Castelion
Last verified 2026-05-18. JSON
The funding figures on this page are attributed, not sourced: a publisher is on record but no document URL is. How we mark provenance.
| Total raised | $553.2Mattributed |
|---|---|
| Latest round | series-d+, $350.0M, 2025-12-01attributed |
| Founded | 2022 |
| Headquarters | El Segundo, USA |
| Industry | infra |
| Stage | series-b+ |
| Website | castelion.com |
Castelion develops affordable hypersonic strike weapons and test vehicles produced via SpaceX-style vertical integration. Customers are the US Department of Defense and allied buyers seeking high-volume hypersonic capabilities. The company plans serial manufacturing rather than the one-off prototypes typical in defense.
Funding rounds
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2025-12-01 | series-d+ | $350.0M | undisclosed |
Detected tech stack
Cloudflare, PHP 8.0.28, Lenis 1.0.42, reCAPTCHA, Google Analytics G-?GA4:, Google Tag Manager, jsDelivr, DoubleClick Floodlight, WordPress, jQuery, MySQL, textsplitter 9.6.0
Provenance
| Fact | Status | Basis |
|---|---|---|
| Series D+, $350.0M | attributed | crunchbase named as publisher. No document URL on file. |
| Total raised $553.2M | attributed | crunchbase named as publisher. No document URL on file. |
| Company existence | self-reported | castelion.com, read 2026-05-18 |
| Description | self-reported | castelion.com, read 2026-05-18 |
Nothing on this page is sourced yet. A sourced fact links to a document that states it.
Change history
No change recorded since records began on 2026-09-24.