K2 Space
K2 Space builds large, high-power satellite buses sized for cheap heavy-lift launch, reaching a $6.8 billion valuation and a US Space Force programme slot four years after founding.
Background
K2 Space Corporation was founded in 2022 by brothers Karan Kunjur, chief executive, and Neel Kunjur, chief technology officer, and is based in Torrance, California.
Neel Kunjur spent six years at SpaceX developing Dragon avionics and served as a mission director; Karan Kunjur spent a decade at Boston Consulting Group and helped lead the AI company Text IQ to a nine-figure exit.
The company's thesis inverts the industry's direction of travel. As the satellite sector moved toward smaller spacecraft, K2 argued that miniaturisation optimised around a constraint — launch cost per kilogram — that Starship-class vehicles remove, and that building large, high-power buses was an engineering problem rather than a physics one.
Its buses are pitched as delivering the capability of exquisite satellites at the price and schedule of small ones.
K2 grew from 25 people in 2024 to roughly 90 by year-end, working from a 15,000 square-foot factory. Its first satellite mission is named Gravitas.
Financial footing
- $250M Series C at $3B (Dec 2025)
- $500M Series D at $6.8B co-led by Kleiner Perkins and ICONIQ (Jul 2026), total funding >$1B
- >$1B in signed contracts including SES and Anduril
- US Space Force Protected Tactical SATCOM-Global program slot
- First mission Gravitas
- Backers: Kleiner Perkins, ICONIQ, First Round Capital
K2 Space has raised more than $1 billion in about four years. Disclosed milestones include an $8.5 million seed in 2023, a $250 million Series C at a $3 billion valuation announced in December 2025, and a $500 million Series D at a $6.8 billion valuation announced 30 July 2026, co-led by Kleiner Perkins and ICONIQ. First Round Capital is an early backer.
Unusually for a space company at this valuation, K2 has disclosed a contracted backlog: more than $1 billion in signed contracts across commercial and US government customers, including SES and Anduril.
The Series C was announced on the back of $500 million in signed contracts, meaning the book roughly doubled in the seven months to the Series D. Revenue recognition against that backlog has not been disclosed.
Major customers & contracts
K2 states it holds a US Space Force programme-of-record slot on Protected Tactical SATCOM-Global, the military's resilient tactical communications programme — a materially different position from a development contract, since programmes of record carry sustained appropriated funding.
Earlier reporting also references a Space Force contract associated with the Gravitas mission.
On the commercial and industrial side, K2 has named SES, the Luxembourg satellite operator, and Anduril among more than $1 billion in signed contracts.
The Anduril relationship is notable: a defence-technology company buying satellite buses rather than building them points to K2 becoming supplier infrastructure for other people's constellations.
Leadership & contact surface
Leadership: Karan Kunjur
Official site: https://www.k2space.com
Competitive position
K2's competitive position is defined by what it refuses to build. Against the smallsat constellation builders — Apex, Astranis and the broader class tracked in this directory — K2 is deliberately on the other side of the size argument, betting that power, aperture and payload capacity matter more than unit count for the missions the military actually needs.
Against the legacy bus manufacturers inside the primes, it competes on cost and schedule.
Its dependency is structural: the economic case rests on cheap heavy-lift capacity, which in practice means Starship reaching routine operational cadence.
If that slips, K2's buses remain buildable but the price advantage that justifies a $6.8 billion valuation compresses toward the incumbents it is trying to undercut.
The signed backlog is the strongest evidence in its favour and the thing that distinguishes it from most space companies at similar valuations, which are priced on capability rather than contracts.
Battlefield relevance
No combat use — K2 supplies space infrastructure rather than weapons. Its defence relevance is the Protected Tactical SATCOM-Global programme slot, which addresses jam-resistant tactical communications, a capability whose importance has been demonstrated repeatedly in Ukraine where satellite communications have been both decisive and heavily contested.
Sources & verification
- https://techfundingnews.com/two-brothers-behind-k2-space-grab-500m-at-6-8b-valuation-to-challenge-spacex/
- https://www.bloomberg.com/news/videos/2026-07-30/spacex-alum-s-startup-hits-6-8-billion-valuation-video
- https://www.linkedin.com/posts/karan-kunjur_three-and-a-half-years-ago-neel-kunjur-and-activity-7404901376146714625-2Yd7
- https://labusinessjournal.com/la500-2026/manufacturing-2026/la500-2026-karan-kunjur/
- https://www.k2space.com/about
- https://www.cnbc.com/2023/03/10/k2-space-startup-building-massive-spacecraft.html
- https://www.firstround.com/companies/k2space
- https://payloadspace.com/podcast/a-mass-abundant-world-with-karan-and-neel-kunjur-k2-space/