Elon Musk has been charged by a Twitter Inc. shareholder who state the Tesla Inc. CEO’s delay in reveals his ownership of more than 5% of the social media company affectedly kept his share price cheap.

Marc Bain Rasella charged Musk for securities cheating in Manhattan federal court on Tuesday, stating that Musk was required to reveal his ownership to the SEC by March 24. Musk’s delay in filing the disclosure allowed him to purchase more shares at a lower rates and misled Twitter Sales sellers out of higher profits, Rasella claims.

Musk didn’t quickly respond to a request for comment. Twitter rejected to comment on the lawsuit.

The investor told that when Musk filed the form disclosing his involvement with Twitter, the company’s shares rise 27%, from $39.31 on April 1 to $49.97 on April 4.

Rasella seeks to speak for a class of investors who sold shares of Twitter from March 24 to April 1.

The case is Rasella v. Musk, 22-cv-03026, US District Court, Southern District of New York (Manhattan).