Elon Musk says the Securities and Exchange Commission wants him to pay a penalty or face charges involving what he disclosed — or failed to disclose — about his purchases of Twitter stock before he bought the social media platform in 2022.

Elon Musk shared that the Security and Exchange Commission issued a "settlement demand" in a long-running probe of his purchase of the social media platform now known as X.

The mercurial entrepreneur took to his own social media platform X—whose purchase attracted the regulator's attention—to air his grievances.