EXHIBIT 4.4 SUPPLEMENTAL INDENTURE Supplemental Indenture, dated as of June 25, 1999 (the "Supplemental Indenture"), to the Indenture, dated as of May 18, 1998 (the "Indenture"), among Global Crossing Holdings Ltd., as Issuer, the Guarantors named...Supplemental Indenture • July 12th, 1999 • Global Crossing LTD • Telephone communications (no radiotelephone) • New York
