# Sidewinder Therapeutics funding: rounds and investors

> Sidewinder Therapeutics has raised $137M across 1 round since 2026. Investors include Novartis Venture Fund, Frazier Life Sciences and OrbiMed.

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

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

# Who invested in *Sidewinder Therapeutics*

One round we have observed, with the 9 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 Healthcare Pharma

Raised 7 months ago

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Funding summary Updated 15 Nov 2026

**$137M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series B, $137M Apr 2026
- **Led by:** Novartis Venture Fund and Frazier Life Sciences
- **Investors:** 9 (2 led)

See who backed them

## The rounds

- **Apr 2026** Series B **$137M** [Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) Lead [Frazier Life Sciences](https://millionrounds.com/fund/frazier-life-sciences) Lead [OrbiMed](https://millionrounds.com/fund/orbimed) [DCVC](https://millionrounds.com/fund/data-collective) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [Longwood Fund](https://millionrounds.com/fund/longwood-fund) [Astellas Venture Management](https://millionrounds.com/fund/astellas-venture-management) [Goldman Sachs Alternatives' Life Sciences team](https://millionrounds.com/fund/goldman-sachs-alternatives-life-sciences-team) Reported by Ventureburn

## Founders and team

From Sidewinder Therapeutics's own website: 2 on the team.

- **Michael Mueller** General Counsel
- **Rob McRae** Team

## Everyone who backed them

[Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) Corporate VC **1** round, led 1

[Frazier Life Sciences](https://millionrounds.com/fund/frazier-life-sciences) VC firm **1** round, led 1

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

[DCVC](https://millionrounds.com/fund/data-collective) VC firm **1** round

[Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) VC firm **1** round

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

[Longwood Fund](https://millionrounds.com/fund/longwood-fund) VC firm **1** round

[Astellas Venture Management](https://millionrounds.com/fund/astellas-venture-management) Corporate VC **1** round

[Goldman Sachs Alternatives' Life Sciences team](https://millionrounds.com/fund/goldman-sachs-alternatives-life-sciences-team) Growth equity **1** round

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

## Quick answers about Sidewinder Therapeutics

### Who invested in Sidewinder Therapeutics?

Sidewinder Therapeutics's investors include Novartis Venture Fund, Frazier Life Sciences, OrbiMed, DCVC and Alexandria Real Estate Equities, and 4 more on record. Novartis Venture Fund led its latest round.

### How much has Sidewinder Therapeutics raised?

Sidewinder Therapeutics has raised $137M across 1 round since 2026.

### When did Sidewinder Therapeutics last raise?

Sidewinder Therapeutics's most recent round was a Series B of $137M in Apr 2026, led by Novartis Venture Fund.

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

Its most recent round, $137M in Apr 2026, is also its largest on record.

### Who backed Sidewinder Therapeutics first?

Sidewinder Therapeutics's first round on record, in Apr 2026, was backed by Novartis Venture Fund, Frazier Life Sciences and OrbiMed and 6 others.

### What stage is Sidewinder Therapeutics at?

Sidewinder Therapeutics's latest named round is a Series B, in Apr 2026.

### Where is Sidewinder Therapeutics based?

Sidewinder Therapeutics is based in the United States.

### Who led Sidewinder Therapeutics's rounds?

Novartis Venture Fund led the Series B in 2026.

## Companies like Sidewinder Therapeutics

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

[**VuMedi** $142M · Nov 2026](https://millionrounds.com/company/vumedi)[**Zus Health** $73M · Nov 2026](https://millionrounds.com/company/zus-health)[**Betterness** $3.5M · Nov 2026](https://millionrounds.com/company/betterness)[**MedHaul** $4.1M · Nov 2026](https://millionrounds.com/company/medhaul)[**Neuvivo** $1.4M · Nov 2026](https://millionrounds.com/company/neuvivo)[**Sleep.ai** $11M · Nov 2026](https://millionrounds.com/company/sleep-ai)

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