WindBorne Systems
PrivateLast Round
Series B
Aug 5, 2026
Est. Valuation
$250M
Total Funding Raised
$58M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
WindBorne Systems operates in AI, Data & Cloud Infrastructure and is based in Palo Alto, California. Its latest recorded funding round was a Series B round in August 2026.
WindBorne Systems is an aerospace and environmental intelligence company that designs, manufactures, and operates a global constellation of smart weather balloons to provide high-resolution atmospheric data and AI-powered weather forecasts.
Sector
AI, Data & Cloud Infrastructure
Verticals
Defense Tech, Environmental Monitoring
Business Model
B2G
Customer Profile
Government Contracts, Data as a Service, Subscription SaaS
AI Layer
Foundation
Historical Pricing
Historical view of private secondary pricing and transaction trends.
WindBorne Systems Comparables
Compare WindBorne Systems with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Atmo | 82% | |
| Climavision | 81% | |
| Tomorrow.io | 81% |
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WindBorne Systems Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Aug 5, 2026 | ||||
| Series A | Jun 3, 2024 | ||||
| Seed | Jun 22, 2023 |
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WindBorne Systems Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Jetstream | Series A |
| TransLink Capital | Series B |
| Khosla Ventures | Seed, Pre Seed, Series B, Series A |
| BIPROGY | Series B |
| Harvest Venture Partners | Seed, Series A |
| Lux Capital | Series B |
| Galvanize Climate Solutions | Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 5, 2026
$37M round led by Khosla Ventures and Galvanize Climate Solutions.
- Jun 3, 2024
$15M round led by Khosla Ventures.
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WindBorne Systems 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 WindBorne Systems's valuation, stock price, and market status.
Is WindBorne Systems a public or private company?
WindBorne Systems is a private company.
What is the current stock price of WindBorne Systems?
WindBorne Systems is a private company, so its shares have no public market price. Caplight tracks WindBorne Systems's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is WindBorne Systems worth (valuation)?
WindBorne Systems's valuation is estimated at $250.0M based on funding round data.
Can I buy WindBorne Systems stock?
WindBorne Systems shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was WindBorne Systems's last funding round?
WindBorne Systems's most recent funding round was Series B on August 5, 2026.
Who are the main investors in WindBorne Systems?
Key investors in WindBorne Systems include Khosla Ventures, Galvanize Climate Solutions, Footwork.
Will WindBorne Systems IPO soon?
No public IPO plans have been announced for WindBorne Systems.
How can I track WindBorne Systems secondary market activity?
Caplight tracks bids, offers, and trades in WindBorne Systems's shares on secondary markets.