He's just three months into the job, but TikTok CEO Kevin Mayer has already quit.
Mayer - who worked at Disney before joining the short video app in June - also acted as chief operating officer of TikTok's Chinese parent ByteDance.
The American businessman joined at a time when the company faced growing pressure from the Trump administration.
The U.S. government believes TikTok poses a national security risk and could share user data with Chinese authorities.
Trump has threatened to ban TikTok, and Microsoft and Oracle have both been in talks to buy the app's operations in North America, Australia and New Zealand.
The headwinds facing the app have now proven too much for Mayer.
In a statement released Wednesday (August 26), he said the political environment had 'sharply changed', and that he had reflected on the 'structural changes' the company would need to make.
In light of that, he decided to leave.
Mayer will be replaced by U.S. General Manager Vanessa Pappas on an interim basis.
ByteDance founder Zhang Yiming said they were 'moving quickly' to resolve the issues faced by the company.
Mayer's resignation also comes just days after TikTok sued the Trump administration.
That after the U.S. president signed an executive order that gave ByteDance 90 days to divest of TikTok's U.S. operations - or else face being banned from the country.