United States · Venture startup

Who invested in Trefoil Therapeutics

2 rounds we have observed, with the 8 investors 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

Funding summaryUpdated 26 Oct 2026

$33Mraised across 2 rounds since 2019, from 2 sources

$28MSeries A$4.6MVenture
Latest round
Venture, $4.6MMay 2025
Biggest round
$28MSeries A · Jul 2019
Investors
8 (1 led)
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.

202020212022202320242025
$28MSeries A$4.6MVenture
First round
Series A, $28M
Jul 2019
Biggest round
$28M
Series A · Jul 2019
Between rounds
5.8 years
from the last two

The rounds

  1. May 2025
    Venture$4.6M1 new2 returning

    Source recordedSEC filing: $4.6M sold, first sale Apr 2025

  2. Jul 2019

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.

Everyone who backed them

Correlation VenturesVC firm2rounds
Bios PartnersPrivate equity1round, led 1
Aju IB InvestmentVC firm1round
Access IndustriesCorporate VC1round
ExSight VenturesVC firm1round

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

Quick answers about Trefoil Therapeutics

Who invested in Trefoil Therapeutics?

Trefoil Therapeutics's investors include Correlation Ventures, Hatteras Venture Partners, Bios Partners, National Institutes of Health and Aju IB Investment, and 3 more on record.

How much has Trefoil Therapeutics raised?

Trefoil Therapeutics has raised $33M across 2 rounds since 2019.

When did Trefoil Therapeutics last raise?

Trefoil Therapeutics's most recent round was a Venture of $4.6M in May 2025.

What was Trefoil Therapeutics's biggest round?

Trefoil Therapeutics's largest round on record is $28M (Series A), in Jul 2019, led by Bios Partners.

Who backed Trefoil Therapeutics first?

Trefoil Therapeutics's first round on record, in Jul 2019, was backed by Bios Partners, Correlation Ventures and Hatteras Venture Partners and 4 others.

What stage is Trefoil Therapeutics at?

Trefoil Therapeutics's latest named round is a Venture, in May 2025.

Where is Trefoil Therapeutics based?

Trefoil Therapeutics is based in the United States.

Who led Trefoil Therapeutics's rounds?

Bios Partners led the Series A in 2019.

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