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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

N/A

Pardes Biosciences, Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

GERON CORPORATION

SC 13G/A · Feb 14, 2023

10.0%

48.4M shares

MAGENTA THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

Relmada Therapeutics, Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

IMARA, INC.

SC 13G/A · Feb 14, 2023

12.4%

3.3M shares

ADICET BIO, INC.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

IO Biotech, Inc.

SC 13G/A · Feb 14, 2023

3.9%

1.1M shares

Entera Bio Ltd.

SC 13G/A · Feb 14, 2023

1.0%

296K shares

Day One Biopharmaceuticals, Inc.

SC 13G/A · Feb 14, 2023

9.6%

7.0M shares

TRAVERE THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2023

6.2%

4.0M shares

501 ACQUISITION CORP.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

Verona Pharma plc

SC 13G/A · Feb 14, 2023

10.0%

7.7M shares

Synlogic, Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

VAXCYTE, INC.

SC 13G/A · Feb 14, 2023

10.0%

8.2M shares

VERA THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

EyePoint Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2023

10.0%

3.4M shares

Milestone Pharmaceuticals Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

INHIBRX, INC.

SC 13G/A · Feb 14, 2023

8.9%

3.9M shares

NANOSTRING TECHNOLOGIES, INC.

SC 13G/A · Feb 14, 2023

0.3%

144K shares

Pyxis Oncology, Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

BCLS ACQUISITION CORP.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

COGENT BIOSCIENCES, INC.

SC 13G/A · Feb 14, 2023

8.6%

6.0M shares

AN2 THERAPEUTICS, INC.

SC 13G/A · Feb 14, 2023

19.5%

3.8M shares

Orchestra Biomed Holdings, Inc.

SC 13G · Feb 14, 2023

5.4%

610K shares

ALPINE IMMUNE SCIENCES, INC.

SC 13G/A · Feb 14, 2023

9.6%

4.4M shares

Bellus Health Inc.

SC 13G/A · Feb 14, 2023

9.9%

12.5M shares

PhaseBio Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2023

0.0%

0 shares

HILLEVAX, INC.

SC 13G · Feb 14, 2023

5.3%

1.8M shares

Werewolf Therapeutics, Inc.

SC 13D/A · Jan 10, 2023

18.0%

6.2M shares

FULCRUM THERAPEUTICS, INC.

SC 13G/A · Jan 6, 2023

18.6%

9.7M shares

ACHILLES THERAPEUTICS PLC

SC 13D/A · Dec 30, 2022

3.9%

1.6M shares

AVIDITY BIOSCIENCES, INC.

SC 13G · Dec 30, 2022

8.2%

5.5M shares

ACHILLES THERAPEUTICS PLC

SC 13D/A · Dec 23, 2022

7.3%

3.0M shares

ACHILLES THERAPEUTICS PLC

SC 13D/A · Dec 15, 2022

10.0%

4.1M shares

VOR BIOPHARMA INC.

SC 13D/A · Dec 9, 2022

34.8%

22.8M shares

SOLID BIOSCIENCES INC.

SC 13D/A · Dec 5, 2022

17.6%

3.4M shares

NEWAMSTERDAM PHARMA COMPANY N.V.

SC 13G · Dec 2, 2022

5.3%

4.3M shares

ACRIVON THERAPEUTICS, INC.

SC 13D · Nov 28, 2022

23.1%

4.8M shares

VOR BIOPHARMA INC.

SC 13D/A · Nov 14, 2022

28.8%

11.1M shares

STANDARD BIOTOOLS INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

LianBio

SC 13G/A · Nov 14, 2022

0.0%

0 shares

ORCHARD THERAPEUTICS PLC

SC 13G/A · Nov 14, 2022

0.0%

0 shares

ASTRIA THERAPEUTICS INC. (f/k/a Catabasis Pharmaceuticals, Inc.)

SC 13G/A · Nov 14, 2022

0.0%

0 shares

VERU INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

OLEMA PHARMACEUTICALS, INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

OTONOMY, INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

LARIMAR THERAPEUTICS, INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

DYNE THERAPEUTICS, INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

XILIO THERAPEUTICS, INC.

SC 13G/A · Nov 14, 2022

0.0%

0 shares

IMARA, INC.

SC 13G · Oct 24, 2022

12.3%

3.2M shares