Investors who own more than 5% of a class must file a Schedule 13D or 13G. The latest filing for each security since 12/18/2024, newest first.
| Issuer | % of Class | Filed | |||
|---|---|---|---|---|---|
|
JATT III Acquisition Corp
13G
G5080G109
|
5.8% |
9/2/2026
Event 8/26/2026
|
|||
| Deep Track Capital, LP | 5.8% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.4% | ||||
| David Kroin | 5.8% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.4% | ||||
|
Nurix Therapeutics, Inc.
13G/A
NRIX · 67080M103
|
7.5% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 7.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.5% | ||||
| David Kroin | 7.5% | ||||
|
X4 Pharmaceuticals, Inc.
13G/A
XFOR · 98420X202
|
8.3% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 8.3% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.2% | ||||
| David Kroin | 8.3% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.2% | ||||
|
Viridian Therapeutics, Inc.
13G/A
VRDN · 92790C104
|
3.3% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 3.3% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.3% | ||||
| David Kroin | 3.3% | ||||
|
Personalis, Inc.
13G/A
PSNL · 71535D106
|
3.8% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 3.8% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.8% | ||||
| David Kroin | 3.8% | ||||
|
MoonLake Immunotherapeutics
13G/A
MLTX · 61559X104
|
9.7% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 9.7% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 9.7% | ||||
| David Kroin | 9.7% | ||||
|
MBX Biosciences, Inc.
13G/A
MBX · 55287L101
|
3.6% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 3.6% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.6% | ||||
| David Kroin | 3.6% | ||||
|
Immunovant, Inc.
13G/A
IMVT · 45258J102
|
4.6% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 4.6% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.6% | ||||
| David Kroin | 4.6% | ||||
|
Enanta Pharmaceuticals, Inc.
13G/A
ENTA · 29251M106
|
4.97% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 4.97% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.97% | ||||
| David Kroin | 4.97% | ||||
|
enGene Therapeutics Inc.
13G/A
ENGN · 29286X101
|
0% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Avalo Therapeutics, Inc.
13G/A
AVTX · 05338F306
|
6.9% |
8/14/2026
Event 6/30/2026
|
|||
| Deep Track Capital, LP | 6.9% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.9% | ||||
| David Kroin | 6.9% | ||||
|
Latigo Biotherapeutics, Inc.
13G
LTGO · 517954103
|
7.0% |
8/13/2026
Event 8/7/2026
|
|||
| Deep Track Capital, LP | 7.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.0% | ||||
| David Kroin | 7.0% | ||||
|
Attovia Therapeutics, Inc.
13G
ATTO · 04987L102
|
7.5% |
8/12/2026
Event 8/5/2026
|
|||
| Deep Track Capital, LP | 7.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.5% | ||||
| David Kroin | 7.5% | ||||
|
Obsidian Therapeutics, Inc.
13G
OBX · 67448A106
|
5.4% |
8/11/2026
Event 8/4/2026
|
|||
| Deep Track Capital, LP | 5.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 5.1% | ||||
| David Kroin | 5.4% | ||||
| Deep Track Special Opportunities Fund, LP. | 0.3% | ||||
|
Shattuck Labs, Inc.
13G
STTK · 82024L103
|
5.2% |
6/17/2026
Event 6/10/2026
|
|||
| Deep Track Capital, LP | 5.2% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 5.2% | ||||
| David Kroin | 5.2% | ||||
|
Definium Therapeutics, Inc.
13G/A
DFTX · 24477V105
|
3.0% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 3.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.0% | ||||
| David Kroin | 3.0% | ||||
|
Tarsus Pharmaceuticals, Inc.
13G/A
TARS · 87650L103
|
8.5% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 8.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 8.5% | ||||
| David Kroin | 8.5% | ||||
|
Ocular Therapeutix, Inc
13G/A
OCUL · 67576A100
|
9.5% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 9.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 9.5% | ||||
| David Kroin | 9.5% | ||||
|
Inventiva S.A.
13G/A
IVA · 46124U107
|
3.8% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 3.8% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.8% | ||||
| David Kroin | 3.8% | ||||
|
Geron Corp
13G/A
GERN · 374163103
|
4.95% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 4.95% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.95% | ||||
| David Kroin | 4.95% | ||||
|
CorMedix Inc.
13G/A
CRMD · 21900C308
|
7.9% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 7.9% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.9% | ||||
| David Kroin | 7.9% | ||||
|
Bicara Therapeutics Inc.
13G/A
BCAX · 055477103
|
6.2% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 6.2% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.2% | ||||
| David Kroin | 6.2% | ||||
|
Apellis Pharmaceuticals, Inc.
13G/A
APLS · 03753U106
|
3.6% |
5/15/2026
Event 3/31/2026
|
|||
| Deep Track Capital, LP | 3.6% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.6% | ||||
| David Kroin | 3.6% | ||||
|
Hemab Therapeutics Holdings, Inc.
