The lawsuit is seeking to be certified as a class action representing Twitter shareholders who sold shares between March 24 and April 4, a process that could take a year or more.
Musk spent about US$2.6 billion on Twitter stock — a fraction of his estimated wealth of US$265 billion, the largest individual fortune in the world. In a regulatory filing yesterday, Musk disclosed he may increase his stake after backing out of an agreement reached last week to join Twitter's board of directors.
Jacob Walker, one of the lawyers that filed the lawsuit against Musk, told The Associated Press that he hadn't reached out to the Securities and Exchange Commission about Musk's alleged violations about the disclosure of his Twitter stake. "I assume the SEC is well aware of what he did," Walker said.
An SEC spokesperson declined to comment.
The SEC and Musk have been wrangling in court since 2018 when Musk and Tesla agreed to pay a US$40 million fine to settle allegations that he used his Twitter account to mislead investors about a potential buyout of the electric car company that never materialised. As part of that deal, Musk was supposed to obtain legal approval for his tweets about information that could affect Tesla's stock price — a provision that regulators contend he has occasionally violated and that he now argues unfairly muzzles him.
Musk didn't immediately respond to a request for comment posted on Twitter, where he often shares his opinion and thoughts. Alex Spiro, a New York lawyer representing Musk in his ongoing dispute with the SEC, also didn't immediately respond to a query from The Associated Press.