Castelion
PrivateLast Round
Series C
Aug 19, 2026
Est. Valuation
$13B
Total Funding Raised
$1.29B
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Castelion is an aerospace and defense company that designs, tests, and manufactures next-generation hypersonic strike weapons and military systems.
Sector
Frontier & Industrial Tech
Verticals
Defense Tech, Computing Hardware, Space Technology
Business Model
B2G
Customer Profile
Government Contracts, Hardware Sales
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Castelion Comparables
Compare Castelion with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Specter Aerospace | 78% | |
| Hypersonica | 78% | |
| Lockheed Martin Corporation | 75% | |
Castelion Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Aug 19, 2026 | ||||
| Series B | Dec 5, 2025 | ||||
| Debt | Jan 29, 2025 | ||||
| Series A | Jan 29, 2025 | ||||
| Seed | Oct 5, 2023 |
Secondary Market Activity
Bids, offers, and trades by month
| Operation | Date | Price | Size | Share Class | Structure |
|---|---|---|---|---|---|
BID |
Key People
Founding team and executive leadership
Castelion Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Andreessen Horowitz | Series B, Series A, Seed, Series C |
| Interlagos Capital | Series B, Series A, Series C |
| Lavrock Ventures | Series B, Series A, Series C, Seed |
| BlueYard Capital | Seed, Series B, Series A |
| Cantos Ventures | Series B, Series A |
| The Carlyle Group | Series C |
| General Catalyst | Series B, Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 21, 2026
Monthly visitors increased 37% MoM.
- Aug 19, 2026
Grew 34% QoQ, from 182 to 243 employees.
Castelion Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Appears On
Curated lists and screens where this company is featured.
Frequently Asked Questions
Common questions about Castelion's valuation, stock price, and market status.