Whiting Petroleum Corp. - 2013-06-17

Exercised its right to convert all outstanding shares of its preferred stock. The company expects to convert 172,129 shares into 792,000 shares of common stock. Each share of preferred stock has a liquidation preference of $100 per share and converts into shares of common stock based on the current conversion price of $21.70815. Cede & Co. is the sole record holder.