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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

Unicycive Therapeutics, Inc.

SC 13G/A · Feb 17, 2026

9.9%

2.4M shares

Surrozen, Inc.

SC 13G/A · Feb 17, 2026

9.2%

872K shares

RHYTHM PHARMACEUTICALS, INC.

SC 13G/A · Feb 17, 2026

9.9%

6.7M shares

PALISADE BIO, INC.

SC 13G/A · Feb 17, 2026

9.9%

15.7M shares

Monopar Therapeutics Inc.

SC 13G/A · Feb 17, 2026

9.9%

668K shares

LB PHARMACEUTICALS INC

SC 13G/A · Feb 17, 2026

8.7%

2.2M shares

FULCRUM THERAPEUTICS, INC.

SC 13G/A · Feb 17, 2026

9.9%

6.6M shares

Eledon Pharmaceuticals, Inc.

SC 13G/A · Feb 17, 2026

0.0%

0 shares

Dianthus Therapeutics, Inc.

SC 13G/A · Feb 17, 2026

6.0%

2.6M shares

Contineum Therapeutics, Inc.

SC 13G/A · Feb 17, 2026

7.2%

2.2M shares

Avalo Therapeutics, Inc.

SC 13G/A · Feb 17, 2026

9.9%

1.9M shares

Arcellx, Inc.

SC 13G/A · Feb 17, 2026

2.2%

1.3M shares

Adicet Bio, Inc.

SC 13G/A · Feb 17, 2026

9.9%

960K shares

4D MOLECULAR THERAPEUTICS, INC.

SC 13G/A · Feb 17, 2026

9.9%

5.7M shares

ALX Oncology Holdings Inc.

SC 13G · Feb 9, 2026

9.9%

13.1M shares

N/A

Helix Acquisition Corp. III

SC 13G · Feb 2, 2026

7.0%

1.3M shares

Century Therapeutics, Inc.

SC 13G · Jan 16, 2026

9.9%

17.9M shares

DISC MEDICINE, INC.

SC 13G · Jan 7, 2026

5.9%

2.2M shares

OVID THERAPEUTICS INC.

SC 13G · Dec 18, 2025

9.9%

13.3M shares

Rezolute, Inc.

SC 13G · Dec 18, 2025

9.9%

9.2M shares

FULCRUM THERAPEUTICS, INC.

SC 13G/A · Dec 10, 2025

11.2%

6.1M shares

Benitec Biopharma Inc.

SC 13G · Dec 3, 2025

5.5%

1.9M shares

Unicycive Therapeutics, Inc.

SC 13G/A · Nov 14, 2025

9.9%

2.0M shares

TOURMALINE BIO, INC.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

TAYSHA GENE THERAPIES, INC.

SC 13G/A · Nov 14, 2025

9.9%

27.7M shares

RxSight, Inc.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

Monopar Therapeutics Inc.

SC 13G/A · Nov 14, 2025

9.9%

743K shares

Edgewise Therapeutics, Inc.

SC 13G/A · Nov 14, 2025

9.9%

10.4M shares

DYNE THERAPEUTICS, INC.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

Dianthus Therapeutics, Inc.

SC 13G/A · Nov 14, 2025

9.5%

3.9M shares

Avidity Biosciences, Inc.

SC 13G/A · Nov 14, 2025

5.9%

8.6M shares

Avalo Therapeutics, Inc.

SC 13G/A · Nov 14, 2025

9.9%

1.4M shares

BioCryst Pharmaceuticals, Inc.

SC 13G · Nov 13, 2025

7.3%

15.3M shares

RANI THERAPEUTICS HOLDINGS, INC.

SC 13G · Oct 30, 2025

9.9%

9.9M shares

Lexeo Therapeutics, Inc.

SC 13G · Oct 27, 2025

6.9%

5.0M shares

C4 Therapeutics, Inc.

SC 13G · Oct 24, 2025

9.9%

9.4M shares

JADE BIOSCIENCES, INC.

SC 13G · Oct 16, 2025

7.0%

3.2M shares

PALISADE BIO, INC.

SC 13G · Oct 9, 2025

9.9%

9.9M shares

LB PHARMACEUTICALS INC

SC 13G · Sep 19, 2025

7.5%

1.7M shares

Invivyd, Inc.

SC 13G · Aug 29, 2025

9.9%

21.3M shares

Adagio Medical Holdings, Inc.

SC 13G/A · Aug 26, 2025

7.2%

1.2M shares

CervoMed Inc.

SC 13G/A · Aug 20, 2025

9.9%

1.0M shares

Assembly Biosciences, Inc.

SC 13G · Aug 18, 2025

9.5%

1.5M shares

Verona Pharma plc

SC 13G/A · Aug 14, 2025

0.7%

594K shares

UROGEN PHARMA LTD.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

TAYSHA GENE THERAPIES, INC.

SC 13G/A · Aug 14, 2025

9.9%

25.3M shares

Sutro Biopharma, Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

Sera Prognostics, Inc.

SC 13G/A · Aug 14, 2025

0.0%

0 shares

RHYTHM PHARMACEUTICALS, INC.

SC 13G/A · Aug 14, 2025

8.7%

5.6M shares

Protara Therapeutics, Inc.

SC 13G/A · Aug 14, 2025

4.9%

2.0M shares