# RTW Investments LLC's Biotech Investments: 52 Startups in Its Portfolio (2026)

> The 52 Biotech startups RTW Investments LLC has backed, by stage: $11B raised between them. From the rounds we track; updated nightly.

Source: https://millionrounds.com/portfolio-maps/rtw-investments-lp-biotech-portfolio (Millionrounds; every figure on the page links to its filing or article)

## Stage not reported

27

- [Oruka Therapeutics](https://millionrounds.com/company/oruka-therapeutics)
- [Spyre Therapeutics](https://millionrounds.com/company/spyre-therapeutics)
- [Immunic Therapeutics](https://millionrounds.com/company/immunic-therapeutics)
- [Century Therapeutics](https://millionrounds.com/company/century-therapeutics)
- [Belite Bio](https://millionrounds.com/company/belite-bio)
- [Rocket Pharmaceuticals](https://millionrounds.com/company/rocket-pharmaceuticals)
- [Monte Rosa Therapeutics](https://millionrounds.com/company/monte-rosa-therapeutics)
- [MoonLake Immunotherapeutics](https://millionrounds.com/company/moonlake-immunotherapeutics)
- [Rapt Therapeutics](https://millionrounds.com/company/rapt-therapeutics)
- [Roivant Sciences](https://millionrounds.com/company/roivant-sciences)
- [Cogent Biosciences](https://millionrounds.com/company/cogent-biosciences)
- [Crescent Biopharma](https://millionrounds.com/company/crescent-biopharma)
- [Evommune](https://millionrounds.com/company/evommune)
- [*2B* 2seventy bio](https://millionrounds.com/company/2seventy-bio)
- [ITeos Therapeutics](https://millionrounds.com/company/iteos-therapeutics)
- [*AB* ARMO BioSciences](https://millionrounds.com/company/armo-biosciences)
- [Arvinas](https://millionrounds.com/company/arvinas)
- [CARGO Therapeutics](https://millionrounds.com/company/cargo-therapeutics)
- [Pyxis Oncology](https://millionrounds.com/company/pyxis-oncology)
- [SAB Biotherapeutics](https://millionrounds.com/company/sab-biotherapeutics)
- [*OB* Orchestra BioMed](https://millionrounds.com/company/orchestra-biomed)
- [Frequency Therapeutics](https://millionrounds.com/company/frequency-therapeutics)
- [Ensoma](https://millionrounds.com/company/ensoma)
- [*O* Orchard](https://millionrounds.com/company/orchard)

+3 more

## Series B

12

- [Kailera Therapeutics](https://millionrounds.com/company/kailera-therapeutics)
- [Windward Bio](https://millionrounds.com/company/windward-bio)
- [Stoke Therapeutics](https://millionrounds.com/company/stoke-therapeutics)
- [Mirador Therapeutics](https://millionrounds.com/company/mirador-therapeutics)
- [Aktis Oncology](https://millionrounds.com/company/aktis-oncology)
- [Kyverna Therapeutics](https://millionrounds.com/company/kyverna-therapeutics)
- [AIRNA](https://millionrounds.com/company/airna)
- [Tenaya Therapeutics](https://millionrounds.com/company/tenaya-therapeutics)
- [Abdera Therapeutics](https://millionrounds.com/company/abdera-therapeutics)
- [NeuroGastrx](https://millionrounds.com/company/neurogastrx)
- [*LB* Landos Biopharma](https://millionrounds.com/company/landos-biopharma)
- [*AP* Attune Pharmaceuticals](https://millionrounds.com/company/attune-pharmaceuticals)

## Series C and later

8

- [Encoded Therapeutics](https://millionrounds.com/company/encoded-therapeutics)
- [*ZL* Zai Lab](https://millionrounds.com/company/zai-lab)
- [Beta Bionics](https://millionrounds.com/company/beta-bionics)
- [CORXEL Pharmaceuticals](https://millionrounds.com/company/corxel-pharmaceuticals)
- [Science 37](https://millionrounds.com/company/science-37)
- [*NB* Nuance Biotech](https://millionrounds.com/company/nuance-biotech)
- [Lycia Therapeutics](https://millionrounds.com/company/lycia-therapeutics)
- [Nuance Pharma](https://millionrounds.com/company/nuance-pharma)

## Series A

5

- [*CP* CinCor Pharma](https://millionrounds.com/company/cincor-pharma)
- [Ottimo Pharma](https://millionrounds.com/company/ottimo-pharma)
- [Alesta Therapeutics](https://millionrounds.com/company/alesta-therapeutics)
- [Amani Therapeutics](https://millionrounds.com/company/amani-therapeutics)
- [Renovacor](https://millionrounds.com/company/renovacor)

