Amazon had barely joined the $3 trillion club when Jeff Bezos placed a $4 billion stock sale under the market’s microscope. The Amazon founder and executive chair filed to sell 15 million shares worth roughly $4.1 billion, according to CNBC’s report on the disclosure. Bezos Files to sell 15 million Amazon sharesBezos filed a Form 144 notifying the US Securities and Exchange Commission of a proposed sale involving 15 million Amazon shares. Amazon shares had gained more than 15% on Friday and another 5% on Monday after the company reported stronger-than-expected second-quarter results. Amazon has approximately 10.8 billion shares outstanding, while Bezos held about 881 million shares following his most recently disclosed transactions with the SEC.