The Securities and Exchange Commission is preparing “numerous counts” against Elon Musk, according to a letter from his lawyer that Musk posted to X. It has also “reopened an investigation into Neuralink.

The artificial intelligence start-up argues that Mr. Musk is trying to hamstring its business as he builds a rival company.

The Musk Foundation gave $100,000 to a libertarian think tank in Utah. But for the third year in a row, Elon Musk’s charitable foundation did not give away enough of its money.