Company Dossier
Surtr Defense Systems
YC Spring 2026 startup building ParallaxOS, a hardware-agnostic operating system for counter-UAS sensor fusion and cueing.
FILE · surtr-defenseOpen-source file · BattlePolicy ProStatus Private (Y Combinator Spring 2026)Verified
Surtr Defense Systems
YC Spring 2026 startup building ParallaxOS, a hardware-agnostic operating system for counter-UAS sensor fusion and cueing.
Founded
2026
HQ
United States
Headcount
2 listed by YC
Total raised
YC batch participation; amount undisclosed
Valuation
Undisclosed
Stage
Y Combinator Spring 2026 / Private
Restricted · BattlePolicy Pro
The rest of the Surtr Defense Systems file
- ▸Background — founding, ownership and how the company got to here
- ▸Financial footing — rounds, valuation, backers and who is exposed
- ▸Customers & contracts — live join against our Procurement Tracker
- ▸Leadership — who runs it, and the contact surface
- ▸Competitive position — who it beats, who beats it, and on what
- ▸Battlefield relevance — confirmed combat use versus company claim
- ▸Sources — every citation this file is built on
- ▸Analyst verdict — where the evidence is thin and what would change our call