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Costolo will reportedly relinquish his seat on the board of directors once a new full-time CEO is found, or by year's end.
Twitter CEO Dick Costolo is out after months of disappointing investors. Twitter co-founder Jack Dorsey becomes interim CEO on July 1.
Twitter CEO Dick Costolo says he's not worried as questions resurface about his job after company's disappointing first-quarter earnings.
The microblogging service's chief is taking personal responsibility for the platform's slow response to user abuse and harassment, according to memos obtained by The Verge.
Despite Twitter’s stock plummet, CEO Dick Costolo’s job seems safe -- for now. But he needs to explain his strategy better.
Dorsey tweets that he wants to be a small part of something bigger in revealing gift worth $197 million.
One of Twitter's co-founders has come back to help the troubled social-networking company. Seen as part artist, part visionary, the question facing Dorsey now is whether he can turn the company around.
From nuggets of entrepreneurial wisdom to insights on Twitter's genesis, Dorsey, just renamed CEO, has said some intriguing things over the years.
Jack Dorsey is now CEO of both Twitter and Square. Running one big company is tough. Now he has two.
The microblogging service will name co-founder and interim CEO Jack Dorsey as its new chief this week, according to a report. His first job: getting more people to tweet.