TV/Cable News American Tower Completes CoreSite Realty Buy By RBR-TVBR - December 28, 2021 0 Facebook Twitter WhatsApp Linkedin Email BOSTON — American Tower Corporation has closed its acquisition of CoreSite Realty Corporation. It follows the completion of its previously announced tender offer for all outstanding shares of common stock of CoreSite. Please Login to view this premium content. (Not a member? Join Today!)