Castelion stock & equity tools

Pre-IPO · Aerospace/Defense

Castelion is pre-IPO. Plan your AMT and NSO exercise tax at any valuation: current 409A FMV, expected IPO price, or post-IPO scenarios.

Beta · invite-only · AlphaLatitude Inc. · Free Tools

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About Castelion

Castelion is a privately held Aerospace/Defense company, incorporated in Delaware and headquartered in Torrance, CA.

Last reported secondary-market price: $147.29 per share (as of 2026-06-06). Your own 409A may differ.

Hypersonics.

Equity grants at Castelion typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).

Castelion, founded in November 2022 in El Segundo, California by SpaceX alumni Bryon Hargis (CEO), Sean Pitt (COO), and Andrew Kreitz (CFO), builds hypersonic weapons for the Pentagon at production scale. In 2.5 years the team advanced a clean-sheet hypersonic design through more than 25 flight tests. The company raised $100 million in a Series A in January 2025 and $350 million in a Series B in mid-2025, with Altimeter Capital and Lightspeed Venture Partners co-leading alongside Andreessen Horowitz and General Catalyst. Total disclosed funding exceeds $460 million.

Sources: castelion.com · techcrunch.com

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