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Wardstone

YC F25

El Segundo, US · Founded 2025 · 8 employees · Hiring · 1 known investors

Wardstone designs and plans to deploy a constellation of satellites equipped with sensors and kinetic interceptors to detect, predict, and counter hypersonic and ballistic missiles for U.S. military defense agencies. The system, called the Golden Dome, is intended to provide global missile defense capabilities across multiple domains of conflict for the Space Force, Air Force, Navy, and Missile Defense Agency.

Advanced ManufacturingDefense TechSpace TechHard TechSatellitesRocketryAerospaceDefenseUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (F25)

Wardstone was founded in 2025 by Sebastian Fischer and Tobias Fischer.

SFSebastian Fischer
Sebastian FischerinCo-founder · Chief Executive OfficerHe brings over a decade of engineering and product experience from roles at Amazon Prime Air, Cruise Self-Driving, Lockheed Martin, and NASA on planetary spacecraft, with an aerospace engineering degree from MIT and dual MS/MBA from Harvard.
TFTobias Fischer
Tobias FischerinCo-founder · Chief Technical OfficerHe previously worked at Astranis on geostationary communication satellites and studied mechanical engineering at Cornell University, where he served as Chief Spacecraft Engineer on a lunar CubeSat mission.

Investors · 1

Y CombinatorSan Francisco · $500K

Images

Wardstone photo

Competitors · 1

by search overlap
Capella Space4 shared keywordsCapella Space designs, builds, and operates synthetic aperture radar (SAR) satellite constellations that provide all-weather, day-and-night Earth observation imagery at sub-0.25m resolution. It offers an automated end-to-end tasking and data delivery platform serving defense and intelligence, maritime, disaster response, and infrastructure monitoring customers.

Companies competing with Wardstone for the same Google search keywords, organic and paid, via search-intersection analysis.

In the news

Theiatheia.global · Feb 2026Startup bets on new approach to space-based missile defense - SpaceNewsspacenews.com · Feb 2026Wardstone: Satellites for Missile Defenseycombinator.com · Nov 2025Wardstone Funding | Complete Analysis | Extruct AIextruct.ai

Frequently asked questions

What does Wardstone do?
Wardstone designs and plans to deploy a constellation of satellites equipped with sensors and kinetic interceptors to detect, predict, and counter hypersonic and ballistic missiles for U.S. military defense agencies. The system, called the Golden Dome, is intended to provide global missile defense capabilities across multiple domains of conflict for the Space Force, Air Force, Navy, and Missile Defense Agency.
Who founded Wardstone?
Wardstone was founded by Sebastian Fischer, Tobias Fischer in 2025.
Who are Wardstone's investors?
Wardstone's investors include Y Combinator.
Where is Wardstone headquartered?
Wardstone is headquartered in El Segundo, US.