13G
COAG · 423494103
|
8.2% |
5/8/2026
Event 5/1/2026
|
|||
| Deep Track Capital, LP | 8.2% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.8% | ||||
| David Kroin | 8.2% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.4% | ||||
|
Altimmune, Inc.
13G
ALT · 02155H200
|
10.0% |
4/30/2026
Event 4/23/2026
|
|||
| Deep Track Capital, LP | 10.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 8.7% | ||||
| David Kroin | 10.0% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.3% | ||||
|
Alumis Inc.
13G
ALMS · 022307102
|
6.0% |
4/7/2026
Event 3/30/2026
|
|||
| Deep Track Capital, LP | 6.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.0% | ||||
| David Kroin | 6.0% | ||||
|
Aclaris Therapeutics, Inc.
13G
ACRS · 00461U105
|
7.0% |
3/17/2026
Event 3/9/2026
|
|||
| Deep Track Capital, LP | 7.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.0% | ||||
| David Kroin | 7.0% | ||||
|
Vera Therapeutics, Inc.
13G
VERA · 92337R101
|
5.5% |
3/11/2026
Event 3/4/2026
|
|||
| Deep Track Capital, LP | 5.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 5.5% | ||||
| David Kroin | 5.5% | ||||
|
Immunic, Inc.
13G
IMUX · 4525EP101
|
8.7% |
3/4/2026
Event 2/17/2026
|
|||
| Deep Track Capital, LP | 8.7% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.8% | ||||
| David Kroin | 8.7% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.9% | ||||
|
Terns Pharmaceuticals, Inc.
13G/A
TERN · 880881107
|
3.0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 3.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.0% | ||||
| David Kroin | 3.0% | ||||
|
RAPT Therapeutics, Inc.
13G/A
RAPT · 75382E208
|
0.4% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0.4% | ||||
| David Kroin | 0.4% | ||||
|
Palisade Bio, Inc.
13G/A
PALI · 696389402
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
| Deep Track Special Opportunities Fund, LP. | 0% | ||||
|
Oruka Therapeutics, Inc.
13G/A
ORKA · 687604108
|
4.5% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 4.5% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.9% | ||||
| David Kroin | 4.5% | ||||
| Deep Track Special Opportunities Fund, LP. | 0.5% | ||||
|
Olema Pharmaceuticals, Inc.
13G/A
OLMA · 68062P106
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Jade Biosciences, Inc.
13G/A
JBIO · 008064206
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Imagenebio, Inc.
13G/A
IMA · 45175G207
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Cybin Inc.
13G/A
HELP · 23256X407
|
4.7% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 4.7% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.7% | ||||
| David Kroin | 4.7% | ||||
|
Structure Therapeutics Inc.
13G/A
GPCR · 86366E106
|
6.0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 6.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.0% | ||||
| David Kroin | 6.0% | ||||
|
89bio, Inc.
13G/A
ETNB · 282559103
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Akero Therapeutics, Inc.
13G/A
AKRO · 00973Y108
|
0% |
2/13/2026
Event 12/31/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Dynavax Technologies Corporation
13G/A
DVAX · 268158201
|
0% |
2/11/2026
Event 2/10/2026
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
LB Pharmaceuticals Inc
13D/A
LBRX · 50180M108
|
11.7% |
2/10/2026
Event 2/6/2025
|
|||
| Deep Track Biotechnology Master Fund, Ltd. | 9.4% | ||||
| Deep Track Special Opportunities Fund, LP | 2.3% | ||||
| Deep Track Capital, LP | 11.7% | ||||
| David Kroin | 11.7% | ||||
|
ProMIS Neurosciences Inc.
13G
PMN · 74346M505
|
10.0% |
2/6/2026
Event 1/30/2026
|
|||
| Deep Track Capital, LP | 10.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 7.8% | ||||
| David Kroin | 10.0% | ||||
| Deep Track Special Opportunities Fund, LP. | 2.2% | ||||
|
Century Therapeutics, Inc.
13G
IPSC · 15673T100
|
7.3% |
1/15/2026
Event 1/8/2026
|
|||
| Deep Track Capital, LP | 7.3% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 5.8% | ||||
| David Kroin | 7.3% | ||||
| Deep Track Special Opportunities Fund, LP. | 1.6% | ||||
|
Verastem, Inc.
13G
VSTM · 92337C203
|
10.0% |
11/21/2025
Event 11/14/2025
|
|||
| Deep Track Capital, LP | 10.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 10.0% | ||||
| David Kroin | 10.0% | ||||
|
enGene Holdings Inc.
