Twitter’s Rowghani Steps Down as COO After Clash With CEO

Twitter Inc.’s Ali Rowghani resigned as chief operating officer after a power struggle over responsibilities, said people familiar with the matter, in the biggest executive exit since the microblogging company went public last year.

Rowghani, 41, wanted to keep control over Twitter’s product vision, as well as operations and corporate development, setting up a clash with Chief Executive Officer Dick Costolo, who decided to have more of those functions report to him, said the people, who asked not to be identified because the conversations were private.