Activist investor & 5%+ owner · SC 13D/13G filings
Total Filings
162
Stocks Covered
66
Latest Filing
Feb 17, 2026
AnaptysBio, Inc.
SC 13D/A · Aug 16, 2024
25.8%
7.8M shares
Tectonic Therapeutic, Inc.
SC 13G · Jul 1, 2024
5.8%
849K shares
Hookipa Pharma Inc.
SC 13G · May 31, 2024
5.9%
5.7M shares
Morphic Holding, Inc.
SC 13G · May 3, 2024
6.0%
3.0M shares
Lenz Therapeutics, Inc. (f/k/a Graphite Bio, Inc.)
SC 13G/A · Apr 8, 2024
4.8%
1.2M shares
Adaptimmune Therapeutics plc
SC 13G/A · Mar 26, 2024
10.7%
164.4M shares
Crinetics Pharmaceuticals, Inc.
SC 13G · Mar 11, 2024
5.3%
4.2M shares
Zymeworks Inc.
SC 13D · Feb 23, 2024
20.0%
14.1M shares
ITeos Therapeutics, Inc.
SC 13G · Feb 16, 2024
5.4%
1.9M shares
SC 13G/A · Feb 15, 2024
0.4%
211K shares
Atea Pharmaceuticals, Inc.
8.4%
7.0M shares
SC 13G/A · Feb 14, 2024
Xencor, Inc.
8.7%
5.3M shares
Tempest Therapeutics Inc.
0.0%
0 shares
Third Harmonic Bio, Inc.
7.9%
3.2M shares
Springworks Therapeutics, Inc.
Revolution Medicines, Inc.
0.1%
133K shares
ORIC Pharmaceuticals, Inc.
8.9%
6.3M shares
NGM Biopharmaceuticals, Inc.
2.9%
2.4M shares
Neurogene Inc.
SC 13G · Feb 14, 2024
10.0%
1.3M shares
Kura Oncology, Inc.
7.6M shares
Janux Therapeutics, Inc.
4.6M shares
Galapagos NV
9.9%
6.5M shares
Centessa Pharmaceuticals PLC
5.6M shares
Arvinas, Inc.
6.8M shares
Apellis Pharmaceuticals, Inc.
9.4%
11.2M shares
Aligos Therapeutics, Inc.
7.3M shares
Spyre Therapeutics, Inc.
2.5%
887K shares
Adicet Bio, Inc.
Abeona Therapeutics Inc.
4.2%
1.1M shares
Allovir, Inc.
SC 13G · Feb 1, 2024
9.3%
10.7M shares
SC 13G · Jan 30, 2024
7.7%
113.4M shares
Mirati Therapeutics, Inc.
SC 13G/A · Dec 27, 2023
10.5%
7.4M shares
Atara Biotherapeutics, Inc.
SC 13G · Nov 21, 2023
10.1M shares
Tango Therapeutics, Inc.
SC 13G/A · Oct 16, 2023
13.1%
13.3M shares
Immunome, Inc.
SC 13G · Oct 12, 2023
9.1%
3.9M shares
SC 13G · Oct 2, 2023
8.5%
SC 13G · Sep 21, 2023
SC 13G · Sep 13, 2023
7.4%
Mersana Therapeutics, Inc.
SC 13G · Jul 27, 2023
16.9%
19.4M shares
SC 13G · Jul 18, 2023
Aeglea Biotherapeutics, Inc.
SC 13G · Jun 30, 2023
6.4%
5.0M shares
SC 13G/A · Jun 21, 2023
19.9%
13.4M shares
SC 13G/A · Jun 16, 2023
6.8%
7.2M shares
SC 13G · Jun 7, 2023
TScan Therapeutics, Inc.
SC 13G · Jun 5, 2023
11.7%
