United States · Venture startup

Who invested in Interius BioTherapeutics

2 rounds we have observed, with the 4 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.

Pharma

Funding summaryUpdated 26 Oct 2026

$73Mraised across 2 rounds since 2024, from 2 sources

$51MSeries B$22MVenture
Latest round
Venture, $22MJan 2025
Biggest round
$51MSeries B · Jun 2024
Investors
4
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.

2025
$51MSeries B$22MVenture
First round
Series B, $51M
Jun 2024
Biggest round
$51M
Series B · Jun 2024
Between rounds
7 months
from the last two

The rounds

  1. Jan 2025
  2. Jun 2024
    Series B$51M3 new

    Source recordedSEC filing: $51M sold, first sale May 2024

Founders and team

From the SEC filings it signed: 2 on the team.

  • Dora R. MitchellExecutive Officeri
  • Philip R. JohnsonExecutive Officer, Directori

On the board, as filediBihua O. ChenLeon R. MoulderTomas R. Kiselak

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

RA Capital ManagementPrivate equity2rounds
Cormorant Asset ManagementPrivate equity2rounds
Longwood FundVC firm2rounds
Bain Capital Life SciencesPrivate equity1round

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

Quick answers about Interius BioTherapeutics

Who invested in Interius BioTherapeutics?

Interius BioTherapeutics's investors include RA Capital Management, Cormorant Asset Management, Longwood Fund and Bain Capital Life Sciences.

How much has Interius BioTherapeutics raised?

Interius BioTherapeutics has raised $73M across 2 rounds since 2024.

When did Interius BioTherapeutics last raise?

Interius BioTherapeutics's most recent round was a Venture of $22M in Jan 2025.

What was Interius BioTherapeutics's biggest round?

Interius BioTherapeutics's largest round on record is $51M (Series B), in Jun 2024.

Who backed Interius BioTherapeutics first?

Interius BioTherapeutics's first round on record, in Jun 2024, was backed by RA Capital Management, Cormorant Asset Management and Longwood Fund.

What stage is Interius BioTherapeutics at?

Interius BioTherapeutics's latest named round is a Venture, in Jan 2025.

Where is Interius BioTherapeutics based?

Interius BioTherapeutics is based in the United States.

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