X0306 4 2016-12-16 0 0001418819 Iridium Communications Inc. IRDM 0001312913 Krongard A B C/O IRIDIUM COMMUNICATIONS INC. 1750 TYSONS BOULEVARD, SUITE 1400 MCLEAN VA 22102 1 0 0 0 Common Stock 2016-12-16 4 P 0 50000 9.95 A 105811.6 D Common Stock 115233 I By Krongard Irrevocable Equity Trust dated June 30, 2009 Price reflected is the weighted-average purchase price for shares purchased. The range of purchase prices for the transactions reported was $9.875 to $9.95 per share, inclusive. The reporting person undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price. These shares are held in a trust for the benefit of the reporting person's children. The reporting person's spouse is trustee of the trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose. /s/Brian Leaf, Attorney-in-Fact 2016-12-19