Elon Musk continues to sell his Tesla (NASDAQ:TSLA) stock.

The founder and chief executive officer of the electric vehicle maker has sold 934,091 Tesla shares, according to financial filings with the U.S. Securities and Exchange Commission (SEC). The shares are worth $963.2 million U.S.

Musk, who is ranked the world’s richest person, also exercised stock options to purchase 2.17 million shares of Tesla, according to the SEC filing.

Tesla’s share price is down more than 1% in pre-market trading on news of the latest share sale, after falling 6% in the previous session.

Last month, Musk sold a total of $9.85 billion U.S. in Tesla stock including the $6.9 billion he sold the week of November 10 and another $1.9 billion he sold on November 15 and 16. Some of the shares were sold to satisfy a $15-billion tax bill related to an exercise of stock options.

Musk previously said he was likely to sell “a huge block” of his shares in the fourth quarter. Other current and former Tesla board members, including Robyn Denholm, Kimbal Musk, Ira Ehrenpreis and Antonio Gracias have also offloaded hundreds of millions of dollars worth of Tesla shares since the end of October.