Prellis Biologics
Prellis Biologics develops an Externalized Immune System platform for antibody discovery and vaccine screening. The Bay Area biotech firm has raised $79M in funding and employs 63 people.
The growth story
Prellis Biologics grew from 36 to 63 employees between 2021 and 2026, raising $79M along the way, most recently a Series C in May 2026.
About
Prellis Biologics sells a platform called EXIS that helps pharmaceutical companies discover antibodies and test vaccines. Its technology aims to streamline drug development by combining multiple immune system applications into one system.
The company has raised $79M, including a Series C round in 2026, with backing from Khosla Ventures and Celesta Capital. Its 63-person team draws heavily from UC Davis, Amgen, and Bristol Myers Squibb.
Founders and leadership
Research is Prellis Biologics' largest function, accounting for 27 of its 63 employees. The company is led by a team with deep ties to UC Berkeley and UC Davis.
The Prellis Biologics org chart
Mike Nohaile (Chief Executive Officer) leads 19 mapped leaders with 2 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Research 33 (+27% YoY), Engineering 7 (+17% YoY), Operations 5 (-17% YoY), Business Development 5 (-17% YoY).
Talent flow
Prellis Biologics recruits heavily from UC Davis, Amgen, and Bristol Myers Squibb. Alumni often move to Cellares and Vivodyne, with some joining Pfizer and Episteme.
Most common previous employers of Prellis Biologics staff: University of California, Davis (4), Amgen (4), Generate:Biomedicines (4), Bristol Myers Squibb (4), Scripps Research (4), University of California, Berkeley (3). Former Prellis Biologics employees most often moved to Cellares (3), Vivodyne (2), Oath Surgical (1), Translational Research Institute for Space Health (1), Episteme (1), Pfizer (1).
Alumni worth knowing
The Prellis Biologics mafia
Prellis Biologics alumni have founded five companies, including Oath Surgical (32 staff) and Circularity Fuels (9 staff).
5Oliver Keown, MD, was Advisor until 2021Fergus Noble, was Consultant until 2021Sajana Weerawardhena, was Software Engineering Intern | True Entrepreneur Corps Fellow until 2018Norman Michael Greenberg, PhD, was Executive Vice President until 2021Maryam Shansab, was Director, Cellular Immunology until 2023Hiring now
Prellis Biologics is currently hiring immunologists to expand its EXIS platform.
Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Prellis Biologics: Research Skills (24), Cell Culture (24), Microsoft Office (23), Molecular Biology (22), Data Analysis (21), Microsoft Excel (21), Polymerase Chain Reaction (PCR) (21), Western Blotting (18).
Where the team actually sits
Prellis Biologics people are concentrated in California, United States (30), San Francisco Bay Area (14), Los Angeles Metropolitan Area (2), United States (1).
Search footprint
Prellis Biologics attracts about 203 organic search visits a month, traffic worth roughly $1K a month if bought through ads. It gained 11 ranking keywords and lost 19 in the last period.
What employees say
- Compensation
- 2.70 / 5
- Career opportunities
- 2.40 / 5
- Senior management
- 2.10 / 5
- Work-life balance
- 2.90 / 5
Frequently asked
Prellis Biologics has 63 employees as of September 2026.
Prellis Biologics has raised $79M in total, most recently a Series C round in May 2026.
Mike Nohaile (Chief Executive Officer) sits at the top of Prellis Biologics's reporting structure, with 2 direct reports.
The most common previous employers of current Prellis Biologics staff are University of California, Davis (4 people), Amgen (4 people), Generate:Biomedicines (4 people).
Former Prellis Biologics employees most often move to Cellares (3), Vivodyne (2), Oath Surgical (1).
At least 5 companies have a founder who previously worked at Prellis Biologics, including Oath Surgical, Circularity Fuels, Preconfigured.
Prellis Biologics attracts about 203 organic search visits a month, worth roughly $1K a month in equivalent ad spend.
The most common skills among Prellis Biologics staff are Research Skills, Cell Culture, Microsoft Office, Molecular Biology, Data Analysis.
Prellis Biologics staff are concentrated in California, United States (30), San Francisco Bay Area (14), Los Angeles Metropolitan Area (2).
Prellis Biologics has about 33 people in Research, up 27% over the past year, as of September 2026.
Prellis Biologics has about 7 people in Engineering, up 17% over the past year, as of September 2026.
Computed from 50 current and 96 former Prellis Biologics profiles, as of September 2026. Source: Crustdata.
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