Chinese ride-hailing company Didi Global Inc said in a filing that finishing a planned US delisting is a must before it can complete a cybersecurity review and resume its normal operations.

The filing came after Beijing-based Didi, the country's largest ride-hailing company, said earlier in the year that it will hold an extraordinary general meeting on May 23 to vote on its delisting plans in the US.

Shortly after Didi's $4.4 billion IPO in late June, China's Cyberspace Security Review Office said it had launched a cybersecurity probe into the company to protect national security and public interest in accordance with the nation's laws.

In Thursday's filing, Didi said it had already made rectifications to comply with the review, such as improving internal management mechanisms for data security.

But it must also finish a planned delisting from the New York exchange for the review to be completed, it added.

Didi has been unable to register new users since the regulator began its review.