Greenhill & Co., Inc. ( NYSE:GHL ) is about to trade ex-dividend in the next four days. Typically, the ex-dividend date is one business day before the record date which is the date on which a company determines the shareholders eligible to receive a dividend. The ex-dividend date is important because any transaction on a stock needs to have been settled before the record date in order to be eligible for a dividend. Accordingly, Greenhill investors that purchase the stock on or after the 6th of December will not receive the dividend, which will be paid on the 21st of December.