Castelion is a cutting-edge defense technology company focused on restoring America's conventional deterrence capability through the rapid, affordable, and scalable production of advanced strike weapons. The company specializes in hypersonic munitions production, integrating its first hypersonic weapon, Blackbeard, with U.S. Army and U.S. Navy operational platforms.
Estimated Valuation
Leadership & Board
Current Number of Employees254
Current LinkedIn Followers53,878
Latest Estimated Valuation
Estimated Valuation―
Estimated Valuation―
Total Amount Raised$1B
Total Amount Raised$1B
Total Funding Rounds2
Total Funding Rounds2
Latest Funding Amount$1B
Latest Funding Amount$1B
Latest Funding RoundSeries C
Latest Funding RoundSeries C
Post-Money Valuation―
Post-Money Valuation―
Employee Trend
Castelion had 254 employees as of September 14, 2026. The number of employees increased by 3 (1.20%) week-over-week.
254Latest Employee Count
3(1.20%)Week-Over-Week Change
Employee Trend serves as a data-driven indicator of company growth and expansion. The measurement reflects how a company’s workforce size changes over time.
Social Trend
Castelion had 53,878 followers as of September 14, 2026. The number of followers increased by 591 (1.11%) week-over-week.
53,878Latest Followers Count
591(1.11%)Week-Over-Week Change
LinkedIn Follower Trend serves as a data-driven indicator of market interest and company visibility. The measurement reflects how a company’s LinkedIn follower count changes over time.
Funding Round
Aug 19, 2026
Series C
$1.00B
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Dec 05, 2025
Series B
$350.00M
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Investors
Series B
Series B
Series B
Series B
Series B
Series B
Series B
Series B
