Google cofounder Sergey Brin might pocket over $100 million by selling his Tesla stock, after plowing $500,000 into Elon Musk’s automaker before it went public Sergey Brin, an early Tesla investor, is set to sell his stake, The Wall Street Journal reported. He''s cashing out after Elon Musk reportedly had an affair with his wife. Musk has denied the claim. Brin could pocket over $100 million after investing more than $500,000 in Tesla before its IPO. Sergey Brin, an early Tesla investor, may be poised to pocket over $100 million by cashing out his stake in Elon Musk''s automaker. The Google cofounder and former Alphabet president has instructed his financial advisers to sell his personal positions in Musk''s companies, after the Tesla CEO had a brief affair with Brin''s wife that spurred Brin to file for divorce earlier this year, The Wall Street Journal reported on Sunday, citing people familiar with the situation. The Journal was unable to learn the size of Brin''s investments in Musk''s businesses, or whether he''s disposed of them already. Tesla and Alphabet didn''t immediately respond to requests for comment from Insider. Musk has dismissed claims of an affair as "total BS" on Twitter.