Bound4blue
PrivateLast Round
Series B
Dec 9, 2025
Total Funding Raised
$75.95M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Bound4blue is a clean technology company that develops automated wind-assisted propulsion systems, known as eSAILs®, to help shipowners reduce fuel costs and emissions.
Sector
Energy & Sustainability
Verticals
Maritime & Shipping, Clean Transportation, Energy Management
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Bound4blue Comps
Public and private peers based on sector, stage, and business model.
| Company | Status | Est. Valuation | Rev Multiple |
|---|---|---|---|
| OpenAI | Private | $86.0B | ~40x |
| Cohere | Private | $5.0B | -- |
| Competitor 1 | Public | $XX.XB | XXx |
| Competitor 2 | Public | $XX.XB | XXx |
Bound4blue Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Dec 9, 2025 | ||||
| Series A | Sep 7, 2023 | ||||
| Grant | Dec 12, 2022 | ||||
| VC Round | Jun 30, 2021 | ||||
| Grant | Jun 16, 2021 | ||||
Grant | Aug 1, 2020 |
Key People
Founding team and executive leadership
Bound4blue Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Sun Returns SL | Series A |
| European Climate, Infrastructure and Environment Executive Agency | Grant |
| CDTI Innvierte | VC Round |
| Kai Capital Markets | Series B, Series A |
| Motion Ventures | Series B |
| Arcano Partners | VC Round |
| Sustainable Ocean Alliance | Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 30, 2026
Signed Maersk Tankers as a new client.
- Apr 22, 2026
Completed installation of two suction sails for Klaveness Combination Carriers.
Bound4blue Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Bound4blue's valuation, stock price, and market status.