M became CFO of Monolithic Power Systems, Inc. (MPWR-$61.21) in 2011. Since 2004, MPS' $184.1 million spent on buybacks boosted its share price by about $6.54, roughly a 12.0% benefit. A fraction of that was earned on CFO M's watch.In October 2012, with MPS trading at $18.00, a Cashless...