Fundraising FoxJohnston Associates Inc.
Venture capitalPrinceton · Seed · 1 people tracked
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Investment thesis
JAI provides seed capital and hands-on managerial and technical support to early-stage healthcare, pharmaceutical, and biotechnology companies. It launches companies around unique, commercially promising technologies and also finances more established small companies with growth potential. The firm invests its own private capital and does not manage a fund, so it has no fixed horizons, return targets, or size limits. Because startups are time-consuming, JAI typically invests in roughly one enterprise per year. It leverages an extensive network across academia, venture capital, and medical communities to secure ongoing capital, R&D, regulatory, and personnel support, applying stringent criteria on science, market potential, uniqueness, and co-founder quality.
Source: firm website, verified Sep 20, 2026.
Team · 1 people
from public directories
What they invest in
from 3 of 19 portfolio companiesBiotech ×3Deep Tech ×2AI & Machine Learning ×1Healthtech ×1
HQs:United States×1
Investments · 19 tracked
founders shown can be your intro path
Macrotope engineers protein antigens using its patented MacroAntigen/MAV platform, which tunes antigen conformational dynamics to broaden immune response for vaccine and therapeutic antibody discovery.
AI & Machine LearningBiotechDeep TechHealthtechPrinceton, US
Stephen Anderson(Co-founder & Chief Executive Officer)inElliot Campbell(Co-founder & Chief Science Officer)inElliot Camptbell(Executive Officer, Director)
Specialty pharmaceutical company focused on purification of isomers and metabolites, markets Lunesta and Xopenex; acquired by Dainippon Sumitomo Pharma in 2009.
PartnerRobert Johnston· solo GP
Co-investorsNew Enterprise Associates (NEA)Venrock
Zywie is a therapeutics company developing small-molecule treatments, including pharmacological chaperones and deuterated and halogenated forms of Ambroxol, for metabolic and neurodegenerative Lysosomal Storage Diseases (LSDs).
BiotechDeep Tech
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
BiocyteCerus EndovascularCytogenEcogenEnvirogenGenexi-STATImmuniconJDS TherapeuticsNeueRePharmaStemPharmosPraeluxSonomedTargent, LLCVelaPharm
Frequently asked questions
- How many investments has Johnston Associates Inc. made?
- Johnston Associates Inc. has 19 tracked investments.
- What stage does Johnston Associates Inc. invest at?
- Johnston Associates Inc. invests at the Seed stage.
- What is Johnston Associates Inc.'s typical check size?
- Johnston Associates Inc. typically writes checks of $300K – $3M.
- What sectors does Johnston Associates Inc. focus on?
- Johnston Associates Inc. focuses on Biotech, Cleantech, Digital Health, Healthtech, Medical Devices.
- Where is Johnston Associates Inc. located?
- Johnston Associates Inc. is headquartered in Princeton, US.
- Does Johnston Associates Inc. lead rounds?
- Yes, Johnston Associates Inc. leads investment rounds.
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