Photon Marine
PrivateLast Round
Grant
Oct 20, 2025
Est. Valuation
$20M
Total Funding Raised
$12.3M
Company Overview
Photon Marine operates in Energy & Sustainability and is based in Portland, Oregon. Its latest recorded funding round was a Grant round in October 2025.
Photon Marine is a climate tech company that develops commercial marine electric propulsion systems designed to reduce emissions and operational inefficiencies in workboat fleets.
Sector
Energy & Sustainability
Verticals
Clean Transportation, Maritime & Shipping, Energy Storage, Fleet Management, Electric Vehicles
Business Model
B2B
Customer Profile
Hardware Sales, Hardware + Subscription
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Photon Marine Comparables
Compare Photon Marine with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| ACEL Power | 87% | |
| Flux Marine | 86% | |
| Evoy | 85% |
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Photon Marine Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Oct 20, 2025 | ||||
| Series A | Mar 18, 2025 | ||||
| Grant | Sep 17, 2024 | ||||
| Seed | Apr 25, 2023 | ||||
| Seed | Nov 8, 2022 |
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Key People
Founding team and executive leadership
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Photon Marine Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Bend Venture Conference | Seed, Grant |
| Ideaship | Seed |
| VertueLab | Seed |
| Climate Capital | Pre Seed, Seed |
| E8 | Seed |
| Washington State Department of Transportation | Grant |
| Builders Vision | Seed |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Jun 20, 2026
Monthly visitors increased 39% MoM.
- May 15, 2026
Monthly visitors increased 59% MoM, reaching 1.4K.
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Recent news
Latest coverage and updates
- is_developingOct 21, 2026
Photon Marine, Inc. is developing ChargeBarge, a 9.7-meter floating battery platform that stores electricity and delivers it to vessels without charging infrastructure; the system is tested in New York alongside a 40-kilowatt marine fast charger and an electric workboat under a $1 million marine-electrification project.
- is_developingOct 14, 2026
Photon Marine, Inc. is developing an integrated electric workboat and mobile charging system for New York waterways after receiving a US$1 million award, combining an electric workboat, marine fast charger, and floating battery platform to deliver charging where fixed infrastructure is unavailable.
- receives_financingSep 28, 2026
Photon Marine, Inc. received financing of $1M on Sep 28th '26.
- is_developingSep 28, 2026
Photon Marine, Inc. will develop a fleet-electrification playbook designed to help other operators evaluate and deploy similar systems.
- receives_awardSep 27, 2026
Photon Marine, Inc. is the first company to receive a MegaBoost award from the NSF Energy Storage Engine in New York on Sep 27th '26.
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Photon Marine 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 Photon Marine's valuation, stock price, and market status.
Is Photon Marine a public or private company?
Photon Marine is a private company.
What is the current stock price of Photon Marine?
Photon Marine is a private company, so its shares have no public market price. Caplight tracks Photon Marine's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Photon Marine worth (valuation)?
Photon Marine's valuation is estimated at $20.0M based on funding round data.
Can I buy Photon Marine stock?
Photon Marine shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Photon Marine's last funding round?
Photon Marine's most recent funding round was Grant on October 20, 2025.
Who are the main investors in Photon Marine?
Key investors in Photon Marine include Ideaship.
Will Photon Marine IPO soon?
No public IPO plans have been announced for Photon Marine.
How can I track Photon Marine secondary market activity?
Caplight tracks bids, offers, and trades in Photon Marine's shares on secondary markets.