Valued at $102.3M at its later-stage round, Nov 2021. Nothing has traded since.
- ·The complete investor list: 19 names
- ·Watch Altaeros: the Monday email on marks, rounds and moves
Valuation timeline
0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026Membership and data by Private Market View
Altaeros funding history
2 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Oct 2018 | Seed Round | $3.8M | ▮ | ▮ |
| Nov 2014 | Early Stage VC | $7.2M | ▮ | ▮ |
Membership and data by Private Market View
Altaeros valuation
Altaeros was valued at $102 million at its later-stage round in Nov 2021. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.
How much has Altaeros raised?
Altaeros has raised $93.9 million in total; 2 of its rounds are on record. The largest on record was a $7.2 million early-stage round in Nov 2014; the most recent was a $3.8 million seed round in Oct 2018.
Altaeros has filed 2 Form Ds with the SEC since 2014, most recently in Nov 2018 ($3.8 million sold to 2 investors).
How Altaeros'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 Altaeros, 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 its last priced round. Question about this number? Full methodology →
Frequently asked about Altaeros
- What is Altaeros worth?
- Altaeros is valued at $102.3M as of Oct 2026. Valued at $102.3M at its later-stage round, Nov 2021. Nothing has traded since.
- How much has Altaeros raised?
- Altaeros has raised $93.9M in total funding across 2 recorded rounds.
- When did Altaeros last raise?
- Altaeros last raised in Oct 2018 (Seed Round), raising $3.8M.