In this paper, we investigate the timing, volume, and profitability of insider trading has changed over time corresponding to changes in the regulatory environment over the period 1986-2008. Consistent with increased regulatory scrutiny, we find that there has been a steady increase over time in...

This paper examines the influence of corporate governance systems on insiders' ability to profit from their information advantage and the ways through which corporate governance systems influence such ability. We find that corporate governance significantly reduces the profitability of insider...

We document insider trading activities of all companies listed on the NYSE, Amex, and Nasdaq exchanges during the 1975-1995 period. Insider trading is common, and in more than half the sample firms, there is at least some insider activity in a given year. In general, very little market movement...

Logic suggests that a link might exist between insider trades and share repurchases because of their potential to signal mispricing when market prices deviate from fair value; both events emanate from essentially the same set of decision makers. Using the overall repurchase sample, adding...