ISIL Supporters Threaten Twitter's Jack Dorsey & Facebook's Mark ZuckerbergA new video allegedly created by Islamic State supporters is going after Facebook's Mark Zuckerberg and Twitter's Jack Dorsey.
Visa Buys Nearly 10 Percent Stake In SquareVisa is now a major shareholder in Square, the Bay Area-based mobile payment services company co-founded and led by Jack Dorsey.
Twitter Parts With 4 Key Execs In Latest Sign Of TurmoilFour of Twitter's key executives are leaving the company in an exodus that has escalated the uncertainty facing the messaging service as it struggles to broaden its audience and lure back disillusioned investors.
Square Stock Soars 45 Percent In 1st Day Of TradingSquare bounced back in its stock market debut Thursday after the once-hot mobile payments service slashed the price of its initial public offering to get the deal done.
Square Discounts Stock To $9 A Share To Complete IPOMobile payments processor Square had to sell its stock at a deep discount to complete its initial public offering, a concession signaling that investors are becoming wary of once-hot startups that haven't proven they can make money.
Square Boosts Expected IPO Value By 47 Percent In Rocky MarketSquare, the six-year-old company known for its white, cube-shaped credit and debit card readers that plug into smartphones, is boosting its planned initial public offering value by 47 percent in what has become a tough market for new companies trying to raise cash.
Twitter's Losses Mounting As It Struggles To Expand Audience Under Jack DorseyTwitter ended the period with a core audience of 307 million active users, an increase of just 3 million from June. That wasn’t much better than a gain of 2 million users in the previous quarter, a letdown that led to the departure of Twitter’s previous CEO, Dick Costolo.
Twitter CEO Gives Up $200M In Stock For Company EmployeesTwitter CEO Jack Dorsey is relinquishing stock worth more than $200 million so the messaging service can award the shares to its employees.
Ex-Microsoft CEO Says He's Taken 4 Percent Stake In TwitterLos Angeles Clippers owner and former Microsoft CEO Steve Ballmer has bought a 4-percent stake in Twitter, a vote of confidence in the struggling messaging company.
Twitter Slashes Jobs, Costs, Lays Off 336 EmployeesTwitter is laying off up to 336 employees, signaling CEO Jack Dorsey's resolve to slash costs while the company struggles to make money.
Twitter Gives Co-Founder Jack Dorsey A 2nd Chance As CEOTwitter is embracing Jack Dorsey as its CEO in hopes that its once-spurned co-founder can hatch a plan to expand the short messaging service's audience and end nearly a decade of financial losses.
Twitter Co-Founder Jack Dorsey Reportedly Becoming CEO For 2nd TimeTwitter may be about to end its three-month search for a new CEO where it started: with once-ousted co-founder Jack Dorsey running the short-messaging service.

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