# Arpeggio Bio funding: rounds and investors

> Arpeggio Bio has raised $20M across 1 round since 2025. Investors include Y Combinator, Khosla Ventures and Tengxun Touzi. Every round with its source.

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

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

# Who invested in *Arpeggio Bio*

One round we have observed, with the 5 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 12 months ago

Funding summary Updated 26 Oct 2026

**$20M** raised across 1 round since 2025, from 2 sources

- **Latest round:** Venture, $20M Nov 2025
- **Investors:** 5

See who backed them

## The rounds

- **Nov 2025** Venture **$20M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) [Builders VC](https://millionrounds.com/fund/builders-vc) [Fifty Years](https://millionrounds.com/fund/fifty-years-industries-llc) Source recorded and 1 other SEC filing: $20M sold, first sale Nov 2025

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) VC firm **1** round

[Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) VC firm **1** round

[Builders VC](https://millionrounds.com/fund/builders-vc) VC firm **1** round

[Fifty Years](https://millionrounds.com/fund/fifty-years-industries-llc) VC firm **1** round

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

## Also claim to have backed them

This firm lists Arpeggio Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Ms2 Capital](https://millionrounds.com/fund/ms2-capital) Family office Per its own site

## Quick answers about Arpeggio Bio

### Who invested in Arpeggio Bio?

Arpeggio Bio's investors include Y Combinator, Khosla Ventures, Tengxun Touzi, Builders VC and Fifty Years.

### How much has Arpeggio Bio raised?

Arpeggio Bio has raised $20M across 1 round since 2025.

### When did Arpeggio Bio last raise?

Arpeggio Bio's most recent round was a Venture of $20M in Nov 2025.

### What was Arpeggio Bio's biggest round?

Its most recent round, $20M in Nov 2025, is also its largest on record.

### Who backed Arpeggio Bio first?

Arpeggio Bio's first round on record, in Nov 2025, was backed by Y Combinator, Khosla Ventures and Tengxun Touzi and 2 others.

### What stage is Arpeggio Bio at?

Arpeggio Bio's latest named round is a Venture, in Nov 2025.

### Where is Arpeggio Bio based?

Arpeggio Bio is based in the United States.

## Companies like Arpeggio Bio

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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