40, has served as the Chief Executive Officer of Twitter, Inc., a developer and provider of mobile communication applications, since 2015 and as Co-Founder and Chief Executive Officer of Square, Inc., a provider of payment processing services, since 2009 and as Chairman of the Board of Square since 2010. He also served as President and Chief Executive Officer of Twitter from 2007 to 2008, and as the Chairman of the Board of Twitter from 2008 to 2015. He has been a director of Twitter since 2007, a director of Square, Inc. since 2009, and a Director of the Company since 2013.


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