Investor Avidity Partners Management LP
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Avidity Partners Management LP . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

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Date Form Target Prev
Shares		 Current
Shares		 Change
(Percent)		 Ownership
(Percent)		 Change
(Percent)
2025-08-14 13G/A IMUX / Immunic, Inc. 6,041,059 5,615,811
2025-08-14 13G/A CNTX / Context Therapeutics Inc. 7,776,296 9,126,176
2025-05-15 13G/A IMUX / Immunic, Inc. 9,022,363 6,041,059
2025-03-19 13D/A DNTH / Dianthus Therapeutics, Inc. 2,930,250 3,378,939
2025-02-14 13G/A KZR / Kezar Life Sciences, Inc. 5,025,454
2025-02-14 13G/A CATX / Perspective Therapeutics, Inc. 3,590,426 2,841,024
2025-02-14 13G/A SCYX / SCYNEXIS, Inc. 4,177,203 4,211,870
2025-02-14 13G/A IMUX / Immunic, Inc. 8,989,443 9,022,363
2025-02-14 13G/A SYRS / Syros Pharmaceuticals, Inc. 2,857,573 2,048,020
2025-02-14 13G/A CNTX / Context Therapeutics Inc. 7,776,296 7,776,296
2024-12-03 13D/A DNTH / Dianthus Therapeutics, Inc. 2,922,823 2,930,250
2024-11-14 13G/A ORKA / Oruka Therapeutics, Inc. 790,926
2024-11-14 13G/A SCYX / SCYNEXIS, Inc. 4,105,210 4,177,203
2024-11-14 13G CATX / Perspective Therapeutics, Inc. 3,590,426
2024-11-14 13G/A CRBU / Caribou Biosciences, Inc. 6,360,212 0
2024-11-14 13G/A JSPR / Jasper Therapeutics, Inc. 760,000 0
2024-11-14 13G/A IMUX / Immunic, Inc. 8,899,418 8,989,443
2024-11-14 13G/A CNTX / Context Therapeutics Inc. 7,776,296 7,776,296
2024-11-14 13G/A SYRS / Syros Pharmaceuticals, Inc. 2,662,206 2,857,573
2024-11-14 13G/A KPTI / Karyopharm Therapeutics Inc. 11,188,743 4,741,060
2024-05-13 13G CNTX / Context Therapeutics Inc. 7,776,296
2024-04-09 13G ABIO / ARCA biopharma, Inc. 1,000,000
2024-03-27 13G JSPR / Jasper Therapeutics, Inc. 760,000
2024-02-14 13G/A ALT / Altimmune, Inc. 3,990,000 0
2024-02-14 13G/A KZR / Kezar Life Sciences, Inc. 6,782,400 5,025,454
2024-02-14 13G/A IDYA / IDEAYA Biosciences, Inc. 3,824,800 1,520,000
2024-02-14 13G/A KPTI / Karyopharm Therapeutics Inc. 11,381,073 11,188,743
2024-02-13 13G/A CYTT / Cyteir Therapeutics, Inc. 1,795,800 0
2024-02-13 13G/A PRTA / Prothena Corporation plc 2,953,000 0
2024-02-13 13G/A SCYX / SCYNEXIS, Inc. 3,624,523 4,105,210
2024-02-13 13G/A AKRO / Akero Therapeutics, Inc. 3,825,000 235,000
2024-02-13 13G/A ZNTL / Zentalis Pharmaceuticals, Inc. 5,150,000 0
2024-02-13 13G/A SYRS / Syros Pharmaceuticals, Inc. 2,189,719 2,662,206
2024-02-13 13G/A ARVN / Arvinas, Inc. 4,950,000 2,985,117
2024-02-13 13G/A ARVN / Arvinas, Inc. 4,950,000 2,985,117
2024-02-13 13G/A NSTGQ / NS Wind Down Co., Inc. 2,950,000 0
2024-02-13 13G/A SNDX / Syndax Pharmaceuticals, Inc. 6,718,142 3,950,000
2024-02-13 13G/A FUSN / Fusion Pharmaceuticals Inc. 6,824,450 6,500,328
2024-02-13 13G/A PRAX / Praxis Precision Medicines, Inc. 4,100,000 0
2024-01-31 13D DNTH / Dianthus Therapeutics, Inc. 2,922,823
2024-01-16 13G IMUX / Immunic, Inc. 8,899,418
2024-01-08 13G CRBU / Caribou Biosciences, Inc. 6,360,212
2023-10-23 13G FUSN / Fusion Pharmaceuticals Inc. 6,824,450
2023-05-25 13G NSTGQ / NS Wind Down Co., Inc. 2,950,000
2023-02-14 13G/A PRTA / Prothena Corporation plc 2,953,000
2023-02-14 13G/A SYRS / Syros Pharmaceuticals, Inc. 2,120,000 2,189,719
2023-02-14 13G/A SCYX / SCYNEXIS, Inc. 2,239,278 3,624,523
2023-02-14 13G/A EPIX / ESSA Pharma Inc. 3,750,000 1,855,400
2023-02-14 13G/A ALT / Altimmune, Inc. 2,765,000 3,990,000
2023-02-14 13G/A SNDX / Syndax Pharmaceuticals, Inc. 5,244,019 6,718,142
2023-02-14 13G/A KZR / Kezar Life Sciences, Inc. 3,228,200 6,782,400
2023-02-14 13G/A IDYA / IDEAYA Biosciences, Inc. 2,553,000 3,824,800
