Whisper Aero
PrivateLast Round
Series B
Sep 2, 2026
Total Funding Raised
$43.55M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Whisper Aero operates in Mobility, Transportation & Logistics and is based in Crossville, Tennessee. Its latest recorded funding round was a Grant round in April 2025.
Whisper Aero is an aerospace company that develops advanced electric propulsion systems for aviation, defense, and commercial applications.
Sector
Mobility, Transportation & Logistics
Verticals
Aviation & Drones, Defense Tech, Consumer Electronics, Clean Transportation
Business Model
B2B
Customer Profile
Government Contracts, Hardware Sales, Services & Consulting
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Whisper Aero Comparables
Compare Whisper Aero with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Greenjets | 82% | |
| H3X | 77% | |
| H55 | 77% |
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Whisper Aero Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Sep 2, 2026 | ||||
| Grant | May 7, 2025 | ||||
| Grant | Apr 2, 2025 | ||||
| Grant | Aug 27, 2024 | ||||
| Grant | Jul 18, 2024 | ||||
Grant | Apr 18, 2023 |
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Key People
Founding team and executive leadership
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Whisper Aero Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Linse Capital | Series A |
| Connor Capital | Seed, Series A |
| Capricorn Investment Group | Series A |
| Levitate Capital | Seed |
| Kindred Ventures | Series A, Seed |
| United States Air Force | Grant |
| Lux Capital | Seed |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 2, 2026
$46.3M raised in early stage VC round.
- Jul 1, 2026
Working on applications for NASA.
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Recent news
Latest coverage and updates
- is_developingSep 11, 2026
Whisper partners with Mach under a Defense Innovation Unit contract to develop Atlas, a maritime strike aircraft, in California in Jun '26.
- is_developingAug 20, 2026
Whisper aims to further develop its products, including a backpack leaf blower that is better suited to professional landscapers.
- partners_withAug 20, 2026
Whisper plans to partner with Tennessee Tech University on an electric aircraft project in Tennessee, with Tennessee Tech faculty and students supporting ground testing, as announced in Apr '25.
- is_developingAug 20, 2026
Whisper is conducting piloted testing of its electric propulsion system on a modified Aériane Swift 3 glider in Tennessee, with three flights completed on Aug 20th '26.
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Whisper Aero 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.
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Frequently Asked Questions
Common questions about Whisper Aero's valuation, stock price, and market status.
Is Whisper Aero a public or private company?
Whisper Aero is a private company.
What is the current stock price of Whisper Aero?
Whisper Aero is a private company, so its shares have no public market price. Caplight tracks Whisper Aero's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Whisper Aero worth (valuation)?
Valuation information for Whisper Aero is not publicly available.
Can I buy Whisper Aero stock?
Whisper Aero shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Whisper Aero's last funding round?
Whisper Aero's most recent funding round was Series B on September 2, 2026.
Who are the main investors in Whisper Aero?
Key investors in Whisper Aero include Connor Capital, Menlo Ventures, EVE Atlas.
Will Whisper Aero IPO soon?
No public IPO plans have been announced for Whisper Aero.
How can I track Whisper Aero secondary market activity?
Caplight tracks bids, offers, and trades in Whisper Aero's shares on secondary markets.