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Twitter COO resigns over pared-down role

Ali Rowghani departs after four years with microblogging firm

IT Business, Financial news, Twitter Incorporation

Twitter's Ali Rowghani has resigned from his role as chief operating officer, Bloomberg reported, attributing the decision to friction between Rowghani and chief executive Dick Costolo over areas of responsibility.

The exit marks the most senior departure since the microblogging firm went public in November. Rowghani played a key role in the IPO, and was entrusted with growing the user base, but a slowdown in growth coupled with a reportedly unpopular sale of his Twitter stock has led to building tensions between Rowghani and other management, according to a re/code report last week.

Citing knowledgeable insiders, re/code said Rowghani had been overseeing the product division until product VP Daniel Graf was hired in April; Graf reports directly to CEO Dick Costolo.

Rowghani, 41, joined Twitter just over four years ago as chief financial officer. He moved from Disney-owned animation company Pixar where he was also CFO. He was promoted to COO in late 2012.