# RayThera funding: rounds and investors

> RayThera has raised $110M across 1 round since 2025. Investors include OrbiMed and Foresite Capital. Every round with its source.

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

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

# Who invested in *RayThera*

One round we have observed, with the 2 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

**$110M** raised across 1 round since 2025, from 1 source

- **Latest round:** Series A, $110M Apr 2025
- **Investors:** 2

See who backed them

## The rounds

- **Apr 2025** Series A **$110M** [OrbiMed](https://millionrounds.com/fund/orbimed) [Foresite Capital](https://millionrounds.com/fund/forsite-capital) Source recorded

## Everyone who backed them

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

[Foresite Capital](https://millionrounds.com/fund/forsite-capital) Private equity **1** round

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

## Quick answers about RayThera

### Who invested in RayThera?

RayThera's investors include OrbiMed and Foresite Capital.

### How much has RayThera raised?

RayThera has raised $110M across 1 round since 2025.

### When did RayThera last raise?

RayThera's most recent round was a Series A of $110M in Apr 2025.

### What was RayThera's biggest round?

Its most recent round, $110M in Apr 2025, is also its largest on record.

### Who backed RayThera first?

RayThera's first round on record, in Apr 2025, was backed by OrbiMed and Foresite Capital.

### What stage is RayThera at?

RayThera's latest named round is a Series A, in Apr 2025.

### Where is RayThera based?

RayThera is based in the United States.

## Companies like RayThera

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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