66-satellite LEO constellation providing global voice + data + IoT. $791M FY2024 revenue. Major DoD customer via Enhanced Mobile Satellite Services (EMSS) Gateway $738M contract. Second-source PNT (precision time) for GPS-denied environments. Gov't revenue ~25% of total.
Key Milestones
Iridium LLC formed as Motorola spinoff Sep 1991 to commercialize 66-satellite LEO constellation concept patented by Motorola engineers Bary Bertiger, Raymond Leopold, Ken Peterson 1987.
Iridium service launches Nov 1 1998 with 66-satellite + 6-spare constellation; consumer-grade voice/data over LEO global coverage — engineering triumph but $5B+ business cost.
Files Chapter 11 bankruptcy Aug 13 1999 after only ~50K subscribers vs 500K business plan target; one of largest tech bankruptcies of dotcom era.
Iridium Satellite LLC reactivates service Mar 2001 after acquiring constellation for $25M from bankruptcy estate; pivots to DoD/maritime/aviation niche customers.
DoD Iridium Gateway services contract; Pentagon adopts as backup global comms — most reliable ssatcom for assured access in austere/contested environments.
First Iridium NEXT block launched on SpaceX Falcon 9; replaces 1990s constellation
Iridium NEXT constellation completion: 75 satellites operational across 6 orbital planes
Wins Enhanced Mobile Satellite Services (EMSS) Gateway $738M 7-year DoD contract
Satelles Inc. acquired (now Iridium STL Service); secure GPS-resilient PNT for DoD
DoD contract extended through 2026 + IIoT growth; classified hosted payload contracts grow
STL operational across DoD: alternate-PNT signal to backstop GPS in jammed/spoofed environments
Iridium NEXT-2 next-generation satellite contract awarded; targets 2030 launches with hosted-payload SATCOM resilience for DoD.