2023-02-14 13G/A ALPN / Alpine Immune Sciences, Inc. 2,205,687 1,888,887
2023-02-14 13G/A KPTI / Karyopharm Therapeutics Inc. 11,351,819 11,381,073
2023-02-14 13G/A GRTS / Gritstone bio, Inc. 6,990,194 2,859,971
2023-02-14 13G/A AKRO / Akero Therapeutics, Inc. 3,105,000 3,825,000
2023-02-14 13G/A CYTT / Cyteir Therapeutics, Inc. 1,849,538 1,795,800
2023-02-14 13G/A PHASQ / PhaseBio Pharmaceuticals, Inc. 4,405,000 2,040,000
2023-02-14 13G/A PHAT / Phathom Pharmaceuticals, Inc. 1,896,000 1,900,000
2023-02-14 13G/A ARVN / Arvinas, Inc. 3,239,838 4,950,000
2023-02-14 13G/A ISEE / IVERIC bio Inc 6,955,000 838,407
2023-02-14 13G/A US68234L4059 / ONCOSEC MEDICAL INC 0
2023-02-14 13G/A ACET / Adicet Bio, Inc. 3,034,004 0
2023-02-14 13G/A VRDN / Viridian Therapeutics, Inc. 1,278,261 0
2023-02-14 13G/A ZNTL / Zentalis Pharmaceuticals, Inc. 3,022,790 5,150,000
2023-02-02 13G PRAX / Praxis Precision Medicines, Inc. 4,100,000
2022-12-08 13G KPTI / Karyopharm Therapeutics Inc. 11,351,819
2022-10-27 13G EPIX / ESSA Pharma Inc. 3,750,000
2022-09-20 13G SYRS / Syros Pharmaceuticals, Inc. 2,120,000
2022-09-16 13G AKRO / Akero Therapeutics, Inc. 3,105,000
2022-06-16 13G ARVN / Arvinas, Inc. 3,239,838
2022-02-14 13G/A IDYA / IDEAYA Biosciences, Inc. 2,470,179 2,553,000
2022-02-14 13G/A SCYX / SCYNEXIS, Inc. 1,979,800 2,239,278
2022-02-14 13G/A SNDX / Syndax Pharmaceuticals, Inc. 4,750,000 5,244,019
2022-02-14 13G SPNE / SeaSpine Holdings Corp 2,010,000 2,010,000
2022-02-14 13G/A CRDF / Cardiff Oncology, Inc. 2,153,600 0
2022-02-14 13G/A GRTS / Gritstone bio, Inc. 4,546,814 6,990,194
2022-02-14 13G/A ALPN / Alpine Immune Sciences, Inc. 1,470,390 2,205,687
2022-02-14 13G/A ONCS / OncoSec Medical Inc 1,952,000 2,945,000
2022-02-14 13G/A ANIK / Anika Therapeutics, Inc. 731,000 0
2022-02-14 13G CYT / Cyteir Therapeutics, Inc. 1,849,538 1,849,538
2022-02-14 13G PHAT / Phathom Pharmaceuticals, Inc. 1,896,000 1,896,000
2022-02-14 13G/A ACET / Adicet Bio, Inc. 1,860,000 3,034,004
2022-02-14 13G/A ISEE / IVERIC bio Inc 7,225,000 6,955,000
2022-02-14 13G/A PHAS / PhaseBio Pharmaceuticals Inc 4,285,000 4,405,000
2022-02-14 13G/A VRDN / Viridian Therapeutics, Inc. 1,120,925 1,278,261
2022-02-01 13G ZNTL / Zentalis Pharmaceuticals, Inc. 3,022,790
2022-01-03 13G KZR / Kezar Life Sciences, Inc. 3,228,200
2022-01-03 13G ALT / Altimmune, Inc. 2,765,000
2021-12-01 13G IDYA / IDEAYA Biosciences, Inc. 2,470,179
2021-10-28 13G VRDN / Viridian Therapeutics, Inc. 1,120,925 1,120,925
2021-10-25 13G ISEE / IVERIC bio Inc 7,225,000
2021-04-20 13G/A SNDX / Syndax Pharmaceuticals, Inc. 3,308,000 4,750,000
2021-03-22 13G PHAS / PhaseBio Pharmaceuticals Inc 4,285,000
2021-02-16 13G/A ONCS / OncoSec Medical Inc 1,690,000 1,952,000
2021-02-16 13G/A ALPN / Alpine Immune Sciences, Inc. 1,337,413 1,470,390
2021-02-16 13G ANIK / Anika Therapeutics, Inc. 731,000
2021-02-16 13G/A SCYX / SCYNEXIS, Inc. 1,097,254 1,979,800
2021-02-16 13G/A SNDX / Syndax Pharmaceuticals, Inc. 2,600,000 3,308,000
2021-02-16 13G KDMN / Kadmon Holdings Inc 9,570,000
2021-02-12 13G ACET / Adicet Bio, Inc. 1,860,000
2021-02-02 13G CRDF / Cardiff Oncology, Inc. 2,153,600 2,153,600
2021-02-02 13G CRDF / Cardiff Oncology, Inc. 2,153,600 2,153,600
2020-12-30 13G ONCS / OncoSec Medical Inc 1,690,000
2020-12-28 13G GRTS / Gritstone bio, Inc. 4,546,814
2020-12-23 13G SCYX / SCYNEXIS, Inc. 1,097,254
2020-12-23 13G ALPN / Alpine Immune Sciences, Inc. 1,337,413
2020-11-04 13G SNDX / Syndax Pharmaceuticals, Inc. 2,600,000
2020-03-12 13G 867328601 / Sunesis Pharmaceuticals, Inc. 4,951,925 4,951,925
2020-03-11 13G 867328601 / Sunesis Pharmaceuticals, Inc. 4,951,925