K2 Space
Overview
Sells large, high-power satellite buses to constellation operators and government programmes, deliberately inverting the smallsat trend by maximizing the mass and volume that current heavy-lift launch vehicles can already throw.
Moat: Its Mega Class bus delivers roughly 20 kW versus ~2 kW for a typical constellation-class satellite — about 10x — enabled by a 20 kW krypton Hall-effect thruster the company says is the most powerful ever flown, twin 10 kW arrays, and ~80% in-house vertical integration.
Business
Primary customers
- Commercial: SES (Space Force PTS-G bus supply)
- Defense: US Space Force / SDA / SpaceWERX
- Defense: Anduril Industries (Golden Dome SBI team)
Sectors
satellite-manufacturing · satellite-buses · space-propulsion · national-security-space · space-based-computing · satcom
Last Funding Round
Key Products
- Mega Class busoperational
Up to 3,000 kg payload, 20 kW power, LEO/MEO/GEO capable; radiation-tolerant redundant avionics and high-delta-v propulsion; up to 10 per launch vehicle.
- GRAVITASoperational
First Mega Class satellite and flagship demonstration: ~2 t spacecraft, ~40 m deployed solar wingspan, 12 undisclosed customer payload modules including DoD. Launched and operating an on-orbit demonstration — objectives (orbit raise, thruster test) still in progress, not yet a completed mission.
First flight: 2026-03-30
- 20 kW krypton Hall-effect thrusterdevelopment
Test-fired at full power on the ground; designed for LEO-to-MEO orbit raise in under 90 days. Flight demonstration in progress.
- Giga Classdevelopment
Planned ~100 kW spacecraft sized for Starship and New Glenn, aimed at orbital compute and communications.
Government Contracts
| Agency | Program | Amount | Year | Source |
|---|---|---|---|---|
| SpaceWERX / US Space Force | STRATFI — funding the GRAVITAS first Mega Class mission and proliferated-MEO demonstration (mixed government funds, SBIR match and private capital) | $60M total contract value | 2024 | |
| US Space Force (as bus supplier to SES, not prime) | PTS-G (Protected Tactical Satcom-Global) — K2 supplies the satellite platform for SES's entry; SES and Viasat were each awarded ~$437.7M as primes | K2's subcontract share undisclosed | 2026 |
Near-term Catalysts
- 2026
GRAVITAS orbit-raise and 20 kW thruster demonstration results
The technical claim underwriting the entire Mega Class thesis.
- 2028
Operational constellation deployment begins
Tests whether the Torrance production line can ramp toward its stated 100 satellites/year capacity.
- 2029
PTS-G service entry with SES
A programme-of-record slot that converts K2 from demonstrator to defence supply chain.
Top Risks
- Single-article flight heritage — one Mega Class spacecraft on orbit, mid-demonstration, against a $3B valuation and $500M backlog that assumes the platform works.
- The Giga Class roadmap and '10 satellites per launch' economics assume Starship and New Glenn reach routine, cheap, high-cadence service — a dependency K2 does not control.
- Supplier position, not prime — on PTS-G and SES's constellation, K2 carries manufacturing and schedule risk while the prime owns the customer relationship and margin.
Recent Milestones
- 2026-05
Named SES's satellite platform supplier for the Space Force PTS-G programme
- 2026-03-30
GRAVITAS launched on Falcon 9 Transporter-16 from Vandenberg — first Mega Class satellite on orbit
- 2025-12
$250M Series C led by Redpoint at a $3B valuation; total raised passes $450M
- 2024-12
$60M STRATFI contract from SpaceWERX / US Space Force for the GRAVITAS proliferated-MEO mission
What investors should know
Q1What is K2 Space's Mega Class bus?⌄
Q2Has GRAVITAS completed its mission?⌄
Q3Does K2 hold the PTS-G contract?⌄
Q4What is K2's valuation?⌄
Q5Who founded K2 Space?⌄
Peers
Sources & References
Press Release
- PR Newswire / K2 Space · 2025-12
- PR Newswire / K2 Space · 2024-12
- K2 Space · 2026-07-26
- Anduril · 2026-05-05