RA Capital Management closed its first Planetary Health Fund (PHF) with $120 million to invest in high-growth companies that enhance resource access, energy innovation, and industrial efficiency. The fund promotes scalable solutions that support planetary health, drawing on RA Capital’s 20 years of evidence-based investing and company-building experience.
RA Capital’s Planetary Health team invests in capital-efficient companies capable of profitable growth without needing subsidies or policy backing. Key sectors include critical minerals, energy, manufacturing, agriculture, and environmental services.
PHF targets early-stage companies focused on short-term deployment and profitability, measuring progress by market readiness rather than funding rounds, to align with deep-tech market entry strategies.
Led by Managing Partners Brigid O’Brien, PhD, and Kyle Teamey, the team has invested in seven companies as of July 2025, with a pipeline of opportunities and a global advisory network.
Portfolio holdings include innovations in metal recycling (Sortera Technologies and a stealth firm), advanced batteries (AM Batteries), geologic hydrogen (Koloma), energy platforms (Bia Energy, Optivolt), and mining technology (stealth company).
KEY QUOTES:
“This fund represents a natural evolution of our mission to back transformational science and technology to improve human wellbeing. By applying the same rigorous, evidence-based approach to the planetary health space under Brigid’s and Kyle’s leadership, our team can help build enduring companies that address global challenges while delivering strong returns.”
Peter Kolchinsky, Founder and Managing Partner at RA Capital
“Planetary Health’s focus on near-term solutions identified through deep market diligence positions us to scale companies that deliver both meaningful returns and measurable results. Our team combines deep technical expertise with proven company-building capabilities. We don’t just provide capital – we’re active partners that help entrepreneurs navigate everything from technology challenges to regulatory complexity to recruiting and commercial scale-up.”
Brigid O’Brien
“Our proprietary research platform, experience scaling companies with product-market fit, and global experience with complex investments enable us to pursue high-potential opportunities regardless of geography. We love to help entrepreneurs build great companies and we are excited by the opportunities in our pipeline.”
Kyle Teamey
