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RA Capital Management, L.P.

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

Total Filings

441

Stocks Covered

166

Latest Filing

Feb 17, 2026

Filings

GH Research PLC

SC 13G/A · Aug 14, 2025

12.4%

7.7M shares

DAY ONE BIOPHARMACEUTICALS, INC.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

CervoMed Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

BOUNDLESS BIO, INC.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Astria Therapeutics, Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Alector, Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Adagio Medical Holdings, Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Contineum Therapeutics, Inc.

SC 13G · Jul 25, 2025

9.9%

2.1M shares

Kura Oncology, Inc.

SC 13G/A · May 15, 2025

4.9%

4.0M shares

NEWAMSTERDAM PHARMA COMPANY N.V.

SC 13G/A · May 15, 2025

9.9%

11.1M shares

GH Research PLC

SC 13G/A · May 15, 2025

11.2%

6.9M shares

GERON CORPORATION

SC 13G/A · May 15, 2025

9.9%

64.0M shares

Unicycive Therapeutics, Inc.

SC 13G/A · May 15, 2025

9.9%

13.3M shares

DYNE THERAPEUTICS, INC.

SC 13G/A · May 15, 2025

8.5%

9.7M shares

Surrozen, Inc.

SC 13G/A · May 15, 2025

9.9%

867K shares

Dianthus Therapeutics, Inc.

SC 13G/A · May 15, 2025

8.9%

2.9M shares

CHIMERIX INC

SC 13G/A · May 15, 2025

0.0%

0 shares

UROGEN PHARMA LTD.

SC 13G/A · May 15, 2025

7.0%

3.2M shares

C4 Therapeutics, Inc.

SC 13G/A · May 15, 2025

0.0%

0 shares

VAXCYTE, INC.

SC 13G/A · May 15, 2025

9.9%

13.0M shares

Bright Minds Biosciences Inc.

SC 13G/A · May 15, 2025

2.9%

206K shares

Avalo Therapeutics, Inc.

SC 13G/A · May 15, 2025

9.9%

1.1M shares

Verona Pharma plc

SC 13G/A · May 15, 2025

7.1%

6.0M shares

Adagio Medical Holdings, Inc.

SC 13G/A · May 15, 2025

7.2%

1.2M shares

Sutro Biopharma, Inc.

SC 13G · Apr 4, 2025

5.3%

4.4M shares

Verona Pharma plc

SC 13G/A · Feb 14, 2025

8.9%

7.8M shares

Unicycive Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

9.9%

11.5M shares

Tenaya Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

NEWAMSTERDAM PHARMA COMPANY N.V.

SC 13G/A · Feb 14, 2025

9.9%

10.9M shares

Recursion Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2025

2.0%

7.7M shares

Protara Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

9.9%

3.4M shares

Macrogenics, Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

LONGBOARD PHARMACEUTICALS, INC.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

GlycoMimetics, Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

EyePoint Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2025

4.7%

3.2M shares

Evolent Health, Inc.

SC 13G/A · Feb 14, 2025

3.1%

3.6M shares

Ensysce Biosciences, Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Dianthus Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

9.4%

2.9M shares

DAY ONE BIOPHARMACEUTICALS, INC.

SC 13G/A · Feb 14, 2025

5.7%

5.8M shares

Adagio Medical Holdings, Inc.

SC 13G/A · Feb 14, 2025

9.9%

1.6M shares

4D MOLECULAR THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2025

9.9%

4.6M shares

CYTEK BIOSCIENCES, INC.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

N/A

Cybin Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

CervoMed Inc.

SC 13G/A · Feb 14, 2025

9.9%

916K shares

BIOAGE LABS, INC.

SC 13G/A · Feb 14, 2025

3.7%

1.3M shares

AN2 THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Alto Neuroscience, Inc.

SC 13G/A · Feb 14, 2025

0.0%

0 shares

Monopar Therapeutics Inc.

SC 13G/A · Feb 14, 2025

9.9%

620K shares

ZURA BIO LIMITED

SC 13G/A · Feb 14, 2025

4.9%

3.2M shares

Alector, Inc.

SC 13G · Dec 6, 2024

9.9%

9.7M shares