13G
ENGN · 29286M105
|
6.7% |
11/18/2025
Event 11/11/2025
|
|||
| Deep Track Capital, LP | 6.7% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.7% | ||||
| David Kroin | 6.7% | ||||
|
Zura Bio Ltd
13G/A
ZURA · G9TY5A101
|
0.4% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 0.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0.4% | ||||
| David Kroin | 0.4% | ||||
|
Tectonic Therapeutic, Inc.
13G/A
TECX · 878972108
|
0% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Protagonist Therapeutics, Inc
13G/A
PTGX · 74366E102
|
2.8% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 2.8% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 2.8% | ||||
| David Kroin | 2.8% | ||||
|
Pliant Therapeutics, Inc.
13G/A
PLRX · 729139105
|
0% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Mind Medicine (MindMed) Inc.
13G/A
MNMD · 60255C885
|
6.9% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 6.9% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 6.9% | ||||
| David Kroin | 6.9% | ||||
|
Invivyd, Inc.
13G/A
IVVD · 00534A102
|
0% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Inovio Pharmaceuticals, Inc.
13G/A
INO · 45773H409
|
2.4% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 2.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 2.4% | ||||
| David Kroin | 2.4% | ||||
|
Dianthus Therapeutics Inc.
13G/A
DNTH · 252828108
|
0% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Autolus Therapeutics plc
13G/A
AUTL · 05280R100
|
1.0% |
11/14/2025
Event 9/30/2025
|
|||
| Deep Track Capital, LP | 1.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 1.0% | ||||
| David Kroin | 1.0% | ||||
|
Abivax SA
13G/A
ABVX · 00370M103
|
4.8% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 4.8% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.8% | ||||
| David Kroin | 4.8% | ||||
|
Regulus Therapeutics Inc.
13G/A
RGLS · 75915K309
|
0% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Maze Therapeutics Inc.
13G/A
MAZE · 578784100
|
9.0% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 9.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 9.0% | ||||
| David Kroin | 9.0% | ||||
|
Korro Bio, Inc.
13G/A
KRRO · 500946108
|
3.0% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 3.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 3.0% | ||||
| David Kroin | 3.0% | ||||
|
Bicycle Therapeutics plc
13G/A
BCYC · 088786108
|
2.4% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 2.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 2.4% | ||||
| David Kroin | 2.4% | ||||
|
Allakos Inc.
13G/A
ALLK · 01671P100
|
0% |
8/14/2025
Event 6/30/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Ikena Oncology, Inc.
13G/A
IKNA · 45175G108
|
0% |
8/4/2025
Event 7/28/2025
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Guardant Health, Inc.
13G/A
GH · 40131M109
|
4.4% |
5/15/2025
Event 3/31/2025
|
|||
| Deep Track Capital, LP | 4.4% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.4% | ||||
| David Kroin | 4.4% | ||||
|
Context Therapeutics Inc.
13G/A
CNTX · 21077P108
|
8.3% |
5/15/2025
Event 3/31/2025
|
|||
| Deep Track Capital, LP | 8.3% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 8.3% | ||||
| David Kroin | 8.3% | ||||
|
Onkure Therapeutics, Inc.
13G/A
OKUR · 68277Q105
|
4.1% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 4.1% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.1% | ||||
| David Kroin | 4.1% | ||||
|
Pyxis Oncology, Inc.
13G/A
PYXS · 747324101
|
0% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Editas Medicine, Inc.
13G/A
EDIT · 28106W103
|
0% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
Springworks Therapeutics, Inc.
13G/A
SWTX · 85205L107
|
4.7% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 4.7% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 4.7% | ||||
| David Kroin | 4.7% | ||||
|
Nektar Therapeutics
13G/A
NKTR · 640268108
|
1.1% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 1.1% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 1.1% | ||||
| David Kroin | 1.1% | ||||
|
Syros Pharmaceuticals, Inc.
13G/A
SYRS · 87184Q107
|
0% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 0% | ||||
| David Kroin | 0% | ||||
|
4D Molecular Therapeutics Inc.
13G/A
FDMT · 35104E100
|
1.3% |
2/14/2025
Event 12/31/2024
|
|||
| Deep Track Capital, LP | 1.3% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 1.3% | ||||
| David Kroin | 1.3% | ||||
|
COMPASS Pathways plc
13G
CMPS · 20451W101
|
10.0% |
1/17/2025
Event 1/10/2025
|
|||
| Deep Track Capital, LP | 10.0% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 10.0% | ||||
| David Kroin | 10.0% | ||||
|
RAPT Therapeutics, Inc.
13G
RAPT · 75382E109
|
9.9% |
12/23/2024
Event 12/23/2024
|
|||
| Deep Track Capital, LP | 9.9% | ||||
| Deep Track Biotechnology Master Fund, Ltd. | 9.9% | ||||
| David Kroin | 9.9% | ||||