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Ampaire

Long Beach, CA · Founded 2016 · Privately Held (backing)

Developer of hybrid-electric engines designed to improve fuel efficiency and reduce operating costs in aircraft. Ampaire is based in Long Beach, CA and was founded in 2016. It was valued at $137 million at its later-stage round in Jan 2026, the last priced event on record. It has raised $74.3 million across 1 recorded round; the latest was a $2.6 million seed round in Jul 2018.

PMV mark · valuation
$137.0M
Oct 2026
Priced at
its later-stage round
Jan 2026
Total raised
$74.3M
Last round
Seed Round
Jul 2018

Ampaire key facts

as of Oct 2026
  • Developer of hybrid-electric engines designed to improve fuel efficiency and reduce operating costs in aircraft.
  • Ampaire is valued at approximately $137.0M as of Oct 2026, set at its later-stage round, Jan 2026; nothing has traded since, per PrivateMarketView’s mark.
  • It has raised $74.3M across 1 recorded rounds; the latest was Seed Round ($2.6M) in Jul 2018.
  • Notable investors include Techstars, Impact Assets, Climate Capital, Astir Ventures, U.S. Department of Energy — 29 tracked in total.
  • Ampaire has filed 1 Form D with the SEC, most recently Aug 2018 ($2.6M sold to 28 investors).
  • Status: Privately Held (backing).
PrivateMarketView mark
MEDIUM confidence
$137.0M

Valued at $137.0M at its later-stage round, Jan 2026. Nothing has traded since.

set by its last priced roundas of Oct 2026question about this number?
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Ampaire funding rounds

1 rounds
Jul 2018Seed Round$2.6MSEC filing▮
Full funding history →

Ampaire valuation

Ampaire was valued at $137 million at its later-stage round in Jan 2026. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Ampaire raised?

Ampaire has raised $74.3 million in total; 1 of its rounds is on record. The largest on record was a $2.6 million seed round in Jul 2018.

Ampaire has filed 1 Form D with the SEC, most recently in Aug 2018 ($2.6 million sold to 28 investors).

Ampaire investors

29 investors are on record for Ampaire, including Techstars, Impact Assets, Climate Capital and Astir Ventures. By type, the record holds 7 venture capital firms and 1 asset manager. The seed round in Jul 2018 drew 28 investors.

About Ampaire

Developer of hybrid-electric engines designed to improve fuel efficiency and reduce operating costs in aircraft. The company offers custom propulsion systems and onboard energy technology scalable across different aircraft sizes, enabling aviation businesses to lower operational expenses and reduce environmental impact.

Sector
Business Products and Services (B2B)
HQ
Long Beach, CA, United States
Founded
2016
Employees
25
Ownership
Privately Held (backing)

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