Prospectus excerpt:  We are offering 1,500,000 shares of our 4.75% Mandatory Convertible Preferred Stock, Series A, without par value (“Mandatory Convertible Preferred Stock”). Dividends on the Mandatory Convertible Preferred Stock will be payable on a cumulative basis when, as and if declared by our board of directors at an annual rate of 4.75% on the liquidation preference of $1,000 per share. We may pay declared dividends in cash or, subject to certain limitations, in shares of our common stock, par value $0.01 per share, or by delivery, at our election, of any combination of cash and shares of our common stock on January 15, April 15, July 15 and October 15 of each year, commencing on July 15, 2019, and to, and including, April 15, 2022.