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Avidity Partners Management LP

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

Total Filings

91

Stocks Covered

35

Latest Filing

Nov 14, 2025

Filings

Context Therapeutics Inc.

SC 13G/A · Nov 14, 2025

9.9%

9.2M shares

Scynexis, Inc.

SC 13G/A · Nov 14, 2025

9.9%

4.3M shares

Immunic, Inc.

SC 13G/A · Nov 14, 2025

4.8%

4.7M shares

Kezar Life Sciences, Inc.

SC 13G/A · Nov 14, 2025

0.0%

0 shares

IMMUNIC, INC.

SC 13G/A · Aug 14, 2025

5.9%

5.6M shares

Context Therapeutics Inc.

SC 13G/A · Aug 14, 2025

9.9%

9.1M shares

Kezar Life Sciences, Inc.

SC 13G/A · Feb 14, 2025

6.9%

503K shares

Perspective Therapeutics, Inc.

SC 13G/A · Feb 14, 2025

4.2%

2.8M shares

SCYNEXIS INC

SC 13G/A · Feb 14, 2025

9.9%

4.1M shares

IMMUNIC, INC.

SC 13G/A · Feb 14, 2025

9.9%

9.0M shares

Syros Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2025

7.6%

2.0M shares

Context Therapeutics Inc.

SC 13G/A · Feb 14, 2025

9.9%

7.5M shares

Dianthus Therapeutics, Inc.

SC 13D/A · Dec 4, 2024

9.9%

293.0M shares

Oruka Therapeutics, Inc.

SC 13G/A · Nov 15, 2024

2.3%

791K shares

Scynexis, Inc.

SC 13G/A · Nov 15, 2024

9.9%

4.0M shares

Perspective Therapeutics, Inc.

SC 13G · Nov 14, 2024

5.3%

3.6M shares

Caribou Biosciences, Inc.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Jasper Therapeutics, Inc.

SC 13G/A · Nov 14, 2024

0.0%

0 shares

Immunic, Inc.

SC 13G/A · Nov 14, 2024

9.9%

9.0M shares

Context Therapeutics Inc.

SC 13G/A · Nov 14, 2024

9.9%

7.5M shares

Syros Pharmaceuticals, Inc.

SC 13G/A · Nov 14, 2024

9.9%

2.9M shares

Karyopharm Therapeutics Inc.

SC 13G/A · Nov 14, 2024

3.7%

4.7M shares

Context Therapeutics Inc.

SC 13G · May 13, 2024

9.9%

7.5M shares

ARCA biopharma, Inc.

SC 13G · Apr 10, 2024

6.9%

1.0M shares

Jasper Therapeutics, Inc.

SC 13G · Mar 27, 2024

5.1%

760K shares

Karyopharm Therapeutics Inc.

SC 13G/A · Feb 14, 2024

9.5%

11.2M shares

Kezar Life Sciences, Inc.

SC 13G/A · Feb 14, 2024

6.9%

5.0M shares

IDEAYA Biosciences, Inc.

SC 13G/A · Feb 14, 2024

2.4%

1.5M shares

Altimmune Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Syndax Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

4.7%

4.0M shares

Akero Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

0.4%

235K shares

Fusion Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

8.1%

6.5M shares

NanoString Technologies, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Scynexis, Inc.

SC 13G/A · Feb 14, 2024

9.9%

4.0M shares

Syros Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

9.9%

2.7M shares

Arvinas, Inc.

SC 13G/A · Feb 14, 2024

4.4%

3.0M shares

Prothena Corporation Public Limited Company

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Zentalis Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Arvinas, Inc.

SC 13G/A · Feb 14, 2024

4.4%

3.0M shares

Cyteir Therapeutics, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Praxis Precision Medicines, Inc.

SC 13G/A · Feb 14, 2024

0.0%

0 shares

Dianthus Therapeutics, Inc.

SC 13D · Jan 31, 2024

9.9%

292.3M shares

Immunic, Inc.

SC 13G · Jan 16, 2024

9.9%

8.9M shares

Caribou Biosciences, Inc.

SC 13G · Jan 8, 2024

7.2%

6.4M shares

Fusion Pharmaceuticals, Inc.

SC 13G · Oct 23, 2023

9.7%

6.8M shares

NanoString Technologies, Inc.

SC 13G · May 25, 2023

6.2%

3.0M shares

Prothena Corporation Public Limited Company

SC 13G/A · Feb 14, 2023

5.7%

3.0M shares

Syros Pharmaceuticals, Inc.

SC 13G/A · Feb 14, 2023

9.9%

2.1M shares

Scynexis, Inc.

SC 13G/A · Feb 14, 2023

9.9%

3.5M shares

ESSA Pharma Inc.

SC 13G/A · Feb 14, 2023

4.2%

1.9M shares