A company leader posted that Parallel Bio's San Diego team/site was recently closed due to a shift in business priorities.
SourceUsing the immune system to cure disease
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Parallel Bio is a biotechnology startup building human-first drug discovery tools that use patient-derived immune organoids, AI, and lab automation to predict how therapies will perform in diverse human biology, reduce reliance on animal testing, and support pharma partnerships plus its own cancer and autoimmune drug pipeline.
Primary product
Clinical Trial in a Dish: a human immune organoid platform for drug discovery and preclinical testing.
Founded
2021
Headquarters
Brisbane, CA, United States (San Francisco Bay Area)
Team size
20-30
Industry
Biotechnology
Sub-industry
Drug discovery / human organoid preclinical testing
Offices
Business model
Stage
Series A
Total raised
$25.6M
Latest round
Series A · Jun 2025
Latest amount
$21M
Jun 2025 · AIX Ventures
Dec 2022 · Refactor Capital
Jul 2021 · Y Combinator
Leadership
Co-Founder & Co-CEO
Co-Founder & Co-CEO
Director of Talent Acquisition
Director of Biobanking
Head of Technical Operations
VP of Science
Director, Stem Cell R&D
VP of Finance and Operations
Investors
Mission-driven and interdisciplinary, with an emphasis on scientists and engineers working closely together; the company explicitly describes itself as building a team of 'dreamers and doers' and recently brought computational and biological teams together under one Bay Area roof.
Visa sponsorship
Limited
Compensation
Public job postings show high-end biotech compensation: Office Manager at $86K-$102K, Head of Sales at $160K-$190K with $260K-$340K+ OTE, Head of Platform at $255K-$284K, and Head of Biology at $280K-$305K. Some openings are marked US citizen/visa only, suggesting limited sponsorship.
Pricing
Custom enterprise/B2B partnership pricing for pharma testing and preclinical discovery work; public pricing is not disclosed.
Differentiators
Technology
Customers
Competitors
Estimated revenue
$1M-$10M
A company leader posted that Parallel Bio's San Diego team/site was recently closed due to a shift in business priorities.
SourceParallel Bio blog · Jun 2026
The company said it unified computational and biological teams under one Bay Area roof and highlighted new advisors and hiring in the region.
Business Wire · Jun 2026
Parallel Bio said it was centering U.S. operations at its San Francisco Bay Area headquarters in Brisbane, CA, and named five advisors spanning immunology, AI, drug development, and cybersecurity.
Parallel Bio blog · Jun 2026
Parallel Bio said the World Economic Forum named it a 2026 Technology Pioneer and described its human lymph node organoid platform and regulatory thesis.
R&D World · Feb 2026
R&D World reported that Parallel Bio was moving beyond only partnering with pharma and beginning to build its own drug-development pipeline while the FDA increasingly backs alternatives to animal testing.
Business Wire · Jun 2025
Parallel Bio raised a $21 million Series A led by AIX Ventures and said it had eight pharmaceutical partners, including three Fortune 500 companies, testing 50+ drugs and immunotherapies on its platform.