Castelion
Peace through Deterrence
- Est. revenue
- $2.5M–$5M
- Total raised
- $1.5B
- Latest round
- Series C
- Employees
- 251
Funding & revenue at Castelion
How well capitalized the business is — useful context before you scope a fractional engagement or negotiate a rate.
Estimated annual revenue
$2.5M–$5M
Modeled range, not company-reported
Total capital raised
$1.5B
23 known investors
Latest round
Series C · $250M
Aug 2026
Investors
Altimeter CapitalAndreessen HorowitzAngel CollectiveAvenir GroupBlueYard CapitalCantosChampion Hill VenturesDataPower CapitalFirst Citizens Innovation BankingFirst InGeneral CatalystInterlagos CapitalJPMorgan Chase & Co.Jackson MosesJeff CruseyLavrock VenturesLightspeed Venture PartnersQuiet CapitalSilent VenturesSpace.VCT. Rowe PriceThe Carlyle GroupValor Equity Partners
Growth signals
How fast Castelion is adding people, roles, and audience.
Employees
251
Reported band 201-500
Open roles
12
-0.5% year over year
LinkedIn followers
53.4K
+129.5% year over year
Headcount change
- MoM
- +5.5%
- +13 people
- QoQ
- +14.6%
- +32 people
- 6mo
- +50.3%
- +84 people
- YoY
- +112.7%
- +133 people
- 2yr
- +560.5%
- +213 people
Team composition
Where Castelion concentrates its people — a read on which function a fractional leader would plug into.
By function
- Engineering11144%
- Operations4317%
- Human Resources104%
- Business Development104%
- Arts And Design73%
- Information Technology73%
- Research52%
- Marketing52%
By region
- United States256
- California, United States186
- Los Angeles Metropolitan Area174
- Los Angeles, CA42
- Torrance, CA32
- Texas, United States27
Inside Castelion
What the business focuses on, where it operates, and how employees rate it.
Specialties
National SecurityDefenseMilitaryManufacturingGovernmentAerospaceIndustrial Automation
Categories
AerospaceGovernmentIndustrial AutomationManufacturingMilitaryNational Security
Markets
PRIVATE
Competitors
Companies in the same market as Castelion.
https://www.ndc.nato.inthttps://www.pandell.com/http://www.pearson-eng.com/http://copperexperts.comhttp://www.panasas.comhttp://www.mccst.comd-fence.captivate.fmhttps://www.gov.uk/government/organisations/cyber-and-specialist-operations-commandhttp://Plasmos.spacehttps://stelia-northamerica.com/https://www.launchtrax.com/https://www.creativedefense.org/
Castelion in the news
Recent coverage picked up alongside the firmographic refresh.
- Castelion tests ground-launched Blackbeard as potential rival to Lockheed Martin systems
Oct 2026
- US Army eyes Blackbeard hypersonic missile as Castelion tests truck launcher
Oct 2026
- How Castelion's Bryon Hargis bootstrapped a hypersonic missile maker on SpaceX stock
Oct 2026
- U.S. Navy Completes Successful Test Flight of Blackbeard Long-range Hypersonic Strike Missile
Oct 2026
- Castelion, Kratos, Raytheon Picked For AHSS Missile Work
Oct 2026
- US Army picks Castelion among five firms for 1,000 km PrSM Increment 4 prototypes
Oct 2026
Jobs
1
Funding, revenue, headcount, and hiring figures are third-party estimates from public sources and are not confirmed by the company. Last refreshed October 15, 2026.
About this page
This company page is automatically generated based on publicly available job postings. Company information is sourced from publicly available data and may not be complete. If you represent Castelion, you can claim this page to manage and enhance it.