Schooner Capital
Crossover fundBoston ยท SeedโLate Stage ยท 17 people tracked
Investment thesis
Schooner Capital invests across sectors, stages, and geographies in both private companies and public securities, leveraging an evergreen capital base and 55-year track record. The firm emphasizes independent judgment, contrarian thinking, and patient capital, with a willingness to make multiple investments in the same holdings and develop deep partnerships with management teams. Its permanent capital structure and entrepreneurial origins enable opportunistic investing without the constraints of typical fundraising cycles.
Source: firm website, verified Jul 21, 2026.
Team ยท 17 people
from the firm's websiteFounder and Chairman of Schooner Capital since 1971, with five decades of investment management experience. Previously served as director of Iron Mountain, a $30+ billion records management company he acquired and scaled, and Continental Cablevision, and founded National Hydro and Arch Mobile Communications. Established The Schooner Foundation in 1996 focused on human rights initiatives.
What they invest in
from 6 of 32 portfolio companiesAI & Machine Learning ร2Biotech ร2Data & Infrastructure ร2Deep Tech ร2Cleantech ร1Climate Tech ร1Cloud Computing ร1Digital Health ร1
HQs:United Statesร2Irelandร1
Investments ยท 32 tracked
founders shown can be your intro pathCartesian Therapeutics develops mRNA-based cell therapies for autoimmune diseases. The company is a clinical-stage biotech firm focused on advancing immunology treatments through its proprietary mRNA platform.
BiotechHealthtech
Commonwealth Fusion Systems develops commercial fusion power plants using high-temperature superconducting magnet technology to provide grid-scale energy.
CleantechClimate TechDeep TechEnergyUnknown, US
Brandon Sorbom(Founder)Unknown
Congruity360 provides unstructured data management and governance software for enterprises managing large, dispersed datasets across multiple storage systems. The platform enables data classification, quality improvement, cost optimization, and migration at petabyte scale across cloud and on-premises infrastructure.
AI & Machine LearningCloud ComputingData & InfrastructureEnterprise SoftwareFall River, US
Cullinan Therapeutics develops clinical-stage T cell engager therapies targeting autoimmune diseases and cancer, leveraging immune modulation expertise to advance high-impact therapeutic candidates.
BiotechDigital Health
Manna operates an air delivery service using drone technology to deliver medical equipment, food, and other goods, with plans to reduce traffic and improve air quality in urban areas.
Deep TechLogistics & Supply ChainMobility & Transportation
Ottometric provides a cloud-based data platform for developing driver-assistance and autonomous vehicle systems, automating validation workflows and transforming test data into actionable insights for automotive OEMs and suppliers.
AI & Machine LearningData & InfrastructureSaaS
Frequently asked questions
- What stage does Schooner Capital invest at?
- Schooner Capital invests at the Seed, Late Stage stages.
- What sectors does Schooner Capital focus on?
- Schooner Capital focuses on Sector Agnostic.
- Where is Schooner Capital located?
- Schooner Capital is headquartered in Boston, US.
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