TeslaAccording to Friday’s regulatory filings, Elon Musk sold 639,737 shares of his trust in electric vehicle company Tesla on Thursday, for a total value of $687 million.

It comes just days after Musk and his trust have sold $5 billion worth stock.

Musk, who was a millionaire before the sale of his initial shares, asked millions more. TwitterHe asked his followers whether they should buy 10% of Tesla stock. They responded that he would track the results. About 58% of respondents supported the poll. Some shares were also sold to meet tax obligations arising from the exercise of stock options.

The news is still developing. Please keep checking back to see the latest.