X0306 4 2019-11-01 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 2019-11-01 4 M 0 29536 7.79 A 205403.4 D Common Stock 2019-11-01 4 S 0 9520 24.63 D 195883.4 D Common Stock 160983 I By Krongard Irrevocable Equity Trust dated June 30, 2009 Employee Stock Option (Right to Buy) 7.79 2019-11-01 4 M 0 29536 0.00 D 2020-01-06 Common Stock 29536 0 D Price reflected is the weighted-average sales price for shares sold. The range of the sales prices for the transaction reported was $24.50 to $24.73 per share. 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 sold 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. Immediately exercisable. /s/Brian Leaf, Attorney-in-Fact 2019-11-04