What is Castelion worth?
$2.8Blast known valuation
Castelion last raised $360.0M in its Later Stage VC (Aug 2025).
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See the evidence behind this price
- ·Post-money valuations for all 3 rounds
- ·The complete investor list — 26 names
- ·Watchlist + deal alerts for Castelion
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Funding history
3 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Aug 2025 | Later Stage VC | $360.0M | ▮ | ▮ |
| Nov 2024 | Later Stage VC | $60.0M | ▮ | ▮ |
| Sep 2023 | Early Stage VC | $8.6M | ▮ | ▮ |
How Castelion's valuation is determined
Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.
For Castelion, we compose those signals into the PA Mark — a weighted composite of 2 recent pricing inputs, decayed by age and reset on new rounds. The implied valuation multiplies the mark by shares outstanding. Full methodology →
Frequently asked
- What is Castelion worth?
- Castelion's implied valuation is $2.8B, based on the PA Mark composite price of about $175 per share as of Sep 2026.
- How much has Castelion raised?
- Castelion has raised $464.1M in total funding across 3 recorded rounds.
- When did Castelion last raise?
- Castelion last raised in Aug 2025 (Later Stage VC), raising $360.0M.