Ostium's last reported valuation, Dec 2025. Nothing priced has surfaced since.
- ·The complete investor list: 25 names
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Valuation timeline
0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026Membership and data by Private Market View
Ostium funding history
No funding rounds for Ostium are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
Ostium valuation
Ostium's last reported valuation was $254 million in Dec 2025. No priced round, secondary trade or fund mark has surfaced since.
How Ostium'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 Ostium, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by last reported valuation. Question about this number? Full methodology →
Frequently asked about Ostium
- What is Ostium worth?
- Ostium is valued at $254.0M as of Oct 2026. Ostium's last reported valuation, Dec 2025. Nothing priced has surfaced since.
- How much has Ostium raised?
- Ostium has raised $27.7M in total funding across its recorded rounds.