A shareholder of the electric-vehicle maker has filed a lawsuit against Musk, accusing him of snubbing Elizabeth Warren and selling 10% of his stock.
The lawsuit was filed in the Delaware Court of Chancery.
According to the report, his litigation called for an investigation into whether Musk continues to use social media in a careless manner, in violation of the agreement with his securities lawyer.
It was concerned about the impact of his tweets on the stock.
The suit said that it was unclear who was reviewing Musk's statements after the company's last top general counsel departed in December and the most recent acting incumbent left in April.
The person who is responsible for overseeing Musk's tweets is not currently employed by the company.
Musk asked if he should sell 10% of his stock. As of December 18, Musk had sold over 12 million shares of his company's stock. He would have to sell 4.1 million more shares to reach 10%.
Musk's comments suggested he was going to sell large chunks of stock to cover tax obligations for exercising options that are due in August next year.
Musk began selling his shares on November 8. The company's shares are down.
Musk continues to post on social media on matters that are material to the company and its stockholders, and which have an impact on the stock price.
The suit takes aim at Musk's recent feud with Elizabeth Warren. The billionaire insulted the Massachusetts Democrat when she criticized his tax-paying habits.
"You remind me of when I was a kid and my friend's angry mom would just randomly yell at everyone," Musk said.
The lawsuit doesn't list Musk as a defendant.
Under a law that gives shareholders the right to inspect corporate documents, it seeks access to internal documents fromTesla. The suit said there was a "credible basis to believe" that the company was being mismanaged.
The company didn't respond to Insider's request for comment.
