Corporate insiders are selling stock at increasing levels this year ($17.5 billion in May and June, according to TrimTabs Investment Research). As the same time corporate buyback announcements are at record levels, averaging $5.1 billion daily this year, far greater than the previous record of $3.2 billion daily in 2007. Is this a case of insiders violating their fiduciary responsibility by using corporate cash to enrich themselves by engineering stock price increases and artificially boosting earnings via buybacks? That’s a question the SEC is asking. What’s also worrisome about this phenomenon is that the insiders who are selling could well be signaling they have little confidence in future earnings growth. Which is why large insider selling often is a contrarian signal; and buybacks a temporary bandage. Take Harley Davidson (HOG), which used a debt offering to buy back stock. It didn’t work. Its stock has dropped 20% amid fiscal disarray, and more recently retaliatory tariffs from the European Union.