Crown Castle Declares Quarterly Preferred Stock Dividend

Crown Castle International Corp. (NYSE:CCI) (“Crown Castle”) announced today that the quarterly dividend on its 6.875% Mandatory Convertible Preferred Stock (“Preferred Stock”) will be paid August 1, 2018 to holders of record on July 15, 2018. The dividend will be paid in cash at a rate of $17.1875 per share of Preferred Stock.

ABOUT CROWN CASTLE

Crown Castle owns, operates and leases more than 40,000 cell towers and approximately 60,000 route miles of fiber supporting small cells and fiber solutions across every major U.S. market. This nationwide portfolio of communications infrastructure connects cities and communities to essential data, technology and wireless service - bringing information, ideas and innovations to the people and businesses that need them. For more information on Crown Castle, please visit www.crowncastle.com.

CONTACTS:

Dan Schlanger, CFO and TreasurerBen Lowe, VP Corporate FinanceCrown Castle International Corp.713-570-3050