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RTW Investments, LP

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

219

Stocks Covered

89

Latest Filing

Nov 14, 2025

Filings

Dyne Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

5.1%

5.2M shares

Geron Corporation

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Apogee Therapeutics, Inc.

SC 13G · Feb 14, 2025

6.0%

2.7M shares

Taysha Gene Therapies, Inc.

SC 13G/A · Feb 14, 2025

5.9%

12.4M shares

Axsome Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

8.4%

4.1M shares

Arvinas, Inc.

SC 13G/A · Nov 14, 2024

4.1%

2.8M shares

Immunic, Inc.

SC 13G/A · Nov 14, 2024

6.1%

5.6M shares

ESSA Pharma Inc.

SC 13G/A · Nov 14, 2024

7.4%

3.3M shares

CARGO Therapeutics, Inc.

SC 13G/A · Nov 14, 2024

10.0%

5.9M shares

Akero Therapeutics, Inc.

SC 13G/A · Nov 14, 2024

8.5%

5.9M shares

Acadia Pharmaceuticals Inc.

SC 13G/A · Nov 14, 2024

8.3%

13.7M shares

89bio, Inc.

SC 13G/A · Nov 14, 2024

7.0%

7.4M shares

UroGen Pharma Ltd.

SC 13G/A · Nov 14, 2024

10.0%

4.9M shares

Ultragenyx Pharmaceutical Inc.

SC 13G/A · Nov 14, 2024

2.1%

2.0M shares

Immunocore Holdings plc

SC 13G/A · Nov 14, 2024

9.7%

4.9M shares

Perceptive Capital Solutions Corp

SC 13G · Nov 14, 2024

8.3%

743K shares

Dyne Therapeutics, Inc.

SC 13G · Nov 14, 2024

6.8%

6.8M shares

Immatics N.V.

SC 13G · Nov 14, 2024

9.7%

10.0M shares

Madrigal Pharmaceuticals, Inc.

SC 13G · Nov 14, 2024

9.2%

2.0M shares

Merus N.V.

SC 13G · Nov 14, 2024

6.1%

4.2M shares

Geron Corporation

SC 13G · Nov 14, 2024

7.3%

44.1M shares

Neurogene Inc.

SC 13G · Nov 14, 2024

8.7%

1.1M shares

Vericel Corporation

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Pharming Group N.V.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Fulcrum Therapeutics, Inc.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Celldex Therapeutics, Inc.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Avadel Pharmaceuticals PLC

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Adicet Bio, Inc.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

ALLURION TECHNOLOGIES, INC.

SC 13D/A · Oct 24, 2024

5.7%

3.7M shares

Avidity Biosciences, Inc.

SC 13D/A · Aug 23, 2024

60.0%

12.1M shares

ALLURION TECHNOLOGIES, INC. (formerly known as Allurion Technologies Holdings, Inc.)

SC 13D/A · Jul 2, 2024

7.0%

4.4M shares

ALLURION TECHNOLOGIES, INC.

SC 13D/A · Apr 17, 2024

8.1%

3.9M shares

Avidity Biosciences, Inc.

SC 13D/A · Mar 1, 2024

60.0%

9.7M shares

Immunocore Holdings plc

SC 13G/A · Feb 14, 2024

12.3%

6.1M shares

Immunic, Inc.

SC 13G/A · Feb 14, 2024

9.6%

4.3M shares

Fulcrum Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

8.8%

5.5M shares

PMV Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Relmada Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Protagonist Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

9.2%

5.3M shares

Ultragenyx Pharmaceutical Inc.

SC 13G/A · Feb 14, 2024

8.4%

6.9M shares

Stoke Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

9.3%

4.1M shares

Vericel Corporation

SC 13G/A · Feb 14, 2024

6.7%

3.2M shares

Establishment Labs Holdings Inc.

SC 13G/A · Feb 14, 2024

9.7%

2.5M shares

Celldex Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

6.3%

3.5M shares

C4 Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

BrainsWay Ltd.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Apyx Medical Corporation

SC 13G/A · Feb 14, 2024

3.0%

1.0M shares

Adicet Bio, Inc.

SC 13G/A · Feb 14, 2024

9.6%

4.1M shares

Tenaya Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Tarsus Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

9.5%

3.2M shares