United States · 
Who invested in Circle Pharma?
Circle Pharma's investors include Eli Lilly, Mission Bay Capital, RA Capital Management, Pfizer and Mission BioCapital.
2014201620182020202220242026
?Seed$4.5MSeries A$90MSeries D$93MSeries E
United States · Series E startup
Who invested in Circle Pharma
Funding summaryUpdated 26 Oct 2026
$187Mraised across 4 rounds since 2014, from 4 sources
$4.5MSeries A$90MSeries D$93MSeries E
- Latest round
- Series E, $93MSept 2026
- Investors
- 5
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed Sept 2014
- Biggest round
- $93M Series E · Sept 2026
- Usual gap between rounds
- 2.3 years the median of 3
The rounds
- Sept 2026
- Sept 2024Series D$90M2 new
Source recordedSEC filing: $63M sold, first sale Jun 2024
- Dec 2016Series A$4.5M1 returning
Reported by FinSMEsSEC filing: $3.8M sold, first sale Sept 2016
- Sept 2014
Founders and team
From Circle Pharma's own website: 9 on the team.
- Bryan M. LentChief Financial Officer
- Rob LauzenChief Financial Officer
- Carlos ChavezExecutive Director, Head of Facilities and Research Operations
- David DiazExecutive Director, Head of DMPK/ Clinical Pharmacology/Toxicology
- Denise PosadaExecutive Director, Head of Data Management
- Carolina RyklanskyDirector, Clinical Scientist
- Jinshu FangAssociate Director, DMPK/Clinical Pharmacology/Toxicology
- Luis HernandezAssociate Director, Research Operations
- Stacey MendozaManager, HR Operations
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Seed2014Series A2016Series D2024Series E2026
Eli Lilly
Mission Bay Capital
RA Capital Management
Pfizer
Mission BioCapital
Eli LillyMission Bay CapitalRA Capital ManagementPfizerMission BioCapitalEveryone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 4 firms list Circle Pharma 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.
Quick answers about Circle Pharma
How much has Circle Pharma raised?
Circle Pharma has raised $187M across 4 rounds since 2014. One round did not disclose an amount, so the total is a floor.
When did Circle Pharma last raise?
Circle Pharma's most recent round was a Series E of $93M in Sept 2026.
What was Circle Pharma's biggest round?
Its most recent round, $93M in Sept 2026, is also its largest on record.
Who backed Circle Pharma first?
Circle Pharma's first round on record, in Sept 2014, was backed by Pfizer and Mission Bay Capital.
What stage is Circle Pharma at?
Circle Pharma's latest named round is a Series E, in Sept 2026.
Where is Circle Pharma based?
Circle Pharma is based in the United States.
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