Ampaire
PrivateLast Round
Series B
Aug 18, 2026
Total Funding Raised
$34.61M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Ampaire is an aerospace company that develops hybrid-electric propulsion systems and retrofits existing aircraft to improve fuel efficiency and reduce environmental impact.
Sector
Frontier & Industrial Tech
Verticals
Aviation & Drones, Clean Transportation, Energy Storage
Business Model
B2B
Customer Profile
Hardware Sales, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Ampaire Comparables
Compare Ampaire with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Dovetail Electric Aviation | 83% | |
| Heart Aerospace | 83% | |
| Ascendance Flight Technologies | 81% |
Ampaire Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Aug 18, 2026 | ||||
| Strategic | Jan 8, 2026 | ||||
| Grant | Feb 17, 2023 | ||||
| Grant | Feb 24, 2020 | ||||
| Series A | Apr 10, 2019 | ||||
Accelerator | Feb 28, 2019 |
Key People
Founding team and executive leadership
Ampaire Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Elemental Impact | Accelerator, Angel, Series B |
| Techstars | Accelerator, Series B |
| Gaingels | Series B |
| Climate Capital | Series B |
| Venn10 Capital | Series B |
| The Pay It Forward Company | Series B |
| Techstars Ventures | Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 18, 2026
$19M round led by DiamondStream Partners.
- Aug 2, 2026
Grew 17% QoQ, from 24 to 28 employees.
Ampaire Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Ampaire's valuation, stock price, and market status.
Is Ampaire a public or private company?
Ampaire is a private company.
What is the current stock price of Ampaire?
Ampaire is a private company with no public stock price. Caplight tracks Ampaire's secondary market activity and provides MarketPrice™ estimates to Caplight users.
How much is Ampaire worth (valuation)?
Valuation information for Ampaire is not publicly available.
Can I buy Ampaire stock?
Ampaire shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Ampaire's last funding round?
Ampaire's most recent funding round was Series B on August 18, 2026.
Who are the main investors in Ampaire?
Key investors in Ampaire include DiamondStream Partners.
Will Ampaire IPO soon?
No public IPO plans have been announced for Ampaire.
How can I track Ampaire secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Ampaire's secondary market activity and sign up for updates.