# Kalaris Therapeutics funding: rounds and investors

> Kalaris Therapeutics has raised $50M across 1 round since 2025. Investors include Fidelity, Redmile Group and Samsara BioCapital. Every round with its source.

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

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

# Who invested in *Kalaris Therapeutics*

One round we have observed, with the 4 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

Raised 11 months ago

Funding summary Updated 26 Oct 2026

**$50M** raised across 1 round since 2025, from 1 source

- **Latest round:** Round, $50M Dec 2025
- **Investors:** 4

See who backed them

## The rounds

- **Dec 2025** Round **$50M** [Fidelity](https://millionrounds.com/fund/fidelity) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [RTW Investments LLC](https://millionrounds.com/fund/rtw-investments-lp) Source recorded

## Everyone who backed them

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

[Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **1** round

[Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) VC firm **1** round

[RTW Investments LLC](https://millionrounds.com/fund/rtw-investments-lp) Growth equity **1** round

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

## Quick answers about Kalaris Therapeutics

### Who invested in Kalaris Therapeutics?

Kalaris Therapeutics's investors include Fidelity, Redmile Group, Samsara BioCapital and RTW Investments LLC.

### How much has Kalaris Therapeutics raised?

Kalaris Therapeutics has raised $50M across 1 round since 2025.

### When did Kalaris Therapeutics last raise?

Kalaris Therapeutics's most recent round was an Undisclosed round of $50M in Dec 2025.

### What was Kalaris Therapeutics's biggest round?

Its most recent round, $50M in Dec 2025, is also its largest on record.

### Who backed Kalaris Therapeutics first?

Kalaris Therapeutics's first round on record, in Dec 2025, was backed by Fidelity, Redmile Group and Samsara BioCapital and 1 others.

### What stage is Kalaris Therapeutics at?

Kalaris Therapeutics's latest named round is an Undisclosed round, in Dec 2025.

### Where is Kalaris Therapeutics based?

Kalaris Therapeutics is based in the United States.

## Companies like Kalaris Therapeutics

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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