Dick Costolo

• Jack Dorsey named permanent Twitter CEO

  Jack Dorsey, co-founder of Twitter and Square, has been named Twitter's permanent CEO.

  Money

  Oct 5, 2015
  
• Twitter is only considering CEO candidates who can make a ‘full-time’ commitment

  Jack Dorsey would have to give up his post at Square if he's to become CEO of Twitter.

  Tech

  Jun 22, 2015
  
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• Twitter’s trials and tribulations: What will it take keep it alive?

  Despite the buzz generated by thousands of chatty journalists, athletes and celebrities, Twitter has never turned a profit. Here are some of Twitter's most pressing challenges, along with possible fixes.

  Tech

  Jun 15, 2015
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• Dick Costolo steps down as Twitter CEO

  Twitter CEO Dick Costolo is stepping down and co-founder Jack Dorsey is temporarily taking the reins at the social networking service.

  Tech

  Jun 12, 2015
• Twitter COO Ali Rowghani resigns

  Twitter's chief operating officer, Ali Rowghani, has resigned from his post and won't be replaced.

  Tech

  Jun 12, 2014