Twitter Appoints Leslie Berland as CMO

Twitter has appointed Leslie Berland, a senior global marketer at American Express, as its new CMO.

Berland's hire comes after a week of executive shuffling for the social media company, which has lost several top executives including head of media Katie Jacobs Stanton.

Berland will be charged with growing the Twitter brand, something CEO Jack Dorsey has said is a priority for the company as it seeks to jump start stalled user growth.

Prior to joining Twitter, Berland was executive vp global advertising, marketing and digital partnerships at American Express, where she worked for 11 years.

Dorsey tweeted about the hire on Tuesday morning.