Tesla Inc. Chief Executive Officer Elon Musk unloaded $5 billion of stock in the electric-car maker, shortly after holding a poll on Twitter over whether he should sell 10 percent of his massive stake in the company. The world's richest person so far has disposed of more than 4.5 million shares this week, according to regulatory filings. Those were his first sales in more than five years.
Musk, who frequently stokes controversy on Twitter, created a firestorm over the weekend with a survey asking whether he should sell part of his Tesla stake. While he portrayed his proposal as having to do with debate over billionaires avoiding taxes, the filings released Wednesday show some of the transactions were pre-arranged in mid-September -- weeks before the poll. He also didn't mention in the tweets that he has millions of stock options that must be exercised before next August, when they expire.
The poll resulted in a decisive vote for Musk to sell and sent Tesla shar…