This prospectus relates to the resale, from time to time, by the selling securityholders named herein (the "Selling Securityholders"), or their pledgees, donees, transferees, or other successors in interest of $125,000,000 aggregate principal amount of 7.50% Senior Unsecured Convertible Notes, Series B due 2031 (the "Notes"), along with the ordinary shares underlying such Notes. We are registering these securities for resale by the Selling Securityholders named in this prospectus, or their transferees, pledgees, donees or assignees or other successors-in-interest that receive any of the shares as a gift, distribution, or other non-sale related transfer.