U.S. Markets closed

Ali Rowghani out as Twitter chief operating officer

CNBC.com staff

Twitter (TWTR) on Thursday announced that Ali Rowghani has resigned from his position as the chief operating officer.

Rowghani will remain a Twitter employee and act as a strategic advisor to the chief executive. The company hasn't announced plans to name a new COO, and Rowghani's former responsibilities will be shares among top executives at the social media giant.

On Wednesday, Re/code reported that sources familiar with the company said top management had already made some moves to shift responsibility from Rowghani, who at one point was considered one of Twitter's most valuable assets.

Read MoreTwitter mulling shake up of top executives

Following the announcement, shares of Twitter traded lower prior to the opening bell. (Click here for the latest quote.) (TWTR)