# Treeline Biosciences funding: rounds and investors

> Treeline Biosciences has raised $200M across 1 round since 2025. Investors include OrbiMed, Fidelity and ARCH Venture Partners. Every round with its source.

Source: https://millionrounds.com/company/treeline-biosciences (Millionrounds; every figure on the page links to its filing or article)

United States · [Series A startup](https://millionrounds.com/companies)

# Who invested in *Treeline Biosciences*

One round we have observed, with the 3 investors named in it. 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 summary Updated 26 Oct 2026

**$200M** raised across 1 round since 2025, from 1 source

- **Latest round:** Series A, $200M Sept 2025
- **Investors:** 3

See who backed them

## The rounds

- **Sept 2025** Series A **$200M** [OrbiMed](https://millionrounds.com/fund/orbimed) [Fidelity](https://millionrounds.com/fund/fidelity) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) Source recorded SEC filing: $200M sold, first sale Aug 2025

## Everyone who backed them

[OrbiMed](https://millionrounds.com/fund/orbimed) Private equity **1** round

[Fidelity](https://millionrounds.com/fund/fidelity) VC firm **1** round

[ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=treeline-biosciences).

## Quick answers about Treeline Biosciences

### Who invested in Treeline Biosciences?

Treeline Biosciences's investors include OrbiMed, Fidelity and ARCH Venture Partners.

### How much has Treeline Biosciences raised?

Treeline Biosciences has raised $200M across 1 round since 2025.

### When did Treeline Biosciences last raise?

Treeline Biosciences's most recent round was a Series A of $200M in Sept 2025.

### What was Treeline Biosciences's biggest round?

Its most recent round, $200M in Sept 2025, is also its largest on record.

### Who backed Treeline Biosciences first?

Treeline Biosciences's first round on record, in Sept 2025, was backed by OrbiMed, Fidelity and ARCH Venture Partners.

### What stage is Treeline Biosciences at?

Treeline Biosciences's latest named round is a Series A, in Sept 2025.

### Where is Treeline Biosciences based?

Treeline Biosciences is based in the United States.

## Companies like Treeline Biosciences

In the same sector, and raised in the last eighteen months.

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)

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