## Segment by segment

### Stage not reported

27 startups · $5.7B raised

- [**Oruka Therapeutics**](https://millionrounds.com/company/oruka-therapeutics) Oruka Therapeutics is advancing innovative biologics to redefine patient care standards in chronic skin diseases. United States $880M
- [**Spyre Therapeutics**](https://millionrounds.com/company/spyre-therapeutics) Spyre Therapeutics is a biotechnology business that is developing a strong pipeline of antibody therapies. United States $678M
- [**Immunic Therapeutics**](https://millionrounds.com/company/immunic-therapeutics) Immunic is a biopharmaceutical company that develops a pipeline of selective oral immunology therapies. United States $400M
- [**Century Therapeutics**](https://millionrounds.com/company/century-therapeutics) Century Therapeutics is a biotechnology company that develops cell therapies for hematological and solid tumor malignancies. United States $385M
- [**Belite Bio**](https://millionrounds.com/company/belite-bio) Belite Bio is a clinical stage biopharmaceutical drug development company. United States $350M
- [**Rocket Pharmaceuticals**](https://millionrounds.com/company/rocket-pharmaceuticals) Rocket Pharmaceuticals is a biotech company that develops a pipeline of genetic therapies for rare childhood disorders. United States $340M
- [**Monte Rosa Therapeutics**](https://millionrounds.com/company/monte-rosa-therapeutics) Monte Rosa Therapeutics is a biotechnology company that develops cancer therapeutics that modulate protein degradation pathways. Switzerland $300M
- [**MoonLake Immunotherapeutics**](https://millionrounds.com/company/moonlake-immunotherapeutics) MoonLake Immunotherapeutics is a clinical-stage biopharmaceuticals company. Switzerland $275M

### Series B

12 startups · $2.5B raised

- [**Kailera Therapeutics**](https://millionrounds.com/company/kailera-therapeutics) Kailera Therapeutics develops next-generation injectable and oral therapies for chronic weight management. United States $600M
- [**Windward Bio**](https://millionrounds.com/company/windward-bio) Windward Bio is a clinical-stage biotechnology company with deep discovery, development, and commercialization expertise committed Switzerland $365M
- [**Stoke Therapeutics**](https://millionrounds.com/company/stoke-therapeutics) Stoke is developing antisense oligonucleotide medicines that target RNA splicing to increase gene expression for treatment. United States $255M
- [**Mirador Therapeutics**](https://millionrounds.com/company/mirador-therapeutics) Mirador Therapeutics is a clinical-stage precision medicine company based in San Diego, California. United States $250M
- [**Aktis Oncology**](https://millionrounds.com/company/aktis-oncology) Aktis Oncology is a biotechnology company discovering and developing a novel class of targeted radiopharmaceuticals. United States $175M
- [**Kyverna Therapeutics**](https://millionrounds.com/company/kyverna-therapeutics) Kyverna Therapeutics is pioneering a new class of therapies and cures for serious autoimmune diseases. United States $160M
- [**AIRNA**](https://millionrounds.com/company/airna) AIRNA is a biotechnology company founded in 2021, focused on discovering and developing RNA editing therapeutics. United States $155M
- [**Tenaya Therapeutics**](https://millionrounds.com/company/tenaya-therapeutics) Tenaya Therapeutics is a developer of novel therapies designed to offer treatment for heart disease. United States $152M

### Series C and later

8 startups · $2.1B raised

- [**Encoded Therapeutics**](https://millionrounds.com/company/encoded-therapeutics) Encoded Therapeutics is a Harnessing the regulatory genome to create next-generation molecular therapies. United States $379M
- [*ZL* **Zai Lab**](https://millionrounds.com/company/zai-lab) China $310M
- [**Beta Bionics**](https://millionrounds.com/company/beta-bionics) Beta Bionics is a biotechnology company that develops an integrated bionic pancreas system called the iLet. United States $296M
- [**CORXEL Pharmaceuticals**](https://millionrounds.com/company/corxel-pharmaceuticals) CORXEL Pharmaceuticals is a clinical-stage biopharmaceutical company founded in 2019, previously known as JiXing Pharmaceuticals. United States $287M
- [**Science 37**](https://millionrounds.com/company/science-37) Science 37 is a clinical research company that facilitates universal participation in clinical trials for patients and providers. United States $236M
- [*NB* **Nuance Biotech**](https://millionrounds.com/company/nuance-biotech) Nuance Biotech is a pharmaceutical company Based In China. China $201M
- [**Lycia Therapeutics**](https://millionrounds.com/company/lycia-therapeutics) Lycia Therapeutics is a clinical-stage biotechnology company based in South San Francisco, California. United States $182M
- [**Nuance Pharma**](https://millionrounds.com/company/nuance-pharma) Nuance Pharma is a specialty biopharmaceutical company based in Shanghai, founded in 2014 by Mark Lotter. China $181M

### Series A

5 startups · $583M raised

- [*CP* **CinCor Pharma**](https://millionrounds.com/company/cincor-pharma) CinCor is a clinical-stage biopharmaceutical company that develops treatments for cardiovascular diseases. United States $275M
- [**Ottimo Pharma**](https://millionrounds.com/company/ottimo-pharma) Ottimo Pharma is a private, clinical-stage biotechnology company based in Sandwich, Kent, United Kingdom. United Kingdom $140M
- [**Alesta Therapeutics**](https://millionrounds.com/company/alesta-therapeutics) Alesta Therapeutics focused on translating novel targets in the chronic stress response pathways into new therapeutic. Netherlands $67M
- [**Amani Therapeutics**](https://millionrounds.com/company/amani-therapeutics) Amani Therapeutics is a biotechnology company based in New York, founded in 2025. United States $60M
- [**Renovacor**](https://millionrounds.com/company/renovacor) No mercado desde 2009, a Renovacor Tintas se diferencia pela fabricação de tintas e revestimentos acrílicos de qualidade que conta United States $41M

**How this map is made.** Every startup here works in Biotech and has raised money in a round we track that names RTW Investments LLC as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.

## More portfolio maps

[All portfolios](https://millionrounds.com/portfolio-maps)

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