Mayer, who only joined TiKTok from Disney in May, decided to leave the popular social media app after it became clear that he would likely not be running his own large company, but rather a division within a tech behemoth, according to CNBC.

TiKTok has been in talks to sell itself to Microsoft or Oracle to escape President Trump’s repeated threats to ban the app in the US amid concerns about the company’s ties to China. But Mayer was “excluded” from those negotiations, CNBC said.

Talks with Microsft were led instead by Zhang Yiming, the CEO of TikTok’s Beijing-based parent company ByteDance. who had a preexisting relationship with Microsoft. TikTok’s talks with Oracle were led by General Atlantic CEO Bill Ford, with Yiming only participating on those calls, CNBC said.

A deal could be reached within 48 hours, CNBC said.

Mayer was brought on to much applause in May amid criticisms from Trump and other lawmakers, including NY Sen. Chuck Schumer, that the app could share user’s personal information with the Chinese government.

And in a letter to employees, Mayer cited a “sharply changed” political environment as the reason for his decision.

“I have done significant reflection on what the corporate structural changes will require, and what it means for the global role I signed up for,” he wrote in a letter to employees. “Against this backdrop, and as we expect to reach a resolution very soon, it is with a heavy heart that I wanted to let you all know that I have decided to leave the company.”

Mayer’s letter arrived in the early morning hours of Thursday, August 27, a date that has in recent months gained a special importance on a subsection of the popular video app.

Referencing Aug. 27 has become a widespread inside joke on TikTok, with different users ascribing different meanings to the date, according to the New York Times’ Taylor Lorenz. While some who participated in the movement thought it could be related to astrology, others looked at it as an opportunity to gin up engagement on their posts.

Though Mayer resigned due to TikTok’s recent high-profile clashes with the Trump Administration and app’s looming sale, the fascination of TikTok users with the late August date has been a part of the subculture since well before President Trump said he wanted to ban the app.

Shares of Microsoft were up 2.7 percent Thursday morning following the news, while Oracle stock was down 1.3 percent.