Castelion
CA
Castelion develops and produces long-range strike weapons for defense customers. It uses rapid design cycles, frequent testing, and commercial-style manufacturing to move systems from prototype to production. The company works with U.S. government and allied partners on missile and related weapon programs.
Founded by Sean Pitt (COO, Founder), Andrew Kreitz (CFO, Founder), Bryon Hargis (CEO, Founder)
Blended valuation$14.9B$17.5B secondary
Valuation history
Weekly blended valuation with priced funding rounds marked on the timeline.
$15.9B
blended valuationfunding round
Jun 30, 2025$1.6BOct 5, 2026
All rounds
7 funding rounds, newest first.
| Round | Announced | Raised | Post-money |
|---|---|---|---|
| Series C | Aug 19, 2026 | $1.1B | $13B |
| Series B | Dec 5, 2025 | $350M | $2.8B |
| Series A | Jan 29, 2025 | $100M | $434.7M |
| Series A | Jan 1, 2025 | $70M | — |
| Seed | Oct 4, 2023 | $8.6M | $68M |
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Investors
17 investors across all rounds.
- AHAndreessen Horowitz
- LVLightspeed Venture Partners
- CHChampion Hill Ventures
- ICInterlagos Capital
- ACAltimeter Capital
- CACantos
- GCGeneral Catalyst
- AVAvenir
- CACarlyle
- SVSilent Ventures
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Secondary market activity
Recent buy and sell interest for Castelion shares on the secondary market.
| Kind | Implied valuation | Price / share | Date |
|---|---|---|---|
| $17.5B | — | Oct 6, 2026 | |
| $5.4B | $233.52 | Sep 14, 2026 | |
| $5.4B | $233.52 | Sep 7, 2026 |
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Data as of Oct 15, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.