Elon Musk is being sued by the U.S. Securities and Exchange Commission over his 2022 Twitter takeover. The agency alleges that the billionaire failed to disclose his ownership of Twitter stock in a timely manner, saving himself at least $150 million “at the expense of shareholders.”

It’s hard to fault a CEO who grows a company beyond $1 trillion in value. Elon Musk managed the feat by upending the automotive market with Tesla’s electric vehicles and extended its lead with broader battery power.