United States · 
Who invested in Altaeros Energies?
Altaeros Energies's investors include National Science Foundation, MassChallenge, SoftBank and SoftBank Capital.
2016201820202022
$7.0MVenture$35MVenture
United States · Venture startup
Who invested in Altaeros Energies
Funding summaryUpdated 26 Oct 2026
$42Mraised across 2 rounds since 2014, from 2 sources
$7.0MVenture$35MVenture
- Latest round
- Venture, $35MJul 2022
- Step-upi
- 5×
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture, $7.0M Dec 2014
- Biggest round
- $35M Venture · Jul 2022
- Between rounds
- 7.6 years from the last two
The rounds
- Jul 2022Venture$35M3 new
Source recordedSEC filing: $35M sold, first sale Jun 2022
- Dec 2014Venture$7.0M1 new
From a historical funding recordSEC filing: $7.2M sold, first sale Nov 2014
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Altaeros Energies as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Altaeros Energies
How much has Altaeros Energies raised?
Altaeros Energies has raised $42M across 2 rounds since 2014.
When did Altaeros Energies last raise?
Altaeros Energies's most recent round was a Venture of $35M in Jul 2022.
What was Altaeros Energies's biggest round?
Its most recent round, $35M in Jul 2022, is also its largest on record.
Who backed Altaeros Energies first?
Altaeros Energies's first round on record, in Dec 2014, was backed by SoftBank Capital.
What stage is Altaeros Energies at?
Altaeros Energies's latest named round is a Venture, in Jul 2022.
Where is Altaeros Energies based?
Altaeros Energies is based in the United States.
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