New York • Twitter's chief operating officer, Ali Rowghani, has resigned from his post and won't be replaced as CEO Dick Costolo seeks more direct involvement with the company's engineering and product teams.
Rowghani joined Twitter in 2010 as chief financial officer and became COO two years later. Before that, he served as CFO at Pixar Animation Studios for nine years.
Twitter Inc. said in regulatory filing Thursday that Rowghani's responsibilities will be shifted to other executives. It did not give a reason for his departure. With the shift, Twitter joins other tech companies such as Google, Yahoo, Apple and Netflix that do not have a COO. Facebook's Sheryl Sandberg is a notable exception.