United States · Venture startup

Who invested in Primrose Bio

2 rounds we have observed, with the one investor named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Raised 2 months ago

Funding summaryUpdated 26 Oct 2026

$17Mraised across 2 rounds since 2024, from 2 sources

$15MVenture$2.0MVenture

Latest round: Venture, $2.0MSept 2026
Biggest round: $15MVenture · Jul 2024
Investors: 1

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20252026

$15MVenture$2.0MVenture

First round: Venture, $15M
Biggest round: $15M
Between rounds: 2.2 years

The rounds

Sept 2026
Venture$2.0M1 returning
- National Science Foundation
Source recorded
Jul 2024
Venture$15M1 new
- National Science Foundation
Source recordedSEC filing: $15M sold, first sale Jun 2024

Founders and team

From Primrose Bio's own website: 21 on the team.

Drew BurchChief Executive Officer
Simon LatimerChief Financial Officer
Louis J. CantolupoVP, Business Development
Adam ChapmanPrincipal Scientist
Alec TzianabosManager, Business Development
Barbara FreyAssociate Scientist
Bill ColbySenior Director Operations
Blake TrialProject Manager
Carl PosadasQuality Manager
James GaleBoard Member
Jason PaynePrincipal Scientist
Jennifer WittboldAssociate Director, Product & BD
Laila HalimSenior Research Associate
Lauren HayBoard Member
Lindsey JaschAssociate Scientist
Matt ReberBoard Member
Michael BacicaPrincipal Scientist
Robert LasalaFacilities Manager

And 3 more on the team.

AdvisersDeborah Day BarbaraKhaled Yamout

Everyone who backed them

National Science FoundationGovernment2rounds

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 2 firms list Primrose Bio as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.