# CStone Pharmaceuticals funding: rounds and investors

> CStone Pharmaceuticals has raised $60M across 1 round since 2025. Investors include HSG, ARCH Venture Partners and Hill House Capital.

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

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

# Who invested in *CStone Pharmaceuticals*

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

**$60M** raised across 1 round since 2025, from 1 source

- **Latest round:** Round, $60M Jul 2025
- **Investors:** 3

See who backed them

## The rounds

- **Jul 2025** Round **$60M** [HSG](https://millionrounds.com/fund/hsg) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Hill House Capital](https://millionrounds.com/fund/hill-house-capital) Source recorded

## Everyone who backed them

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

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

[Hill House Capital](https://millionrounds.com/fund/hill-house-capital) Family office **1** round

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

## Quick answers about CStone Pharmaceuticals

### Who invested in CStone Pharmaceuticals?

CStone Pharmaceuticals's investors include HSG, ARCH Venture Partners and Hill House Capital.

### How much has CStone Pharmaceuticals raised?

CStone Pharmaceuticals has raised $60M across 1 round since 2025.

### When did CStone Pharmaceuticals last raise?

CStone Pharmaceuticals's most recent round was an Undisclosed round of $60M in Jul 2025.

### What was CStone Pharmaceuticals's biggest round?

Its most recent round, $60M in Jul 2025, is also its largest on record.

### Who backed CStone Pharmaceuticals first?

CStone Pharmaceuticals's first round on record, in Jul 2025, was backed by HSG, ARCH Venture Partners and Hill House Capital.

### What stage is CStone Pharmaceuticals at?

CStone Pharmaceuticals's latest named round is an Undisclosed round, in Jul 2025.

## Companies like CStone Pharmaceuticals

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

[**Cloverleaf Bio** $33M · Sept 2026](https://millionrounds.com/company/cloverleaf-bio)[**Cheiron** $8.0M · Jul 2026](https://millionrounds.com/company/cheiron)[**Tavo Biotherapeutics** $17M · Jun 2026](https://millionrounds.com/company/tavo-biotherapeutics)[**Countable Labs** $26M · May 2026](https://millionrounds.com/company/countable-labs)[**Oricell Therapeutics** $180M · Apr 2026](https://millionrounds.com/company/oricell-therapeutics)[**Immunofoco** $29M · Mar 2026](https://millionrounds.com/company/immunofoco)

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