Castelion Corp
Other Technology · Torrance, California
Castelion Corp is a other technology company based in Torrance, California, incorporated in 2022. It has reported $434.0 million raised across 4 Form D filings with the SEC, most recently in 2026.
Castelion designs, tests, and manufactures next-generation military systems rapidly and at massive scale to deter future wars.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2025-11-20 | — | $360.0M | $434.0M | SEC Form D | |
| 2025-11-20 | — | $60.0M | $74.0M | SEC Form D | |
| 2023-10-06 | — | $8.6M | $14.0M | SEC Form D | |
| 2023-04-21 | — | $5.4M | $5.4M | SEC Form D |
SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.
Firms whose own published portfolio pages list this company.
Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.