Viasat, Inc.

VSAT ·Communication Services, Telecom Services, United States

Business Overview: Viasat, Inc. (NASDAQ: VSAT)

Executive Summary

Viasat, Inc. is a global satellite communications company that owns and operates its own fleet of satellites, builds the ground infrastructure and user terminals that connect to them, and sells connectivity services and defense communications products to commercial and government customers. Viasat combines its legacy geostationary (GEO) satellite fleet with the fleet it gained through its 2023 acquisition of Inmarsat (roughly $550.7 million in cash plus 46.36 million shares of Viasat common stock), making it one of the largest independent satellite operators outside the national players and the newer low-earth-orbit (LEO) entrants.

Headquartered in Carlsbad, California, Viasat generated roughly $4.5 billion in fiscal 2025 revenue (fiscal year ended March 31, 2025), spanning in-flight connectivity for commercial airlines and business jets, maritime connectivity, U.S. fixed broadband, government satellite communications, and a separate defense and advanced-technologies business building encryption, tactical networking, and space-systems hardware. Viasat matters because it sits at the center of the satellite industry's biggest structural question: whether large, expensive GEO satellites can keep competing with SpaceX's Starlink and other emerging LEO constellations.

1. Core Business Model & How They Work

Viasat earns revenue through a mix of subscription connectivity services, hardware/equipment sales, and government contracts, built on satellite capacity it owns, leases, or accesses through partners.

Satellite capacity (owned GEO fleet + Inmarsat fleet + leased/partner capacity)
        ➡️ Ground infrastructure & gateways
        ➡️ User terminals (aircraft antennas, ship terminals, fixed broadband modems, tactical radios)
        ➡️ End customers (airlines, shipping operators, consumers, U.S. & allied governments)
        ➡️ Recurring service revenue + equipment sales + government contract revenue

Key structural moves:

Inmarsat acquisition (May 2023): combined Viasat's Ka-band GEO fleet with Inmarsat's L-band global network, broadening maritime, aviation, and IoT coverage and spectrum.
Sale of Link-16 tactical data link business to L3Harris (January 2023): roughly $1.96 billion in cash, now reported as discontinued operations — a deleveraging move after the Inmarsat deal.
Continued GEO satellite investment: 23 satellites in service across Ka-, L-, and S-bands as of the FY2025 10-K, with eight more GEO satellites in development.

2. Business Segments

Viasat, Inc.
├── Communication Services
│   ├── Aviation (in-flight connectivity — commercial & business jets)
│   ├── Government Satcom (secure broadband, tactical comms, ISR, L-band terminals)
│   ├── Maritime (vessel connectivity, NexusWave managed service)
│   └── Fixed Services & Other (U.S. fixed broadband, IoT, energy, prepaid internet)
└── Defense and Advanced Technologies
    ├── Information Security & Cyber Defense (encryption, MOJO tactical gateway)
    ├── Space & Mission Systems (satellite architecture, modems, terminals, small satellites)
    ├── Tactical Networking (TrellisWare resilient battlefield communications)
    └── Advanced Technologies & Other (multi-orbit, direct-to-device, IP licensing)

Communication Services is the larger of the two segments and includes:

Aviation: in-flight connectivity on roughly 4,120 commercial aircraft and 2,000 business jets, with thousands more aircraft contracted and awaiting installation.
Maritime: service to roughly 14,000 vessels, anchored by the NexusWave managed connectivity service.
Fixed services: U.S. fixed broadband with roughly 189,000 subscribers and about $115 average monthly revenue per user, plus IoT and prepaid internet offerings.

Defense and Advanced Technologies builds the encryption, tactical networking, and space-systems hardware that underpins both Viasat's own government business and third-party defense programs — an area where independent R&D spend ran $142.4 million in FY2025.

3. Competitive Landscape

Viasat names its competitors directly, segment by segment:

Aviation: Anuvu, Gogo, Intelsat, Iridium, Amazon's Kuiper, Panasonic Avionics, SES, SpaceX, and Thales.
Maritime: KVH, SES, SpaceX, and Speedcast.
Defense & Advanced Technologies: Comtech, EchoStar (Hughes Network Systems), General Dynamics, Gilat, L3Harris, Maxar, and Thales.
Government Satcom: BAE Systems, Eutelsat, Intelsat, Iridium, OneWeb, SES, SpaceX, Telesat, and the major U.S. defense prime contractors.

                    Mass-market / consumer scale
                              |
        SpaceX (Starlink) •  |  • Amazon Kuiper
                              |
GEO, legacy-heavy  ----------+----------  LEO, newer architecture
                              |
      Viasat •  • SES         |   • Intelsat / Eutelsat-OneWeb
      (Inmarsat-enlarged)    |
                              |
                Enterprise / government / niche

Viasat's position is as a large, diversified, GEO-plus-partner-capacity operator with deep government and defense relationships — differentiated from Starlink's consumer-first LEO scale, but exposed to the same long-run question of whether GEO economics hold up against LEO.

4. Strategic Strengths & Risks

Strengths (real moat sources)

Scarce, government-granted spectrum rights (Ka-, L-, and S-band) and orbital slots, enlarged materially by the Inmarsat acquisition — a regulatory and capital barrier new entrants cannot quickly replicate.
Deep, multi-year contracts with airlines and governments backed by physically installed hardware, creating real switching costs.
A genuinely diversified book spanning commercial aviation, maritime, fixed broadband, and government/defense — no single customer besides the U.S. Government (about 18% of FY2025 revenue) is highly concentrated.

Risks

LEO competitive disruption: SpaceX's Starlink and Amazon's Kuiper are rapidly expanding broadband capacity with different, lower-cost-per-bit economics, pressuring Viasat's GEO-centric aviation and maritime businesses.
Capital intensity and leverage: the Inmarsat acquisition and ongoing GEO satellite construction (eight more in development) require sustained heavy capex, following debt taken on to fund the deal.
Execution risk on next-generation satellites: any delay or anomaly on a new GEO satellite launch directly affects committed aviation and government capacity plans.

5. Financial Overview

Metric	Figure	Strategic Context
FY2025 revenue	~$4.52 billion	Reflects the first full year with Inmarsat fully integrated
Independent R&D spend	$142.4 million (FY2025) vs. $150.7M (FY2024)	Continued investment in defense/advanced-technologies IP despite overall cost discipline
U.S. Government revenue concentration	~18% of FY2025 revenue	Meaningful but not dominant single-customer exposure
Link-16 divestiture proceeds	~$1.96 billion (to L3Harris, Jan. 2023)	Used to help delever following the Inmarsat acquisition

Summary Conclusion

Viasat's moat comes from decades of accumulated spectrum rights, satellite assets, and deeply embedded, hardware-based customer relationships across aviation, maritime, and government markets — assets that took the Inmarsat acquisition and years of capital investment to assemble and that a new entrant cannot quickly replicate. The company's biggest forward risk is whether its GEO-centric economics can keep pace as SpaceX's Starlink, Amazon's Kuiper, and other LEO constellations expand capacity and compress pricing in the same aviation, maritime, and government markets Viasat has long served.