Twitter announced Monday that Jack Dorsey will be staying on as the company’s full-time CEO.
Dorsey was named interim CEO after Dick Costolo stepped down from his post in July. According to Twitter’s SEC filing, the board made the decision to keep Dorsey as CEO permanently on Wednesday.
This isn’t the first time Dorsey has led Twitter. He cofounded Twitter with Biz Stone and Evan Williams back in 2006, but left the company after he was ousted as CEO in 2008. He returned in 2010 to lead product, but ended up scaling back his responsibilities.
He will stay on as CEO of Square, the mobile payments company he founded in 2010, while managing new responsibilities at Twitter.
Dorsey first become a billionaire in 2012 and is now worth an estimated $US2.2 billion.
Rebecca Borison wrote an earlier version of this story.
Dorsey began programming while attending Bishop DuBourg High School in St. Louis. At age 15, Dorsey wrote dispatch software that is still used by some taxi companies.
When he wasn't checking out specialty electronics stores or running a fantasy football league for his friends, Dorsey frequently attended punk rock concerts.
Dorsey and his cofounders Evan Williams and Biz Stone bought the Twitter domain name for roughly $7,000, and Dorsey took out his nose ring to look the part of CEO. He was 30 years old.
But Dorsey was already on his way out from Twitter. Williams had taken over as CEO, and Dorsey transitioned to chairman of Twitter's board. Dorsey immediately got started on some new projects. He invested in Foursquare and launched a payments startup called Square that lets small business owners accept credit card payments through a smartphone attachment.
Dorsey does not often flaunt his billions and reportedly even takes the bus to work. He told the New Yorker he uses the commute to do market research: 'I saw the rise of Instagram here. I saw the rise of Vine and Snapchat, and how many more people were using Facebook versus Twitter, and it's amazing. Like, look -- anyone reading magazines, newspapers, books?'
He does own a BMW 3 Series, but he doesn't drive it all that often. 'And now he's able to say, like, 'The BMW is the only car I drive, because it's the best automotive engineering on the planet,' or whatever,' Twitter cofounder Biz Stone told the New Yorker in 2013.
In the early days of Twitter, Dorsey aspired to be a fashion designer, and he's still considered by many to be one of the most stylish men in tech. He regularly dons leather jackets and slim suits by Prada and Hermès, as well as Dior Homme reverse-collar dress shirts, a sort of stylish take on the popped collar.
He told the New Yorker he has a strict schedule for eating out. On Monday, he goes to Aziza, on Tuesday he goes to Zuni, on Wednesday it's Mint, and on Thursday it's Tiburon. 'I'm always looking for the one thing for me, rather than tasting everything I can,' he said.
Dorsey frequently travels all over the world and shares his photos with his more than 3 million Twitter followers.
He also reportedly paid $9.9 million for this seaside house on El Camino Del Mar in the exclusive Seacliff neighbourhood of San Francisco.
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