The founder of food delivery giant Meituan Wang Xing will donate shares worth $2.27 billion to his personal charity, a stock exchange filing late on Thursday showed, making him the latest Chinese tech billionaire to make such a gesture.

The donation of shares comes as Meituan and other so-called platform economy companies have come under the scrutiny of China’s anti-trust regulator, which announced a investigation into Meituan in April.

On Thursday, the market regulator warned Meituan and several other “sharing economy” companies over opaque pricing practices.

“The changes regarding Wang Xing’s interest in shares of Meituan represent a personal asset allocation decision that was made out of philanthropic considerations,” the company said in a statement. “This decision does not reflect any changes in his dedication to Meituan’s business.”

Wang will convert 57.319 million class A shares into class B shares and transfer the class B shares into the Wang Xing Fund, which promotes education and scientific research.

In April, tech giant Tencent, which Reuters has reported faces an antitrust penalty, pledged to invest $7.81 billion in environmental and social initiatives.