Fastly (FSLY -30.03%) stock is getting crushed in Thursday's trading. The content delivery network company's share price was down 30% as of 3 p.m. ET, according to data from S&P Global Market Intelligence. Fastly published its fourth-quarter report after the market closed Wednesday, posting a beat on earnings but sales that fell significantly short of the market's expectations. Making matters worse, the company's guidance raised red flags -- and its chief architect sold shares. Fastly's earnings beat wasn't ...