X0306 4 2022-01-01 0 0001418819 Iridium Communications Inc. IRDM 0001897799 Morgan Kathleen A. C/O IRIDIUM COMMUNICATIONS INC. 1750 TYSONS BOULEVARD, SUITE 1400 MC LEAN VA 22102 0 1 0 0 Chief Legal Officer Common Stock 2022-01-01 4 A 0 24218 0.00 A 53001 D These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this restricted stock unit award, 25% shall vest on January 1, 2023 and the remainder shall vest in equal quarterly installments thereafter on each April 1, July 1, October 1 and January 1, so that all shares of common stock shall be vested as of January 1, 2026, subject to the reporting person's continuous service with the issuer as of each such vesting date. /s/ Brian Leaf, Attorney-in-Fact 2022-01-04