X0306 4 2021-01-06 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 2021-01-06 4 A 0 3362 0.00 A 232050 D Common Stock 2021-01-06 4 A 0 1621 41.63 A 233671 D Common Stock 160983 I By Krongard Irrevocable Equity Trust dated June 30, 2009 This security represents restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. The shares underlying this restricted stock unit award vest on January 6, 2022, subject to the reporting person's continued service with the issuer. The restricted stock units were issued to the reporting person pursuant to the issuer's director compensation plan. The restricted stock units were issued to the reporting person pursuant to the issuer's director compensation plan in lieu of (i) annual cash board member retainer fees of $50,000, (ii) committee chair fees in the amount of $10,000, and (iii) committee member fees in the amount of $7,500. 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 2021-01-08