Deming Xiao, EVP at Monolithic Power Systems (NASDAQ:MPWR), disclosed an insider sell on August 22, according to a recent SEC filing. What Happened: A Form 4 filing from the U.S. Securities and Exchange Commission on Thursday showed that Xiao sold 10,000 shares of Monolithic Power Systems. The total transaction amounted to $9,500,000. As of Friday morning, Monolithic Power Systems shares are up by 2.42%, currently priced at $930.51. All You Need to Know About Monolithic Power SystemsMonolithic Power Systems is an analog and mixed-signal chipmaker, specializing in power management solutions. Th…