Castlerock Biofuels
Millinocket, US · Founded 2024 · 2 known investors
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Castle Rock Biofuels produces renewable fuels from biomass feedstocks for transportation and energy markets.
Founders & leadership
JM
John MurphyManaging Director, CEO
BY

Bruce YorkChief Development OfficerHe has spent over 25 years working in the energy sector across Fortune 500 companies and venture-backed startups.
Investors · 2
Khasma Capital✓ confirmed by Castlerock BiofuelsBrooklyn
How we know: the company's own site · Khasma Capital's portfolio page · funding news · Not right? Tell us
Also in the syndicate · 1
Nexus Development Capital, LLC
Reported raises · per SEC filings
Form D private placements$7.8M disclosed across 1 round · 2024
▶$7.8MraisedJun 2025 · 1 investors · ManufacturingRule 506(b)
▶$7.8MraisedJun 2025 · 1 investors · Manufacturing
Rule 506(b)Officers, directors & promoters on the filing
- John MurphyExecutive Officer
- Offering amount
- $8.5M
- Amount sold
- $7.8M
- Minimum investment
- $1M
- First sale
- Jul 2024
- Incorporated
- Limited Liability Company, Delaware, 2024
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Frequently asked questions
- What does Castlerock Biofuels do?
- Castle Rock Biofuels produces renewable fuels from biomass feedstocks for transportation and energy markets.
- Who are Castlerock Biofuels's investors?
- Castlerock Biofuels's investors include Khasma Capital.
- How much funding has Castlerock Biofuels raised?
- Castlerock Biofuels has disclosed $7.8M raised across 1 round.
- Where is Castlerock Biofuels headquartered?
- Castlerock Biofuels is headquartered in Millinocket, US.

