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Third Sphere
Third Sphere is a climate-focused venture fund that has helped shape early-stage climate investing for over a decade. With nearly 100 portfolio companies,...
Overview
Third Sphere is a climate-focused venture fund that has helped shape early-stage climate investing for over a decade. With nearly 100 portfolio companies, about two-thirds of its thesis focuses on mitigation (mostly via electrification) and one-third on resilience and adaptation. It backs founders building hardware-enabled solutions (80% of the portfolio), usually with software components, and concentrates on pre-seed and seed stages with typical initial checks of $250,000 to $1 million.
General information
Firm type
Private Equity
Year founded
2013
Location
Region
North America
Country
United States
City
Santa Monica
Corporate office
New York, NY, United States
Principals
Shaun Abrahamson
Managing Partner
Stonly Baptiste
Managing Partner
Tim He
Managing Partner
Sector focus
Frequently asked questions
How is Third Sphere different from a generalist seed fund?
Third Sphere applies a thematic lens that demands fluency in physical-world systems — building codes, grid interconnection, urban land-use regulation — alongside typical software diligence. The partnership has been working at this intersection since 2013, giving it a sourcing network and technical due-diligence capability that pure software funds rarely build.
Which sectors does Third Sphere explicitly avoid?
Third Sphere's published focus is exclusively on climate technology, specifically the intersection of digital solutions with energy, mobility, industrial systems, and the built environment. The firm does not invest in pure software-as-a-service companies without a physical-world emissions impact pathway, nor in consumer internet, fintech, biotech, or media.
Does Third Sphere participate in fund commitments or only direct deals?
Third Sphere operates as a direct venture investor and does not publicly disclose a fund-of-funds or LP commitment strategy. Its model is to lead or co-lead equity rounds in early-stage companies, with reserve capital for follow-on investments.
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