Twitter’s former head of product has left the company

After losing his role as head of Twitter’s Product team, Daniel Graf has officially left the company. In a tweet Friday afternoon, Graf thanked Twitter and wished the team good luck. The new head of product, Kevin Weil, tweeted some return appreciation, confirming the news.

Graf was the company’s head of product for the past six months until CEO Dick Costolo demoted him to a strategic initiatives role (although he kept the VP title) and promoted Twitter’s head of revenue products, Kevin Weil, to running the product team. When that announcement was made, Twitter said that Graf would be staying on, albeit with a different focus. A Wall Street Journal source told the publication he would run projects like geolocation services. Given that Graf led Google’s efforts with its Maps product, that fit his expertise.

It’s not clear what changed. Given that Twitter previewed a major product feature involving location-based tweets on its Analyst Call, its geolocation product is still in development. Graf’s experience would’ve been a major asset on the project.

Twitter declined to comment on Graf’s tweet.